RAMAKRISHNA SENIOR SECONDARY SCHOOLHALF YEARLY EXAM-2019-20

QUESTION BANKSCIENCECLASS-9

One markCHAPTER :2- (CH-2: IS MATTER AROUND US PURE?)1. What are the two components of a solution?2. What is meant by concentration of a solution?3. Why particles in a true solution cannot be seen with naked eyes?4. How is heating of sugar and heating of ammonium chloride different from each other?5. What is fractionating column?6. Name the process used to obtain pure copper sulphate from impure sample.7. Define a solution.8. What are solute and solvent in aerated drinks?9. Define the term chromatography.10. What is the particle size of a colloidal solution?11. Name the two components of colloidal solutions.12. Give an example in which physical and chemical changes take place together.

CH-6:TISSUES1.Define tissue. 2.State the location of apical meristem.3. Name the fluid matrix of connective tissue.4. Name the tissue present under the skin and arranged in pattern of layers.5. Name the basic packing tissue of plant.6. State one function of parenchyma.7. What name is given to parenchyma cell which contain chlorophyll?8.Name the cells that stores fats in our body.9. Define differentiation.10. What are the functions of xylem .11. Name the functions of phloem. 12.Why do cells of sclerenchyma tissue have narrow lumen?13. Name the tissue present in the veins of leaves.14. Name the dead element of phloem.15. Define complex tissues.16. Why is blood considered as connective tissue?17. Why skeletal muscle is known as striated muscle?18. What are the other two names of smooth muscles?19. Name the connective tissue with solid matrix.20. Identify flexible connective tissue found in nose.21. Write the composition of bone and cartilage.22. Which connective tissue joins muscle to bone.23.Which type of muscle cells show rhythmic contraction and relaxation.

24. What is the function of ligament?25. Give one difference between tendon and ligament.26. Give one difference between adipose and areolar tissue.27. Give one difference between bone and cartilage.28. Which muscle has spindle shape cells.29.. Give one word for the junction of two neurons.30. What is basic unit of nervous system.Ch-9:Forces and Laws of Motion1. A batsman hits a cricket ball which then rolls on a level ground. After covering ashort distance, the ball comes to rest. Why the ball slows to a stop?2. What is the momentum of an object of mass m, moving with a velocity v?3. Using a horizontal force of 200 N, we intend to move a wooden cabinet across a floorat a constant velocity. What is the friction force that will be exerted on the cabinet?4. What is the S.I. unit of momentum?5. What is the numerical formula for force?6. If the initial velocity is zero then whichtthe force acting on it?7. What is the S.I. unit of force.8. Newton’s first law of motion is also known as?9. Which law explains swimming?10. What is the S.I. unit of weight ?11. Which equation defines Newton’s Second law of motion?12. The people in the bus are pushed backwards when the bus starts suddenly why?13. If the force acting on the body is zero what is Its momentum ?14. The inability of the body to change its state of rest or motion is known as?Ch: 10-Gravitaion1. What is the acceleration of free fall?2. What do we call the gravitational force between the earth and an object?3. In what direction does the buoyant force on an object immersed in a liquid act?4. Even though stone also attracts earth towards itself, earth does not move why?5. The weight of an object is greater on moon or on earth?6. Weight of an object has S.I, unit of?7. If the acceleration due to gravity at a place is more, then what will be weight of that object ?8. If the distance between the object increase, mass remaining same then thegravitational forces between the object will be?9. what are The S. I. units of mass, force and weight ?10. What is the S. I. unit of Pressure?11. What is units of Pressure?12. What is unit of Relative Density?13. If the area of an object is less than the pressure acting on that object will be?3 MARKSCHAPTER :2- (CH-2: IS MATTER AROUND US PURE?)1. Mention three characteristics of a mixture.

2. How can a saturated solution be made unsaturated?3. Define solubility. How does solubility of a solid in water change with temperature?4. Give one example each of the following

(i) Solution of a gas in liquid(ii) Solution of a liquid in solid(iii) Solution of a solid in solid

5. Define distillation. What type of liquids (substances) can be separated by this process?6. Why copper sulphate solution in water does no show Tyndall effect, but mixture of water and

milk shows?7. A mixture containing two liquids is placed in separating funnel. Answer the following

questions:(a) What type of liquids form the mixture?(b) Which of the liquid will form the lower layer?(c) What is the basis of this method?

