Every Day Science Typical Questions

8/13/2019 Every Day Science Typical Questions.

1/13

1/26/2014 Every day Science typical Questions..! ! - CSS Forums

www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.html

350kLike

HomeBeginner's

Guide

Rules SyllabusPast

Papers

CSP

Members

#1

Sunday,

January

26,

2014

07:49

PM

(GMT

+5)

CSS Forums> CSS Compulsory Subjects> Everyday Science

Every day Science typical Questions..!!

User Name User Name Remember Me?

Password Log in

Home Register Awards Community Today's Posts Search

Everyday ScienceA high scoring Compulsory Subject based on mostly objectives.Related queries and notes can beposted here.

Share Thread: Facebook Twitter Google+

LinkBack Thread Tools Search this Thread

Friday, January 14, 2011

Silent SpectatorSenior Member

Join Date: Jun 2007Location: Sanger(Battleground of Jihad).Posts: 951Thanks: 78Thanked 695 Times in 400 Posts

Every day Science typical Questions..!!

1.Question: A man with a loadjumps from a high building. What will be the load experienced by

him?

Answer: Zero, because while falling, both the man and the load are falling at the same acceleration i.e.

acceleration due to gravity.

2. Question: A piece of chalk when immersed in water emits bubbles. Why?

Answer: Chalk consists of pores forming capillaries. When it is immersed in water, the water begins to rise in

the capillaries and air present there is expelled in the form of bubbles.

3. Question: Why does a liquid remain hot or cold for a long time inside a thermos flask?

Answer: The presence of air, a poor conductor of heat, between the double glass wall of a thermos flask,keeps the liquid hot or cold inside a flask for a long time.

4. Question: Why does a ball bounce upon falling?

Sikkim Manipal Universitysmude.edu.in/SMU_Distance_Education

Ranked No.1 for Distance Learning. 100% Scholarships*. Enroll Now!
http://www.cssforum.com.pk/members/silent-spectator-8474.htmlhttp://www.cssforum.com.pk/central-superior-services-examination/css-competitive-examination/13521-prestigious-csps-css-forum.htmlhttp://www.cssforum.com.pk/http://www.cssforum.com.pk/http://www.cssforum.com.pk/http://www.googleadservices.com/pagead/aclk?sa=L&ai=Ct8VbhiDlUvzYEYWtmQWao4DwDMbcopkEvrfsm3Hq-qeJPBABIIqskAJQ4duX8QNg5cLkg6QOoAGylbf3A8gBAakCgOh-oGohUT6oAwHIA8MEqgTKAU_QJuBTYsin8gqSDnsx-CsNbY2Mw5q4aIREOJptmpnXTo1vZ8PLWcJ5hsD0njJDPnrB_aq8_Fh-E2EBnczvf2eCzjN85a_aAJY0hMJWlsYoCztCqYtyrVV1KIXjxqrhKd4p5gPqSOyvLyxrjB2XGKMDUzLj1CrIYkhFEqaXSSPpFBPw0TTRpb64iMIOQZqZLivSRRRp07gsGaJY_VDo2PTvQDykIfO75oaWKuJci13YP3GQwH1Ypefu7gVbi6jelFrAx9hUZpgR6s6IBgGAB7bqyAg&num=1&cid=5GiqofxTV4UPQg6igtbecfvQ&sig=AOD64_2TiqeYmP1MqGbiF-67Ril7gTWgtg&client=ca-pub-8827297375521878&adurl=http://online.smude.edu.in/sikkim-manipal-university/%3Futm_source%3DGoogle%26utm_campaign%3D2013%2520-%2520Content%2520-%2520Competitors%2520-%2520Anna%26utm_medium%3Dcpc%26utm_term%3D%26Network%3D%7BSearch%7D%26utm_content%3D30357004806%26SiteTarget%3Dwww.cssforum.com.pk%26utm_adposition%3Dnone%26utm_matchtype%3D%26utm_devicemodel%3Dhttp://www.googleadservices.com/pagead/aclk?sa=L&ai=Ct8VbhiDlUvzYEYWtmQWao4DwDMbcopkEvrfsm3Hq-qeJPBABIIqskAJQ4duX8QNg5cLkg6QOoAGylbf3A8gBAakCgOh-oGohUT6oAwHIA8MEqgTKAU_QJuBTYsin8gqSDnsx-CsNbY2Mw5q4aIREOJptmpnXTo1vZ8PLWcJ5hsD0njJDPnrB_aq8_Fh-E2EBnczvf2eCzjN85a_aAJY0hMJWlsYoCztCqYtyrVV1KIXjxqrhKd4p5gPqSOyvLyxrjB2XGKMDUzLj1CrIYkhFEqaXSSPpFBPw0TTRpb64iMIOQZqZLivSRRRp07gsGaJY_VDo2PTvQDykIfO75oaWKuJci13YP3GQwH1Ypefu7gVbi6jelFrAx9hUZpgR6s6IBgGAB7bqyAg&num=1&cid=5GiqofxTV4UPQg6igtbecfvQ&sig=AOD64_2TiqeYmP1MqGbiF-67Ril7gTWgtg&client=ca-pub-8827297375521878&adurl=http://online.smude.edu.in/sikkim-manipal-university/%3Futm_source%3DGoogle%26utm_campaign%3D2013%2520-%2520Content%2520-%2520Competitors%2520-%2520Anna%26utm_medium%3Dcpc%26utm_term%3D%26Network%3D%7BSearch%7D%26utm_content%3D30357004806%26SiteTarget%3Dwww.cssforum.com.pk%26utm_adposition%3Dnone%26utm_matchtype%3D%26utm_devicemodel%3Dhttp://www.googleadservices.com/pagead/aclk?sa=L&ai=Ct8VbhiDlUvzYEYWtmQWao4DwDMbcopkEvrfsm3Hq-qeJPBABIIqskAJQ4duX8QNg5cLkg6QOoAGylbf3A8gBAakCgOh-oGohUT6oAwHIA8MEqgTKAU_QJuBTYsin8gqSDnsx-CsNbY2Mw5q4aIREOJptmpnXTo1vZ8PLWcJ5hsD0njJDPnrB_aq8_Fh-E2EBnczvf2eCzjN85a_aAJY0hMJWlsYoCztCqYtyrVV1KIXjxqrhKd4p5gPqSOyvLyxrjB2XGKMDUzLj1CrIYkhFEqaXSSPpFBPw0TTRpb64iMIOQZqZLivSRRRp07gsGaJY_VDo2PTvQDykIfO75oaWKuJci13YP3GQwH1Ypefu7gVbi6jelFrAx9hUZpgR6s6IBgGAB7bqyAg&num=1&cid=5GiqofxTV4UPQg6igtbecfvQ&sig=AOD64_2TiqeYmP1MqGbiF-67Ril7gTWgtg&client=ca-pub-8827297375521878&adurl=http://online.smude.edu.in/sikkim-manipal-university/%3Futm_source%3DGoogle%26utm_campaign%3D2013%2520-%2520Content%2520-%2520Competitors%2520-%2520Anna%26utm_medium%3Dcpc%26utm_term%3D%26Network%3D%7BSearch%7D%26utm_content%3D30357004806%26SiteTarget%3Dwww.cssforum.com.pk%26utm_adposition%3Dnone%26utm_matchtype%3D%26utm_devicemodel%3Dhttp://www.cssforum.com.pk/members/silent-spectator-8474.htmlhttp://www.cssforum.com.pk/members/silent-spectator-8474.htmlhttp://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.html?nojs=1#goto_threadsearchhttp://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.html?nojs=1#goto_threadtoolshttp://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.html?nojs=1#linkshttps://plus.google.com/share?url=http%3A%2F%2Fwww.cssforum.com.pk%2Fcss-compulsory-subjects%2Feveryday-science%2F43496-every-day-science-typical-questions.htmlhttp://twitter.com/home?status=Every+day+Science+typical+Questions..%21%21+http%3A%2F%2Fwww.cssforum.com.pk%2Fshowthread.php%3Ft%3D43496http://www.facebook.com/sharer.php?u=http%3A%2F%2Fwww.cssforum.com.pk%2Fcss-compulsory-subjects%2Feveryday-science%2F43496-every-day-science-typical-questions.html&title=Every+day+Science+typical+Questions..%21%21http://www.cssforum.com.pk/newreply.php?do=newreply&noquote=1&p=255301http://www.cssforum.com.pk/search.phphttp://www.cssforum.com.pk/search.php?do=getdailyhttp://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.html?nojs=1#communityhttp://www.cssforum.com.pk/awards.phphttp://www.cssforum.com.pk/register.phphttp://www.cssforum.com.pk/http://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.htmlhttp://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/http://www.cssforum.com.pk/http://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.html#http://www.cssforum.com.pk/http://www.cssforum.com.pk/255301-post1.htmlhttp://www.cssforum.com.pk/central-superior-services-examination/css-competitive-examination/13521-prestigious-csps-css-forum.htmlhttp://www.cssforum.com.pk/css-syllabus.phphttp://www.cssforum.com.pk/css-rules.phphttp://www.cssforum.com.pk/beginners-guide.phphttp://www.cssforum.com.pk/http://www.cssforum.com.pk/central-superior-services-examination/css-competitive-examination/13521-prestigious-csps-css-forum.htmlhttp://www.cssforum.com.pk/css-syllabus.phphttp://www.cssforum.com.pk/css-rules.phphttp://www.cssforum.com.pk/beginners-guide.phphttp://www.cssforum.com.pk/


