Class IX Physics + Chemistry First Term Examination 2012-2013
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General Instructions:- Time- 2 hrs MM: 50
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1. Question 1 to 10very short answer questions of 1 mark each
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2. Question no 11 to 16 are short answer questions of 2 marks each
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3. Question no 17 to 22 are also short answer question carrying 3marks each
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4. Question no 23 and 24 are long answer question carrying 5 marks.
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1. What is the name given to the material which makes everything in the universe, in and Around us?
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2. What do you mean by the term ‘Pure substance’?
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3. What does odometer of an automobile measure?
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4. Which has more inertia - A bicycle or a train?
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5. Define sublimation.
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6. What is the nature of distance time graph for uniform motion of an object?
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7. What is the acceleration of free fall?
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8. Define acceleration? Give its units.
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9. Zinc is present in the laboratory in the form of (a) fillings (b) granules(c) ribbon(d) powder
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10. Magnesium is present in the laboratory in the form of (a) Fillings (b) granules(c) ribbon (d) powder
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11. Classify the following as chemical or Physical Change
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A. Cutting of tree B. Rusting of Iron C. Melting of Ice D. Burning of coal
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12. A racing car has uniform acceleration of 4m/s2. What distance will it cover in 10 seconds after if start.
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13. If action and reaction are equal and opposite than why can’t they cancel each other?
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14. Explain why some of the leaves may get detached from tree if we vigorously shake its branch.
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15. Name the technique to separate (i) butter from curd (ii) camphor from salt.
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16. What produces more severe burn boiling water or steam and why?
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17. Write the steps you would use for making tea use the words solute, solvent, solution, soluble, insoluble and filtrate
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18. What is displacement? An athlete completes 1 round of circular track of radius 105 m in 40 sec. What will be the distance covered and the displacement after 1 min 20 sec.
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19. State Newton’s universal law of gravitation. Deduce it mathematically.
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20. A stone is released from the top of a tower of a height 19.6 m. Calculate its final velocity just before touching the ground.
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21. Define suspension. Write two properties of each giving examples
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22. State Newton’s second law of motion. How it can be used to define the unit of force.
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23. How can we separate a mixture of two immiscible liquids? Draw a labeled diagram of the apparatus used.
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OR,
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a) List the differences in the states of matter ( Any three)
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b) List the factors which affect the rate of evaporation.
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24.(a) Define terms : Fusion, latent heat of fusion, boiling point, latent heat of vaporization
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(b) Give two examples each 1. Aerosol .2. Emulsion. 3. Gel
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OR,
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A stone is dropped from the edge of a roof .How long does it take to fall 4.9m?How fast does it move at the end of that fall ? How does it move at the end of 7.9m? What is its acceleration after 1 second and after 2 second?
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