CH-6:TISSUES

1. Write the three types of meristematic tissue with their function.2. Give at least three differences between parenchyma and collenchymas.3. Give three differences between collenchyma and sclerenchyma.4. Write three differences between xylem and phloem.5. Define stomata .Explain its structure and give its function.6.Explain the structure of epidermis and write its functions.7. Write at least three differences between striated and unstriated muscles.8. Write the characteristics of cardiac muscle.9. Draw the labeled diagram of striated , unstriated and cardiac muscle.10. What is neuron ,Draw its labeled diagram.11.Draw the diagram of parenchyma, collenchyma and sclerenchyma tissue.12. Explain the structure of neuron.Ch-9:Forces and Laws of Motion1. Which of the following has more inertia:(a) a rubber ball and a stone of the same size?(b) a bicycle and a train?(c) a five rupees coin and a one-rupee coin?2. In the following example, try to identify the number of times the velocity of the ballchanges:“A football player kicks a football to another player of his team who kicks the footballtowards the goal. The goalkeeper of the opposite team collects the football and kicks ittowards a player of his own team”.Also identify the agent supplying the force in each case.3. Explain why some of the leaves may get detached from a tree if we vigorously shakeits branch.4. Why do you fall in the forward direction when a moving bus brakes to a stop and fallbackwards when it accelerates from rest?5. If action is always equal to the reaction, explain how a horse can pull a cart.6. Explain, why is it difficult for fireman to hold a hose, which ejects large amounts ofwater at a high velocity.

7. From a rifle of mass 4 kg, a bullet of mass 50 g is fired with an initial velocity of 35m/s.Calculate the initial recoil velocity of the rifle.8. A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg, along a horizontal track. Ifthe engine exerts a force of 40000 N and the track offers a friction force of 5000 N, thencalculate:(a) the net accelerating force;(b) the acceleration of the train; and(c) the force of wagon 1 on wagon 2.9. Two objects, each of mass 1.5 kg, are moving in the same straight line but in oppositedirections. The velocity of each object is 2.5 m s-1 before the collision during which theystick together. What will be the velocity of the combined object after collision?11. A hockey ball of mass 200 g travelling at 10m/s is struck by a hockey stick so as toreturn italong its original path with a velocity at 5m/s . Calculate the change ofmomentum occurred in the motion of the hockey ball by the force applied by thehockey stick.12. A bullet of mass 10 g travelling horizontally with a velocity of 150m/s strikes astationary wooden block and comes to rest in 0.03 s. Calculate the distance ofpenetration of the bullet into the block. Also calculate the magnitude of the forceexerted by the wooden block on the bullet.13. An object of mass 1 kg travelling in a straight line with a velocity of 10m/s collides with, and sticks to, a stationary wooden block of mass 5 kg. Then they bothmove off together in the same straight line. Calculate the total momentum just beforethe impact and just after the impact. Also, calculate the velocity of the combined object.14. How much momentum will a dumb-bell of mass 10 kg transfer to the floor if it fallsfrom a height of 80 cm? Take its downward acceleration to be 10m/s2 .15. A force of 15 N acts for 5s on a body of mass 5 Kg which is initially at rest. Calculate.a) final velocity of the bodyb) the displacement of the body16. Differentiate between mass and weight?17. A scooter is moving with a velocity of 20 m/s when brakes are applied. The mass ofthe scooter and the rider is 180Kg. the constant force applied by the brakes is 500 N.a) How long should the brakes be applied to make the scooter comes to a halt?b) How far does the scooter travel before it comes to rest?18. State Newton’s third law of motion and how does it explain the walking of man onthe ground?19. With what speed must a ball be thrown vertically up in order to rise to a maximumheight of 45m? And for how long will it be in air?20. State Newton’s second law of motion and derive it mathematically?21. A bullet travelling at 360 m/s; strikes a block of soft wood. The mass of the bullet is2.0g. The bullet comes to rest after penetrating 10 cm into the wood?a) Find the average deceleration force exerted by the wood.

b) Find the time taken by the bullet to come to rest.