2/13


www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.html 2

Answer: When a ball falls, it is temporarily deformed. Because of elasticity, the ball tends to regain itsoriginal shape for which it presses the ground and bounces up (Newton's Third Law of Motion).

5 Question: Why is standing in boats or double decker buses not allowed, particularly in the upperdeck of buses?

Answer: On tilting the centre of gravity of the boat or bus is lowered and it is likely to overturn.

6. Question: Why is it recommended to add salt to water while boiling dal?

Answer: By addition of salt, the boiled point of water gets raised which helps in cooking the dal sooner.

7. Question: Why is it the boiling point of sea water more than that of pure water?

Answer: Sea water contains salt, and other impurities which cause an elevation in its boiling point.

8. Question: Why is it easier to spray water to which soap is added?

Answer: Addition of soap decreases the surface tension of water. The energy for spraying is directly

proportional to surface tension.

9. Question: Which is more elastic, rubber or steel?

Answer: Steel is more elastic for the same stress produced compared with rubber.

10. Question: Why is the sky blue?

Answer: Violet and blue light have short waves which are scattered more than red light waves. While red

light goes almost straight through the atmosphere, blue and violet light are scattered by particles in theatmosphere. Thus, we see a blue sky.

11. Question: Why Does ink leak out of partially filled pen when taken to a higheraltitude?

Answer: As we go up, the pressure and density of air goes on decreasing. A Partially filled pen leaks when

taken to a higher altitude because the pressure of air acting on the ink inside the tube of the pen is greaterthan the pressure of the air outside.

12. Question: On the moon, willthe weightof a man be less or more than his weight on the earth?

Answer: The gravity of the moon is one-sixth that of the earth; hence the weight of a person on thesurface of the moon will be one-sixth of his actual weight on earth.

13. Question: Why do some liquid burn while others do not?

Answer: A liquid burns if its molecules can combine with oxygen in the air with the production of heat.Hence, oil burns but water does not.

14. Question: Why can we see ourselves in a mirror?

Answer: We see objects when light rays from them reach our eyes. As mirrors have a shiny surface, thelight rays are reflected back to us and enter our eyes.

15. Question: Why does a solid chunk of ironsinkin water but float in mercury?


3/13



Answer: Because the density of iron is more than that of water bus less than that of mercury.

16. Question: Why is cooking quicker in a pressure cooker?

Answer: As the pressure inside the cooker increases, the boiling point of water is raised, hence, the cookingprocess is quicker.

17. Question: When wood burns it crackles. Explain?

Answer: Wood contains a complex mixture of gases and tar forming vapors trapped under its surface. Thesegases and tar vapors escape, making a cracking sound.

18. Question: Why do stars twinkle?

Answer: The light from a star reaches us after refraction as it passes through various layers of air. When

the light passes through the earth?s atmosphere, it is made to flicker by the hot and cold ripples of air andit appears as if the stars are twinkling.

19. Question: Why is it easier to roll a barrel than to pull it?

Answer: Because the rolling force of friction is less than the dynamic force of sliding friction.

