gk diploma engg

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Ans. (a)

8. Which of the following vitamins is considered to be a hormone?(a) A(b) B(c) C(d) D

Ans. (b)

9. Who first established the fact that the earth revolves round the sun?(a) Kepler(b) Copernicus(c) Newton(d) GalileoAns. (b)

10. Which bf the following gases is used for refrigeration?(a) Chlorine(b) Sulphur dioxide

(c) Phosphine(d) AmmoniaAns. (d)

11. Which of the following have the ability to fix atmospheric nitrogen?1. Azolla2. E. Coli3. Cyanobacteria4. Azospirillum(a) l, 2 and 4(b) 2 and 3(c) l, 3 and 4(4) l, 2, 3 and 4

Ans. (c)

12. The resinous shellac is obtained from(a) agricultural waste(b) bark of a tree(c) processing of crude oil(d) distillation of woodAns. (b)

13. The deficiency of which one of the following gives rise to a disease characterized by oedema, subcutaneous hemorrhages, anaemia and pathological changes inthe teeth and gums?(a) Retinol(b) Vitamin B Complex(c) Ascorbic acid(d) GyanocobalaminAns. (c)

14. Which of the following is used as good biofertiliser in rice fields?(a) Cow dung(b) Azolla(c) A green legume(d) MossAns. (b)

15. If algae suddenly disappear from the water bodies, then all the other aquatic organisms (like fish, prawns and protozoans) will die. This is because of(a) lack of food





Ans. (b)

23. Turpentine oil is obtained from(a) eucalyptus tree(b) animal fat(c) mineral oil(d) pine tree

Ans. (d)

24. Sake is a favorite wine of Japanese. It is made from(a) vinegar(b) grape juice(c) rice grains(d) palm sapAns. (c)

25. KMnO4 can be used as(a) insecticide(b) fertilizer

(c) pesticide(d) disinfectantAns. (d)

26. Which of the following fuels causes minimum environmental pollution?(a) Kerosene(b) Hydrogen(c) Coal(d) DieselAns. (b)

27. Which of the following will you use to remove rust stains on cloth?(a) Lime

(b) Kerosene Oil(c) Alcohol(d) Oxalic acid solutionAns. (d)

28. Which of the following is correctly matched?1. LYMAN series Visible region2. BALMER series Ultraviolet region3. PASCHEN series Infrared region(a) 1 and 2(b) 2 and 3(c) 3 only(d) 1, 2 and 3 onlyAns. (c)

29. Which of the following is the name of the smallest part of the matter discovered recently by the scientists?(a) Proton(b) Neutron(c) Positron(d) QuarkAns. (d)

30. Which mirror is used as rear view mirror in vehicles?(a) Inverted

(b) Plane(c) Concave(d) Convex



Ans. (d)

31. Optical fiber works on the principle of(a) refraction(b) scattering(c) interference(d) total internal reflection

Ans. (d)

32. Which of the following acids is most important in building tissue proteins?(a) Lactic(b) Amino(c) Linoleic(d) Saturated fatty(e) Unsaturated fattyAns. (b)

33. In a car, radiator and fan are used to cool the engine. The heat transfer modes involved are

(a) conduction and convection(b) convection and radiation(c) conduction and radiation(d) conduction, convection and radiationAns. (b)

34. If the length of the filament in an electric bulb is reduced, the latter will glow with intensity that is(a) low(b) medium(c) more(d) normal as in originalAns. (c)

35. Which of the following radiations will be trapped up more in our atmosphereif CO2 percentage is increased?(a) Red Light(b) Green Light(c) Infra -red light(d) Ultra -violet lightAns. (c)

36. The difference between a nuclear reactor and an atomic bomb is that(a) no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction.(b) no chain reaction takes place in atomic bomb while it takes place in nuclearreactor.

(c) the chain reaction in nuclear reactor is con trolled.(d) the chain reaction in nuclear reactor is not controlled.Ans. (c)

37. Both sodium atoms and sodium ions have the same number of(a) electrons(b) electric charge(c) protons(d) electron shellsAns. (c)

38. Which of the following are true of fertilizer?1. It supplies nutrients to the plants.2. It kills the pests.



3. It produces plant growth hormones.4. It adjusts the soil pH and increases the crop yield.(a) 1 and 2(b) 2 and 3(c) 1 and 3(d) 1 and 4Ans. (d)

39. Which of the following solvents is used for dry cleaning of clothes?(a) Chloroform(b) Acetone(c) Alcohol(d) Carbon tetrachlorideAns. (c)

40. Which of the following is a mixed fertilizer?(a) Urea(b) Ammonium sulphate(c) CAM

(d) NPKAns. (d)

41. A bomb is dropped at a point from a movingaeroplane. The pilot observes that(a) bomb drops vertically downwards.(b) bomb remains stationary in the air.(c) the bomb traverses a curved path and falls some distance ahead.(d) the bomb traverses a curved path and falls some distance behind that point.Ans. (c)

42. Which of the following is the correct description of the term Human Bomb?(a) It is another term for population explosion.

(b) The human chain formed all across the country(c) The mass demonstration throughout the country(d) The newly devised chemical bomb which paralyses only human beings(e) None of theseAns. (e)

43. Which of the following is false?(a) All organisms are related through ancestry.(b) The genetic information machinery is similar in bacteria and man.(c) Diverse kinds of organisms are evolved at various periods of time, hence their basic life processes are different.(d) Microbes, plants, and animals appear so distinct from one another that theycannot have similarities in patterns of reproduction.Ans. (d)

44. Which of the following groups contains only natural fuels?(a) Petrol, diesel, natural gas(b) Petroleum, wood, coke(c) Coal, charcoal, wood(d) Coal, wood, petroleumAns. (d)

45. Manufacture of hydrogen bomb involves the principle of(a) a controlled chain reaction involving nuclear fission,(b) an uncontrolled chain reaction involving nuclear fission.

(c) a controlled chain reaction involving nuclear fusion.(d) an uncontrolled chain reaction involving nuclear fusion.Ans. (d)



46. Which of the following groups of organisms possesses exoskeleton?(a) Fishes(b) Coelenterates(c) Arthropoda(d) MolluscsAns. (c)

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