22. A boy throws a stone up with a velocity of 60 m/s.1) How long will it take to reach the maximum height2) What will be the maximum height reached by the stone?3) What will be its velocity when it reaches the ground?23. A certain particle has a weight of 30 N at a place where the acceleration due togravity is 9.8 m/s2a) What are its mass and weight at a place where acceleration due to gravity is 3.5m/s2b) What will be its mass & weight at a place where acceleration due to gravity is zero.24. Why does a person while firing a bullet holds the gun tightly to his shoulders?25. A car is moving with a velocity of 16 m/s when brakes are applied. The force appliedby the brakes is 1000 N. The mass of the car its passengers is 1200 Kg.a) How long should the brakes be applied to make the car come to a halt?b) How for does the car travel before it comes to rest?Ch: 10-Gravitaion1. State the universal law of gravitation.2. Write the formula to find the magnitude of the gravitational force between the earthand an object on the surface of the earth.3. What are the differences between the mass of an object and its weight?4. Why is the weight of an object on the moon 1/6th its weight on the earth?5. Why does an object float or sink when placed on the surface of water?6. What happens to the force between two objects, if(i) the mass of one object is doubled?(ii) the distance between the objects is doubled and tripled?(iii) the masses of both objects are doubled?7. What is the importance of universal law of gravitation?8. A stone is thrown vertically upward with an initial velocity of40 m/s.Taking g=10m/s2 , find the maximum height reached by the stone. What is the netdisplacement and the total distance covered by the stone?9. The volume of a 500 g sealed packet is 350cm3. Will the packet float or sink in waterif the density of water is 1g/cm3 ? What will be the mass of the water displaced by this packet?10. The radius of earth is 6370 Km and of mars is 3400 Km. If an object weighs 200 N onearth, what will be its weight on mars. The mass of mars is 0.11 that of earth.11. Determine the value and units of universal Gravitational constant, G?13. A stone is dropped from a height of 50 m on earth. At the same time, another stoneis thrown vertically upwards from the ground with a velocity up wards from theground with a velocity of 50 m/s. At what height from the ground will the two stonesmeet14. What is acceleration due to gravity and calculate its value on earth?15. A ball is thrown vertically upwards. The speed of the ball was 10 m/s when it hadreached one half of its maximum height.(a) How high does the ball rise?

(b) Find the velocity and acceleration 1s after it is thrown.16. How does weight of a rocket change as it moves from earth to moon?17. Give a mathematical proof of the Archimedes principle?18. What is the magnitude of the gravitational force exerted by a 15 Kg mass on a 25 Kgmass separated by a distance of 25 cm. What is the acceleration produced on eachmass?19. A stone is dropped from a height of 100 m on earth. At the same time, another stoneis thrown vertically upwards from a ground with a velocity of 50 m/s. At what heightfrom the ground will the stone meat?22. What makes a body to float or sink in a liquid?

5 MarksCHAPTER :2- (CH-2: IS MATTER AROUND US PURE?)1. (i) What are elements?

(ii) What are the three main types of elements? (iii) Write a property of each type of element. 2. Distinguish among the true solution, suspension and colloid in a tabular form.3. You are provided with a mixture of naphthalene and sodium chloride. Suggest an activity to

separate them with well-labelled diagram.4. (i) Write the steps involved in the process of obtaining pure copper sulphate from an

impure sample.(ii) Give any one application of this method.(iii) Why is this technique better than simple evaporation to purify solids?

5. Classify each of the following as a physical or a chemical change. Give reasons.(i) Drying of a shirt in the sun(ii) Churning of milk cream to get butter(iii) Burning of kerosene in a lantern(iv) Rising of hot air over a radiator(v) Digestion of food

CH-6:TISSUES

1. Define meristematic tissue. Give the function and location of its three types with the help of labeled diagram .2. What is parenchyma. Draw the diagram . Also write its three types with their functions.3. Write any five types of connective tissues with their functions.4. What is nervous tissue ? Explain its structure with the help of diagram.5. List three functions of epidermis . What changes occur in epidermis as the plant grow

Ch-9:Forces and Laws of Motion1. Two objects of masses 100 g and 200 g are moving along the same line and directionwith velocities of 2m/s and 1m/s , respectively. They collide and after the collision,the first object moves at a velocity of 1.67m/s. Determine the velocity of the secondobject.