20. Question: If a feather, a wooden ball and a steel ball fall simultaneously in a vacuum, which oneof these would fall faster?

Answer: All will fall at the same speed in vacuum because there will be no air resistance and the earth?sgravity will exert a similar gravitational pull on all.

21. Question: When a man fires a gun, he is pushed back slightly. Why?

Answer: As the bullet leaves the nozzle of the gun?s barrel with momentum in a forward direction, as perNewton's Third Law of Motion, the ejection imparts to the gun as equal momentum in a backward direction.

22. Question: Ice wrapped in a blanket or saw dust does not melt quickly. Why?

Answer: Both wood and wool are bad conductors of heat. They do not permit heat rays to reach the iceeasily.

23. Question: Why do we perspire on a hot day?

Answer: When the body temperature rises, the sweat glands are stimulated to secrete perspiration. It is

nature's way to keep the body cool. During the process of evaporation of sweat, body heat is taken away,thus giving a sense of coolness.

24. Question: Why does ice float on water butsinkin alcohol?

Answer: Because ice is lighter than water it floats on it. However, ice is heavier than alcohol and thereforeit sinks in alcohol.

25. Question: Why do we perspire before rains?

Answer: Before the rain falls, the atmosphere gets saturated with water vapors; as a result, the process ofevaporation of sweat is delayed.


4/13



26. Question: Why does athermometerkept in boiling water show no change in reading after1000C?

Answer: The boiling point of water is 1000C. Once water starts boiling at this temperature, thermometer

records no change in temperature. The quantity of heat supplied is being utilized as latent heat ofevaporation to convert the water at boiling point into vapour.

27. Question: Why do we bring our hands close to the mouth while shouting across to someone faraway?

Answer: By keeping hands close to mouth the sound is not allowed to spread (Phenomenon of diffraction ofsound) in all direction, but is directed to a particular direction and becomes louder.

28. Question: Why does a corked bottle filled with water burst if left out on a frosty night?

Answer: Because of low temperature the water inside the bottle freezes. On freezing it expands, thereby itsvolume increases and pressure is exerted on the walls.

29. Question: Why is a small gap left at the joint between two rails?

Answer: To permit expansion of rails due to heat generated by friction of a moving train.

30. Question: Why cannot a copper wire be used to make elements inelectric heater?

Answer: Copper melts at 108.30C and forms a black powder on reacting with atmospheric oxygen. Forheater elements a metal should have more resistance to produce heat.

Regards

__________________

I am he, whom I Love. And he whom I Love is I.

The Following 8 Users Say Thank You to Silent Spectator For This Useful Post:

ahmadmba215(Tuesday, January 18, 2011), Ali Ahmad Syed(Saturday, January 15, 2011),

mazar(Saturday, January 15, 2011), Nationlover786(Saturday, January 15, 2011), Omer(Friday, January

14, 2011), scorpion king(Sunday, January 16, 2011), unsolved_Mystery(Friday, January 14, 2011), Waqar

Bangash(Thursday, February 10, 2011)

Tips for Beautiful Skinkayaclinic.com

Get theright beauty tips for your skin from

the Experts. Apply Now!