2. A truck starts from rest and rolls down a hill with a constant acceleration. It travels adistance of 400 m in 20 s. Find its acceleration. Find the force acting on it if its mass is 7metric tonnes (Hint: 1 metric tonne = 1000 kg.)

3. A stone is dropped from a 100m high tower. How long does it take to fall?a) the first 50m andb) the second 50m.

4. A body of mass 2Kg is at rest at the origin of a frame of reference. A force of 5 N actson it at t = 0. The force acts for 4S and then stops.a) What is the acceleration produced by the force on the body.b) What is the velocity at t= 4sc) Draw the v – t graph for the period t = 0 to t = 6S.d) Find the distance travelled in 6S.Ch: 10-Gravitaion1. A stone is allowed to fall from the top of a tower 100 m high and at the same timeanother stone is projected vertically upwards from the ground with a velocity of 25 m/s.Calculate when and where the two stones will meet.2. A ball thrown up vertically returns to the thrower after 6 s. Find(a) the velocity with which it was thrown up,(b) the maximum height it reaches, and(c) its position after 4 s.MCQSCHAPTER :2- (CH-2: IS MATTER AROUND US PURE?)1.A group of students added few crystals of copper sulphate in distilled water. They stirred the solution properly. Which one is true?a)Particles are not visible b)Particles are visible c)path of the beam is visible. d)particles will settle down2.A student prepare a mixture by mixing sugar,starch and sand in water. He named them as solution A ,B and C respectively.a) Beaker A- will be stable b) beaker B- will be unstable c) Beaker C –will be stable d)Beaker A- will be unstable.3.In above question which mixture can be separated through the filter papera)Beaker –A b) Beaker –B c) Beaker –C d) none4.In Q.2 which mixture will show Tyndal effect?a) Beaker-A b) Beaker-B c) Beaker-C d) all the above5.A student mixed iron filings and sulphur and divided the mixture in two parts.He kept first part as sample –A and heated the other part to get sample –B.Now find the correct answer.a)Sample-A is homogeneous b) Sample –A is heterogeneous c)Sample-B is homogeneousd) Both b and c6. In Q.5 if magnet is brought near samples then:a)Iron will be attracted in sample –A b) Iron will be attracted in sample –B c) both d) noneCH-6:TISSUES

1. The cells which are dead at maturity in plants are ;

(a) Parenchyma (b) collenchyma (c) Chlorenchyma (d) Sclerenchyma.2. Thickening at the corner of the plant cells is characteristic feature of (a) Parenchyma (b) collenchyma (c) Chlorenchyma (d) Sclerenchyma.3. Striated muscles are; (a) uninucleate (b) multinucleate (c) binucleate (d) Any of the above4. Light and dark bands are present in (a) Striated muscles (b) smooth muscles (c) cardiac muscles (d) Both (a) and (b)5.Spindle shaped muscles are; (a) Striated muscles (b) smooth muscles (c) cardiac muscles (d) Both (a) and (b)6. Aditi observe following observations while looking into a permanent slides (i) Cells are long and cylindrical (ii) Presence of light and dark bands (a) Striated muscles (b) smooth muscles (c) neuron (d) parenchyma cells7. The cell body of nerve cell is called (a) cyton (b) axon (c) neuron (d) dendrites8. Select the correct combination of characters for striated muscles; (a) spindle shaped , striations , multinucleated (b) cylindrical shape , involuntary , multinucleated © unbranched , involuntary , cylindrical shaped (d) voluntary , cylindrical , multinucleate.9. Rhythemic contraction and relaxation through out the life is performed by (a) Striated muscles (b) smooth muscles (c) cardiac muscles (d) Both (a) and (b) . 10. The cells which provide stiffness to the part where they are present are; (a) fibre (b) sclereids (c) chlorenchyma (d) aerenchyma.CH: 9 AND 10