Elder Care Professionals

airtel internet
http://www.cssforum.com.pk/members/waqar-bangash-568.htmlhttp://www.cssforum.com.pk/members/ahmadmba215-46532.htmlhttp://www.cssforum.com.pk/members/ali-ahmad-syed-40592.htmlhttp://www.googleadservices.com/pagead/aclk?sa=L&ai=CAJRvhiDlUszkIueLmwXm74CQCoHdsa4E-Y-e-Hnq-qeJPBADIIqskAIoA1D6kZMYYOXC5IOkDqABgdG18APIAQGpAoDofqBqIVE-qAMByAPDBKoEyAFP0KKBwcgrWyuMG1bq1aTxaY8lH8dkYmKwGEX3FstaSwGklT46GT5t16XOXCdWm0Vyc6EGL6AFnaYm9DTkR9NJG4d53Jd3NhcsLOnagbzdItZqVzAwWBxaWR5gexYSCWiH7YJGKt09HAibMpOeC_-kba2ZHl-R209PNKmlNAq-N7oVGa0eY67FFaTkeM8n1X07ja4hrE6JIyAWBtHugpi_YYvXPgkksqIQhLpAjn0BcaCBp2EPxUR4bbBjEmQ5z93G34zq9Op-jYgGAYAH567KDw&num=3&cid=5Gh5jKQAkkt6nV9ACjGTv-7r&sig=AOD64_3P2HRcmxtFNjgsb7srBN9Z54m8hg&client=ca-pub-8827297375521878&adurl=http://shop.airtel.com/pages/broadband-offer%3Futm_source%3DAirtel_BB_dr_Google_Display%26utm_medium%3DCPC%26utm_content%3DAirtel_BB_Lead_Jan_14_Text_Ad_1%26utm_campaign%3DAirtel_Broadbandhttp://www.googleadservices.com/pagead/aclk?sa=L&ai=CAJRvhiDlUszkIueLmwXm74CQCoHdsa4E-Y-e-Hnq-qeJPBADIIqskAIoA1D6kZMYYOXC5IOkDqABgdG18APIAQGpAoDofqBqIVE-qAMByAPDBKoEyAFP0KKBwcgrWyuMG1bq1aTxaY8lH8dkYmKwGEX3FstaSwGklT46GT5t16XOXCdWm0Vyc6EGL6AFnaYm9DTkR9NJG4d53Jd3NhcsLOnagbzdItZqVzAwWBxaWR5gexYSCWiH7YJGKt09HAibMpOeC_-kba2ZHl-R209PNKmlNAq-N7oVGa0eY67FFaTkeM8n1X07ja4hrE6JIyAWBtHugpi_YYvXPgkksqIQhLpAjn0BcaCBp2EPxUR4bbBjEmQ5z93G34zq9Op-jYgGAYAH567KDw&num=3&cid=5Gh5jKQAkkt6nV9ACjGTv-7r&sig=AOD64_3P2HRcmxtFNjgsb7srBN9Z54m8hg&client=ca-pub-8827297375521878&adurl=http://shop.airtel.com/pages/broadband-offer%3Futm_source%3DAirtel_BB_dr_Google_Display%26utm_medium%3DCPC%26utm_content%3DAirtel_BB_Lead_Jan_14_Text_Ad_1%26utm_campaign%3DAirtel_Broadbandhttp://www.googleadservices.com/pagead/aclk?sa=L&ai=C6-XihiDlUszkIueLmwXm74CQCq6c0YUEhoTXuIwBxtqVmT0QAiCKrJACKANQrfSM4_3_____AWDlwuSDpA6gAeqR098DyAEBqQKA6H6gaiFRPqgDAcgDwwSqBMsBT9CymtfIK1orjBtW6tWk8WmPJR_HZGJisBhF9xbLWksBpJU-Ohk-bdelzlwnVptFcnOhBi-gBZ2mJvQ05EfTSRuHedyXdzYXLCzp2oG83SLWalcwMFgcWlkeYHsWEgloh-2CRirdPRwImzKTngv_pG2tmR5fkdtPTzSppTQKvje6FRmtHmOuxRWk5HjPJ9V9O42uIaxOiSMgFgbR7oKYv2GL1z4JZLKlGIR9JwDqRa9jakybsC6yx25FYNaROgsoxc9s7CuvkUOsToqIBgGAB_7trCA&num=2&cid=5Gh5jKQAkkt6nV9ACjGTv-7r&sig=AOD64_2mw-LvmttJUHKiZ1ThNZocHfNjPw&client=ca-pub-8827297375521878&adurl=http://www.epocheldercare.com/companionship.aspx%3Fmpgid%3D8%26pgid%3D9http://www.googleadservices.com/pagead/aclk?sa=L&ai=C_fA-hiDlUszkIueLmwXm74CQCt789_wEltq8mi35qP_3MhABIIqskAIoA1Cxk6fp_f____8BYOXC5IOkDqABoqDA6gPIAQGpAoDofqBqIVE-qAMByAPDBKoEywFP0NLi284rWSuMG1bq1aTxaY8lH8dkYmKwGEX3FstaSwGklT46GT5t16XOXCdWm0Vyc6EGL6AFnaYm9DTkR9NJG4d53Jd3NhcsLOnagbzdItZqVzAwWBxaWR5gexYSCWiH7YJGKt09HAibMpOeC_-kba2ZHl-R209PNKmlNAq-N7oVGa0eY67FFaTkeM8n1X07ja4hrE6JIyAWBtHugpi_YYvXPglksqUYhH0nAKp3vkRqTJuwLrLHbkVg1pE6CyjFz2zsK6-RR9wLvIgGAYAHxt-_FQ&num=1&cid=5Gh5jKQAkkt6nV9ACjGTv-7r&sig=AOD64_2RjS9hgc3yDKdHCsB_uYzYNIDs8Q&client=ca-pub-8827297375521878&adurl=http://www.kayaclinic.com/kayasem/we_know_your_skin_SEM_2011.php%3Freferrer%3DGoogleC%26Creative%3DCPC%26utm_source%3DGoogleC%26utm_medium%3DCPC%26utm_content%3DTextAd%26utm_campaign%3DBrand_SEMhttp://www.googleadservices.com/pagead/aclk?sa=L&ai=C_fA-hiDlUszkIueLmwXm74CQCt789_wEltq8mi35qP_3MhABIIqskAIoA1Cxk6fp_f____8BYOXC5IOkDqABoqDA6gPIAQGpAoDofqBqIVE-qAMByAPDBKoEywFP0NLi284rWSuMG1bq1aTxaY8lH8dkYmKwGEX3FstaSwGklT46GT5t16XOXCdWm0Vyc6EGL6AFnaYm9DTkR9NJG4d53Jd3NhcsLOnagbzdItZqVzAwWBxaWR5gexYSCWiH7YJGKt09HAibMpOeC_-kba2ZHl-R209PNKmlNAq-N7oVGa0eY67FFaTkeM8n1X07ja4hrE6JIyAWBtHugpi_YYvXPglksqUYhH0nAKp3vkRqTJuwLrLHbkVg1pE6CyjFz2zsK6-RR9wLvIgGAYAHxt-_FQ&num=1&cid=5Gh5jKQAkkt6nV9ACjGTv-7r&sig=AOD64_2RjS9hgc3yDKdHCsB_uYzYNIDs8Q&client=ca-pub-8827297375521878&adurl=http://www.kayaclinic.com/kayasem/we_know_your_skin_SEM_2011.php%3Freferrer%3DGoogleC%26Creative%3DCPC%26utm_source%3DGoogleC%26utm_medium%3DCPC%26utm_content%3DTextAd%26utm_campaign%3DBrand_SEMhttp://www.googleadservices.com/pagead/aclk?sa=L&ai=C_fA-hiDlUszkIueLmwXm74CQCt789_wEltq8mi35qP_3MhABIIqskAIoA1Cxk6fp_f____8BYOXC5IOkDqABoqDA6gPIAQGpAoDofqBqIVE-qAMByAPDBKoEywFP0NLi284rWSuMG1bq1aTxaY8lH8dkYmKwGEX3FstaSwGklT46GT5t16XOXCdWm0Vyc6EGL6AFnaYm9DTkR9NJG4d53Jd3NhcsLOnagbzdItZqVzAwWBxaWR5gexYSCWiH7YJGKt09HAibMpOeC_-kba2ZHl-R209PNKmlNAq-N7oVGa0eY67FFaTkeM8n1X07ja4hrE6JIyAWBtHugpi_YYvXPglksqUYhH0nAKp3vkRqTJuwLrLHbkVg1pE6CyjFz2zsK6-RR9wLvIgGAYAHxt-_FQ&num=1&cid=5Gh5jKQAkkt6nV9ACjGTv-7r&sig=AOD64_2RjS9hgc3yDKdHCsB_uYzYNIDs8Q&client=ca-pub-8827297375521878&adurl=http://www.kayaclinic.com/kayasem/we_know_your_skin_SEM_2011.php%3Freferrer%3DGoogleC%26Creative%3DCPC%26utm_source%3DGoogleC%26utm_medium%3DCPC%26utm_content%3DTextAd%26utm_campaign%3DBrand_SEMhttp://www.cssforum.com.pk/members/waqar-bangash-568.htmlhttp://www.cssforum.com.pk/members/unsolved_mystery-19515.htmlhttp://www.cssforum.com.pk/members/scorpion-king-44706.htmlhttp://www.cssforum.com.pk/members/omer-1519.htmlhttp://www.cssforum.com.pk/members/nationlover786-43757.htmlhttp://www.cssforum.com.pk/members/mazar-47799.htmlhttp://www.cssforum.com.pk/members/ali-ahmad-syed-40592.htmlhttp://www.cssforum.com.pk/members/ahmadmba215-46532.htmlhttp://www.cssforum.com.pk/newreply.php?do=newreply&p=255301


5/13



#2Saturday, January 15, 2011



Second part..........!! !

31. Question: Why are water or mercury droplets always round when dropped on a clean glass?

Answer: The surface of a liquid is the seat of a special force as a result of which molecules on the surface

are bound together to form something like a stretched membrane. They tend to compress the molecules

below to the smallest possible volume, which causes the drop to take a round shape as for a given mass he

sphere has minimum volume.

32. Question: Why does a balloon filled with hydrogen rise in the air?

Answer: Weight of hydrogen is less than the weight of air displaced by it. In balloons hydrogen is normally

filled because it is lighter than air.

33. Question: Why do we lean forward while climbing a hill?

Answer: In order to keeps the vertical line passing through our centre of gravity always between our feet,

which is essential to attain equilibrium or stability.

34. Question: Why does smoke curl up in the air?

Answer: Smoke contains hot gases which being lighter in weight, follows a curved path because of the eddycurrents that are set up in the air.

35. Question: Why does an electric bulb explode when it is broken?

Answer: The bulb encompasses partial vacuum and as it breaks, air rushes in causing a small explosion.

36. Question: Why does a man fall forward when he jumps out of a running train or bus?

Answer: He is in motion while in the train or bus. When he jumps out, his feet comes to rest while touchingthe ground but his upper portion which is still in motion propels him forward.

37. Question: Why does an ordinary glass tumbler crack when very hot tea or milk is poured in it?

Answer: When a hot liquid is poured into a tumbler, the inner layer of the tumbler gets heated, it expandsbefore the outer layer and an unequal expansion of both layers causes the tumbler to crack.

38. Question: Why is a compass used as an indicator of direction?

Answer: The magnetic needles of a compass under the influence f the earth?s magnetic field lie in a north-south direction. Hence, we can identify direction.

39. Question: Why is water from a hand pump warm in winter and cold in summer?

Answer: In winter, the outside temperature is lower than that of water flowing out of the pump, and
http://www.cssforum.com.pk/members/silent-spectator-8474.htmlhttp://www.cssforum.com.pk/members/silent-spectator-8474.htmlhttp://www.cssforum.com.pk/255484-post2.html


6/13



ere ore, e wa er s warm. ereas n summer, e ou s e empera ure s g er an e wa er o epump, and therefore, it feels cold.

40. Question: Why is a rainbow seen after a shower?

Answer: After a shower, the clouds containing water droplets act like a prism through which the white lightis dispersed producing a spectrum.

41. Question: Why does a swimming pool appear less deep than is actually is?

Answer: The rays of light coming from the bottom of the pool pass from a denser medium (water) to a rarer

medium (air) and are refracted (bend away from the normal). When the rays return to the surface, theyform an image of the bottom of the pool at a point, which is little above the real position.

42. Question: Why is one?s breath visible in winter but not in summer?

Answer: In winter, water vapor contained in the breath condenses into small droplets, which become visiblebut in summer they are quickly evaporated and not seen.

43. Question: Why doesn?t the electric filament in an electric bulb burn up?

Answer: Firstly, because is made of tungsten which has a very high melting point (34100C) whereas the

temperature of the filament required to glow is only 2700oC. Secondly, oxygen is absent since the bulb isfilled with an inert gas which does not help in burning.

44. Question: Why does blotting paper absorb ink?

Answer: Blotting paper has fine pores, which act like capillaries. When a portion of blotting paper is broughtin contact with ink, ink enters the pores due to surface tension (capillary action f liquids) and is absorbed.

45. Question: Why does a small iron sink in water but a large ship float?

Answer: The weight of water displaced by an iron ball is less than its own weight, whereas water displacedby the immersed portion of a ship is equal to its weight (Archimedes? Principle).

46. Question: Why does ice float on water?

Answer: The weight of the ice block is equal to the weight of the liquid displaced by the immersed portionof the ice.

47. Question: Why does moisture gather outside a tumbler containing cold water?

Answer: The water vapour in the air condenses on cooling and appears as droplets of water.

48. Question: Why does kerosene float on water?

Answer: Because the density of kerosene is less than that of water. For the same reason cream rises in milkand floats at the top.

49. Question: Why is the water in an open pond cool even on a hot summer day?

Answer: As the water evaporates from the open surface of a pond, heat is taken away in the process,leaving the surface cool.


7/13



50. Question: Why is it less difficult to cook rice or potatoes at higher altitudes?

Answer: Atmospheric pressure at higher altitudes is low and boils water below 100C. The boiling point ofwater is directly proportional to the pressure on its surface.

51. Question: Why is it difficult to breathe at higher altitudes?

Answer: Because of low air pressure at higher altitudes the quantity of air is less, and so that of oxygen.

52. Question: Why are winter nights and summer nights warmer during cloudy weather than whenthe sky is clear?

Answer: Clouds being bad conductors of heat do not permit radiation of heat from land to escape into thesky. As this heat remains in the atmosphere, the cloudy nights are warmer.

53. Question: Why is a metal tyre heated before it is fixed on wooden wheels?

Answer: On heating, the metal tyre expands by which its circumference also increases. This makes fixingthe wheel easier and therefore cooling down shrinks it; thus fixing the tyre tightly.

54. Question: Why is it easier to swim in the sea than in a river?

Answer: The density of sea water is higher; hence the up thrust is more than that of river water.

55. Question: Who will possibly learn swimming faster-a fat person or a thin person?

Answer: The fat person displaces more water which will help him float much more freely compared to a thinperson.

56. Question: Why is a flash of lightening seen before thunder?

Answer: Because light travels faster than sound, it reaches the earth before the sound of thunder.

57. Question: Why cannot a petrol fire be extinguished by water?

Answer: Water, which is heavier than petrol, slips down permitting the petrol to rise to the surface and

continue to burn. Besides, the existing temperature is so high that the water poured on the fire evaporateseven before it can extinguish the fire. The latter is true if a small quantity of water is poured.