Question 1.The density of which of the following cannot be measured accurately using a spring balance and a measuring cylinder? (a) A ball filled with a liquid having a leakage(b) A block of ice at 0 °C(c) A small porous solid(d) All of these

Question 2.You are given a sphere of radius 2 cm. If you are asked to select a best suited spring balance to determine its weight, then out of the following which one would you prefer? The sphere is made of an alloy of density 7 x 103 kg m-3. (а) Range 0 – 1000 gwt, Least count 5 g wt(b) Range 0 – 500 gwt, Least count 2.5 gwt(c) Range 0 – 250 gwt, Least count 2.5 gwt(d) Range 0 – 100 gwt, Least count 1 gwt

Question 3.The water level in a measuring cylinder, before and after immersing a metal cube in it, is shown in the figure. The volume of the metal cube is: 

(a) 24 cm3

(b) 22 cm3

(c) 20 cm3

(d) 18 cm3

Question 4.Four measuring cylinders with least count 2.5 ml, 1.0 ml and 0.5 ml and 0.2 ml are available. Which one should be preferred for finding the density of a solid accurately? The one having least count:

(a) 2.5 ml(b) 1.0 ml(c) 0.5 ml(d) 0.2 ml

Question 5.Three students A, B and C noted the water level reading in the measuring cylinder, as shown in figure. The correct way of taking reading is of: 

(a) A and C(b) Only B(c) Only C(d) A and B

Question 6.In a spring balance the space between 0 and 25 g marks is divided into 10 equal parts. The least count of spring balance is: (a) 2.5 g wt(b) 25 g wt(c) 0.25 g wt(d) 15 g wt

Question 7.The least count of the spring balance shown in the diagram is: (a) 5 g(b) 2 g(c) 1 g(d) 0.5 g

Question 8.In the following figure the zero error is: 

(a) 2 g wt(b) -2 g wt(c) 5 g wt(d) -5 g wt

Question 9.If we want to determine the volume of a solid by immersing it in water, the solid should be(a) lighter than water.(b) heavier than water.(c) insoluble in water.(d) heavier than water and insoluble

Question 10.The correct way of reading the liquid level is shown in

(a) Figure A(b) Figure B(c) Figure (d) Figure D

Question 11.A given solid is weighed in air using a spring balance. It is then weighed by immersing it fully, in each of the three different vessels A, B and C as shown. The weight of solid would be 

(a) more in vessel C(b) more in vessel B(c) more in vessel A(d) equal in all the three vessels.

Question 12.The level of water in a measuring cylinder before and after a solid of 8 g mass is fully immersed into it as shown.

The density of the given solid is: (a) 4 g/cm3

(b) 2 g/cm3

(c) 3 g/cm3

(d) None of these

Question 13.The least count of the spring balance and the measuring cylinder respectively are: 

(a) 1 g wt; 1 ml(b) 1 g wt; 2 ml(c) 2 g wt; 1 ml(d) 2 g wt; 2 ml

Question 14.A student performing the experiment ‘To determine the density of solid (denser than water), by using spring balance and measuring cylinder’. During the experiment, he observed that a few air bubbles are sticking to the solid when immersed in water. The presence of air bubbles will lead to(a) no change in density (b) increase in density(c) decrease in density (d) none of the above

Question 15.A spring balance reads 10 kg when a bucket of water is suspended from it. An iron piece having some mass is suspended by another string and immersed in the bucket with half of its volume. The reading of balance will(a) decrease(b) increase(c) remain the same(d) another spring balance needed

Question 16.While determining the density of a copper piece using a spring balance and a measuring cylinder, seema carried out the following procedure:(i) Noted the water level in the measuring cylinder without the copper piece.(ii) Immersed copper piece in water.(iii) Noted the water level after immersing copper in the measuring cylinder.(iv) Removed the copper piece from the water and immediately weighted it using a spring balance.The wrong step in the procedure is:(a) (i)(b) (ii)(c) (iii)(d) (iv)

Question 17.