58. Question: Why does water remain cold in an earthen pot?

Answer: There are pores in an earthen pot which allow water to percolate to the outer surface. Hereevaporation of water takes place thereby producing a cooling effect.

59. Question: Why do we place a wet cloth on the forehead of a patient suffering from hightemperature?

Answer: Because of body?s temperature, water evaporating from the wet cloth produces a cooling effectand brings the temperature down.

60. Question: When a needle is placed on a small piece of blotting paper which is place on the

surface of clean water, the blotting paper sinks after a few minutes but the needle floats. However,in a soap solution the needle sinks. Why?


8/13



#3

Answer: The surface tension of clean water being higher than that of a soap solution, it cans support the

weight of a needle due to its surface tension. By addition of soap, the surface tension of water reduces,thereby resulting in the sinking of the needle.

Regards

__________________


The Following User Says Thank You to Silent Spectator For This Useful Post:

Waqar Bangash(Thursday, February 10, 2011)

Monday, January 17, 2011



Third part:

61. Question: To prevent multiplication of mosquitoes, it is recommended to sprinkle oil in the

ponds with stagnant water. Why?

Answer: Mosquitoes breed in stagnant water. The larvae of mosquitoes keep floating on the surface of

water due to surface tension. However, when oil is sprinkled, the surface tension is lowered resulting in

drowning and death of the larvae.

62. Question: Why does oil rise on a cloth tape of an oil lamp?

Answer: The pores in the cloth tape suck oil due to the capillary action of oil.

63. Question: Why are ventilators in a room always made near the roof?

Answer: The hot air being lighter in weight tends to rise above and escape from the ventilators at the top.

This allows the cool air to come in the room to take its place.

64. Question: How does ink get filled in a fountain pen?

Answer: When the rubber tube of a fountain pen immersed in ink is pressed, the air inside the tube comes

out and when the pressure is released the ink rushes in to fill the air space in the tube.

65. Question: Why are air coolers less effective during the rainy season?

Answer: During the rainy reason, the atmosphere air is saturated with moisture. Therefore, the process of

evaporation of water from the moist pads of the cooler slows down thereby not cooling the air blown out

from the cooler.

66. Question: Why does grass gather more dew in nights than metallic objects such as stones?

Answer: Grass being a good radiator enables water vapour in the air to condense on it. Moreover, grass

gives out water constantly (transpiration) which appears in the form of dew because the air near grass is

saturated with water vapour and slows evaporation. Dew is formed on objects which are good radiations

and bad conductors.
http://www.cssforum.com.pk/members/silent-spectator-8474.htmlhttp://www.cssforum.com.pk/members/silent-spectator-8474.htmlhttp://www.cssforum.com.pk/members/waqar-bangash-568.htmlhttp://www.cssforum.com.pk/newreply.php?do=newreply&p=255484http://www.cssforum.com.pk/255915-post3.html


9/13



67. Question: If a lighted paper is introduced in a jar of carbon dioxide, its flame extinguishes.Why?

Answer: Because carbon dioxide does not help in burning. For burning, oxygen is required.

68. Question: Why does the mass of an iron increase on rusting?

Answer: Because rust is hydrated ferric oxide which adds to the mass of the iron rod. The process ofrusting involves addition of hydrogen and oxygen elements to iron.

69. Question: Why does milk curdle?

Answer: Lactose (milk sugar) content of milk undergoes fermentation and changes into lactic acid which onreacting with milk protein (casein) form curd.

70. Question: Why does hard water not lather soap profusely?

Answer: Hard water contains sulphates and chlorides of magnesium and calcium which forms an insolublecompound with soap. Therefore, soap does not lather with hard water.

71. Question: Why is it dangerous to have charcoal fire burning in a closed room?

Answer: When charcoal burns it produces carbon monoxide which is suffocating and can cause death.

72. Question: Why is it dangerous to sleep under trees at night?

Answer: Plants respire at night and give out carbon dioxide which reduces the oxygen content of airrequired for breathing.

73. Question: Why is a new quilt warmer than an old one?

Answer: In a new quilt the cotton is not compressed and as such it encloses more air which is badconductor of heat. Therefore, it does not allow heat to pass.

74. Question: Curved rail tracks or curved roads are banked or raised on one side. Why?

Answer: Because a fast moving train or vehicle leans inwards while taking turn and the banked or raisedtrack provides required centripetal force to enable it to move round the curve.

75. Question: How do bats fly in dark?

Answer: When bats fly they produce ultrasonic sound waves which are reflected back to them from theobstacles in their way and hence they can fly without difficulty.

76. Question: Water pipes often burst at hill stations on cold frosty nights. Why?

Answer: The temperature may fall below 00C during cold frosty nights which converts the water inside the

pipes into ice, resulting in an increase in volume. This exerts great force on the pipes and as a result, theyburst.

77. Question: Why are white clothes more comfortable in summer than dark or black ones?


10/13



#4

nswer: e c o es are goo re ec ors an a a sor ers o ea , w ereas ar or ac c o es are

good absorbers of heat. Therefore, white clothes are more comfortable because they do not absorb heatfrom the sun rays.

78. Question: Why does a rose appear red grass green in daylight?

Answer: Rose absorbs all the constituent colors of white light except red which is reflected to us. Similarly,grass absorbs all colors except green which is reflected t us.

79. Question: Why does a ship rise as it enters the sea from a river?

Answer: The density of sea water is high due to impurities and salts compared to river water as a result;the upthurst produced by the sea water on the ship is more than that of river water.

80. Question: Why are fuse provided in electric installations?

Answer: A safety fuse is made of a wire of metal having a very low melting point. When excess current

flows in, the wire gets heated, melts and breaks the circuit. By breaking the circuit it saves electricequipment or installations from damage by excessive flow of current.

81. Question: Why is it easier to lift a heavy object under water than in air?

Answer: Because when a body is immersed in water, it experiences an upward thrust (Archimedes?

Principle) and loses weight equal to the weight of the water displaced by its immersed potion, and hence, iseasier to lift objects.

82. Question: If a highly pumped up bicycle tyre is left in the hot sunlight, it bursts. Why?

Answer: The air inside the tube increases in volume when heated up. As sufficient space for the expansionof the air is not available because the tube is already highly pumped, it may result in bursting of the tyre.

83. Question: What will be the color of green in blue light?

Answer: Grass will appear dark in color because it absorbs all other colors of the light except its own greencolor. The blue light falling on grass will be absorbed by it, and hence, it will appear dark in color.

84. Question: Why do two eyes give better vision than one?

Answer: Because two eyes do not form exactly similar images and he fusion of these two dissimilar imagesin the brain gives three dimensions of the stereoscopic vision.

Regards

__________________


The Following User Says Thank You to Silent Spectator For This Useful Post:


Saturday, January 22, 2011

GulrukhSenior Member

Join Date: Jun 2010Location: DystopiaPosts: 672Thanks: 655Thanked 421 Times in 289 Posts
http://www.cssforum.com.pk/members/gulrukh-37649.htmlhttp://www.cssforum.com.pk/members/gulrukh-37649.htmlhttp://www.cssforum.com.pk/members/waqar-bangash-568.htmlhttp://www.cssforum.com.pk/newreply.php?do=newreply&p=255915http://www.cssforum.com.pk/257186-post4.html


11/13



#5

Q.What makes planes leave vapour trails ?

Ans.The reason planes leave vapour trails is because they are burning hydrocarbons,chain of carbon atoms

linked together with hydrogen round it.when this mixes with oxygen you make water and some carbon

dioxide.

the vapour trail is the water and because the planes are very high up in the air actually what you are

getting is ice.vapour trails are water vapour that often form ice crystals.they leave those nice miniature

clouds behind in the wake of the plane.

Q.How do CFC's get to the poles ?

Ans.CFC's are actually every where in the atmosphere and not just over the poles.But over the poles where

the CFC's are coldest,you get ice particles.which allow the ozone depleting reactions to occur.So it's not

that the CFC's concentration are different,It's just what happens to them.because Antarctica is completely

isolated and surrounded by ocean you get a whirlpool effect in the atmosphere there which has a

concentrating effect.The depleted ozone therefore stays put rather than mixing in with the rest of the

atmosphere.

Q.Is the center of the earth entirely of molten material or is there some gas ?

Ans.There is no gas inside the center of the earth because the pressure is much too high.It only comes out

as gas when It finally gets to the surface.The magma that comes out of a volcano is only sourced severalkilometers beneath the surface.It means Its just beneath the skin effectively.

The Following User Says Thank You to Gulrukh For This Useful Post:


Saturday, January 22, 2011

GulrukhSenior Member

Join Date: Jun 2010Location: DystopiaPosts: 672Thanks: 655

Thanked 421 Times in 289 Posts

Q.Do atoms break when we break something ?

Ans.An atom is made up of nucleus in the center with all electrons on the outside.It's relatively easy to

break electrons off the outside of an an atom and sometimes when you break a material you can rip off

some of the electrons on one side and not the other.This is the reason why,If you crush things like

sugar,sometimes you build up more charge on one side than the other and you get sparks going back again

and so you'll get little flashes inside the sugar.but the actual nuclei of the atoms don't break at all when

you do any thing like that.You need to do some thing more violent to it,Involving a nuclear reactor orradiation some thing far bigger and more violent than that.

Q.Are falling bullets dangerous ?

Ans.Yes certainly they will be.bullet is given a degree of energy by the gun and that bullet will convert that

energy as it goes up into the air,Into gravitational potential energy and It will slow down in the process.but

then It's got enormous amount of potential energy.It will then fall back down to the earth and there will be

some losses because the bullet is interacting with the air which will have frictional effects,and slow it down

a little bit.But at the same time It will end up coming back to the ground,Because bullets are pretty

streamlined.At almost the same speed it left the gun.So it will come cannoning down into your head if youare underneath It,At the same speed it left the gun.You're effectively being shot from above.

Q.can we extract energy from cold ?
http://www.cssforum.com.pk/members/gulrukh-37649.htmlhttp://www.cssforum.com.pk/members/gulrukh-37649.htmlhttp://www.cssforum.com.pk/members/waqar-bangash-568.htmlhttp://www.cssforum.com.pk/newreply.php?do=newreply&p=257186http://www.cssforum.com.pk/257198-post5.html


12/13



Ans.You cant gain energy directly from cold.But what you can do is get a lot of energy by moving heat from

from somewhere which is warm to somewhere which is cold.And that's essentially what a steam engine does

or a car engine,Any of the heat engine work like that.However the colder you get that cold into the

system,the more efficient the process is.So If that cold end is absolute zero,Then if you move a Kilojoule of

energy from some thing warm to there,Then you have got a Kilojoule of useful work out of that.If its hotter

then that,then It gets lot less.So once you collect energy from cold directly,You can get a lot of energy by

transferring heat to some where very cold.

The Following User Says Thank You to Gulrukh For This Useful Post:Waqar Bangash(Thursday, February 10, 2011)

Previous Thread| Next Thread

Posting Rules

You may notpost new threadsYou may notpost repliesYou may notpost attachmentsYou may notedit your posts

BB codeis OnSmiliesare On[IMG]code is OnHTML code is OffTrackbacksare OnPingbacksare On

Refbacksare On

Forum Rules

Similar Threads

Thread Thread Starter Forum Replies Last Post

Principles of Political Science Xeric Political Science 8Friday, December

02, 2011 12:19 AM

A list of branches of Science and theirstudies

usman malik 65 Everyday Science Notes 0Tuesday, July 13,

2010 12:23 PM

Sentence reman_bari1455 English (Precis & Composition) 0Friday, May 02, 2008

06:53 PM

Philosophy of Science A Rehman Pal Philosophy 0Sunday, March 18,

2007 04:42 PM

CSS Forum - Privacy Statement - Terms of Serv ice - Top

Disclaimer:This is not the official website of Federal Public Service Commission Pakistan. This is a non-commercial website