Four measuring cylinders with different least counts are shown in figures A, B, C and D respectively. The most suitable cylinder for determining the volume of a cube of side 1 cm is(a) A(b) B(c) C(d) D

Question 18:A given solid is weighed in air using a springbalance. It is then weighed separately by immersing it fully first in a vessel containing tap water and then in a vessel containing salt solution. The reading of the spring balance would be [CBSE 2012. 2010\(a) least in air(b) least in water(c) least in salt solution(d) equal in all the three cases.

Question 19:The weight of a body felt in tap water and salty water are WA and WB respectively, then(a) WA =WB

(b) WA > WB

(c) WA < WB

(d) WB = 2WA.

Question 20:A student lowers a body in a liquid filled in a container. He finds that there is maximum apparent loss in weight of the body when(a) it just touches the surface of the liquid(b) it is completely immersed in the liquid(c) it is partially immersed in the liquid(d) it is partially immersed and also touches the sides of the container.

Question 21:Four students A, B, C and D while performing an experiment on establishing the relation between the loss of weight of small solid when fully immersed in tap water, and the weight of water displaced by it, used four different shapes of overflow cans containing water as shown.The arrangement that would give correct results is that of student

(a) A(b) B(c) C(d) D

Question 22:Three students used three different

containers (A), (B) and (C) of different shapes, for finding the loss in weight of solids when dipped in water.On dipping a solid sphere in these containers they would observe that the loss in weight is

(a) Maximum in A(b) Minimum in A(c) Maximum in B(d) Same in all

Question 23:If WA, WB and WC represent the weights of the solid in the figure shown below, then

(a) WA – WB =WC

(b) WA < WC < WB

(c) WA < WC > WB

(d) WA > WC > WB

Question 24:For performing an experiment to verify Archimedes’ principle, a student used a spring balance with a zero error of 4 gwt. He used to measure the weight of a solid metallic block as shown in the figure below. The solid metallic block was then lowered in water contained in an overflow jar and the water displaced by this block was collected in graduated or measuring cylinder as shown in figure.

The apparent loss in weight of the solid metallic block is(a) 30 g wt(b) 40 g wt

(c) 35 g wt(d) 38 g wt

Question 25:If a particular solid body is immersed in two different liquids with different densities, then weight of the displaced li paid will be(a) less in the denser liquid(b) equal in the denser liquid(c) more in the denser liquid with different volume displaced(d) more in the denser liquid with same volume displaced.

Question 26:The spring balance shown here is used to measure the mass of a given solid. The mass of the solidis

(a) 115 g(b) 118 g(c) 120 g(d) 125 g

Question 27:In the experiment to establish the relation between loss in weight of an immersed solid with theweight of water displaced by it, the correct set-up is shown in figure

(a) A(b) B(c) C(d) D

Question 28:While establishing the relation between the loss in weight of an immersed solid with the weight of salty water displaced, a student carried out the following procedure:(i) noted the salty -water level in the measuring cylinder without solid body.(ii) immersed the solid body completely in salty water.(iii) noted the rise in salty water level in the measuring cylinder with solid body.(iv) weight of the displaced salt solution collected in the beaker was not recorded in the observation table.The correct steps in the procedure is(a) step (i) only(b) step (i) and (ii) only(c) step (i), (ii) and (in) only(d) all the four steps.

Question 29:Three students A, B and C determined the volume of a solid by immersing it in water in the overflow cans set-up as shown. The result obtained will be wrong for

(a) student A(b) student B(c) student C(d) all three students.

Question 30:The maximum loss in weight of the body is when(a) it is completely immersed in a liquid(b) it is partially immersed in a liquid(c) it is just touching the surface of a liquid(d) it is completely sunk and settles on the body.

Question 31:The readings of the spring balance will be

(a) equal to each other in all the cases A, B and C.(b) equal to each other in cases A and C only.(c) equal to each other in cases B and C only.(d) different in every case.

Question 32:Out of the following the best set-up for the experiment for measuring the loss of weight immersed in a liquid, is the set-up labelled as

(a) A(b) B(c) C(d) D