Class 6th to 10th Onlinelearnnext.com/FreeTrial

Learn with animated videos &tests. Study from Home. Register Now!
http://www.facebook.com/CSSForumhttp://twitter.com/cssforumhttp://www.facebook.com/CSSForumhttp://twitter.com/cssforumhttp://www.googleadservices.com/pagead/aclk?sa=L&ai=CxAdFhiDlUpfTG4aumgXSqoHYCcSKx7sF3NOYlm3AjbcBEAEgiqyQAlDA-K3t_P____8BYOXC5IOkDqAB7un78wPIAQGpAoDofqBqIVE-qAMByAPDBKoExwFP0OKrL_dTGdi1F2X670TgYzCArcKzFMlTrrSA-co0ENNSXmIg9JzTlcfOfZW7ndveSp6BWlNNBkxKK-n2RydRqtfTQt7E_xBYsQdOA2fbW3RCI6WY-wBK8e8NWfMg3ZCjWKSvmccCGLORXqC5UlMTeG2zExrWzRq6tamKeWluPG06Oal1BCDZzg1QYGYhjoCDv1L4ZQ1dP8eBRsnYxk8426_a8szVBARXAz8DUUSW5UvZU8nTrVJhXQpsrlc4frMArZVe2pdViAYBgAf6lYQM&num=1&cid=5GiuK1WaVGuUBfmiA25mMz2f&sig=AOD64_3RJg6hkVaR7PgQEIz3b9OO2tygww&client=ca-pub-8827297375521878&adurl=http://www.LearnNext.com/FreeTrial.htm%3FtrackerId%3D543http://www.googleadservices.com/pagead/aclk?sa=L&ai=CxAdFhiDlUpfTG4aumgXSqoHYCcSKx7sF3NOYlm3AjbcBEAEgiqyQAlDA-K3t_P____8BYOXC5IOkDqAB7un78wPIAQGpAoDofqBqIVE-qAMByAPDBKoExwFP0OKrL_dTGdi1F2X670TgYzCArcKzFMlTrrSA-co0ENNSXmIg9JzTlcfOfZW7ndveSp6BWlNNBkxKK-n2RydRqtfTQt7E_xBYsQdOA2fbW3RCI6WY-wBK8e8NWfMg3ZCjWKSvmccCGLORXqC5UlMTeG2zExrWzRq6tamKeWluPG06Oal1BCDZzg1QYGYhjoCDv1L4ZQ1dP8eBRsnYxk8426_a8szVBARXAz8DUUSW5UvZU8nTrVJhXQpsrlc4frMArZVe2pdViAYBgAf6lYQM&num=1&cid=5GiuK1WaVGuUBfmiA25mMz2f&sig=AOD64_3RJg6hkVaR7PgQEIz3b9OO2tygww&client=ca-pub-8827297375521878&adurl=http://www.LearnNext.com/FreeTrial.htm%3FtrackerId%3D543http://www.googleadservices.com/pagead/aclk?sa=L&ai=CxAdFhiDlUpfTG4aumgXSqoHYCcSKx7sF3NOYlm3AjbcBEAEgiqyQAlDA-K3t_P____8BYOXC5IOkDqAB7un78wPIAQGpAoDofqBqIVE-qAMByAPDBKoExwFP0OKrL_dTGdi1F2X670TgYzCArcKzFMlTrrSA-co0ENNSXmIg9JzTlcfOfZW7ndveSp6BWlNNBkxKK-n2RydRqtfTQt7E_xBYsQdOA2fbW3RCI6WY-wBK8e8NWfMg3ZCjWKSvmccCGLORXqC5UlMTeG2zExrWzRq6tamKeWluPG06Oal1BCDZzg1QYGYhjoCDv1L4ZQ1dP8eBRsnYxk8426_a8szVBARXAz8DUUSW5UvZU8nTrVJhXQpsrlc4frMArZVe2pdViAYBgAf6lYQM&num=1&cid=5GiuK1WaVGuUBfmiA25mMz2f&sig=AOD64_3RJg6hkVaR7PgQEIz3b9OO2tygww&client=ca-pub-8827297375521878&adurl=http://www.LearnNext.com/FreeTrial.htm%3FtrackerId%3D543http://twitter.com/cssforumhttp://www.facebook.com/CSSForumhttp://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.html#tophttp://www.cssforum.com.pk/general/forum-policies-rules-regulations/4444-terms-service.htmlhttp://www.cssforum.com.pk/general/forum-policies-rules-regulations/4444-terms-service.htmlhttp://www.cssforum.com.pk/http://www.cssforum.com.pk/css-optional-subjects/group-g/philosophy/8498-philosophy-science.htmlhttp://www.cssforum.com.pk/css-compulsory-subjects/english-precis-composition/17788-sentence.htmlhttp://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/everyday-science-notes/36223-list-branches-science-their-studies.htmlhttp://www.cssforum.com.pk/css-optional-subjects/group-b/political-science/22228-principles-political-science.htmlhttp://www.cssforum.com.pk/misc.php?do=showruleshttp://www.cssforum.com.pk/misc.php?do=linkbacks#refbackshttp://www.cssforum.com.pk/misc.php?do=linkbacks#pingbackshttp://www.cssforum.com.pk/misc.php?do=linkbacks#trackbackshttp://www.cssforum.com.pk/misc.php?do=bbcode#imgcodehttp://www.cssforum.com.pk/misc.php?do=showsmilieshttp://www.cssforum.com.pk/misc.php?do=bbcodehttp://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions-next-thread.htmlhttp://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions-prev-thread.htmlhttp://www.cssforum.com.pk/newreply.php?do=newreply&noquote=1&p=257198http://www.cssforum.com.pk/members/waqar-bangash-568.htmlhttp://www.cssforum.com.pk/newreply.php?do=newreply&p=257198http://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.html#tophttp://www.cssforum.com.pk/css-compulsory-subjects/everyday-science/43496-every-day-science-typical-questions.html#top


13/13

1/26/2014 Every day Science typical Questions..! ! - CSS Forums .

purposes only. We do not claim that the site is an exhaustive compilation of information about Civil Service of Pakistanneither represent or endorse the accuracy or reliability of any information, content contained on, or linked, downloaded oraccessed from any page of this website. These materials are intended, but not promised or guaranteed to be current,complete or up to date. However, honest efforts have been made to provide comprehensive information for the benefit ofusers. The documents and material displayed or mentioned on this site are not official copies. Please contact FPSC forupdated rules and regulations governing CSS examination.

Sponsors: ArgusVision vBulletin, Copyright 2000 - 2014, Jelsoft Enterprises Ltd.
http://www.argusvision.net/

Documents

Every Day Science Typical Questions