CBSE Sample Papers for Class 9 SA2 Science Solved 2016 Set 5
More Solved Sample papers For Class 9 Science
Q.1. Mention the name given to the number of 6.0223 x 1023 particles.
Q.2. What is an electron ? Who discovered it ?
Q.3. Many vaccines form the public health programme of childhood immunisation for preventing infectious diseases. Name any two such diseases.
Q.4, What is meant by transformation of energy ? Explain with the help of two suitable examples. Q.5. Define time period and frequency. Give their SI units.
Q.6. Calcium carbonate decomposes on heating to form calcium oxide and carbon dioxide. When 10 g of calcium carbonate is decomposed completely, then 5.6 g of calcium oxide is formed ? Calculate the mass of carbon dioxide formed. Which law of chemical combination will you use in solving this problem ? State the law.
Q.7. Give reason for the following :
(a)Ions are more stable than atoms.
(b)Noble gases show low reactivity.
(c)An atom is electrically neutral.
Q.8. The discovery of subatomic particles led to a revolution in the study of matter. Name the scientists who discovered these sub-atomic particles.
Q.9. One day Disha who is studying in class IX went to mother dairy’s vegetable shop where she found some umbrella like structures being sold. She could immediately identify them.
(a)What is that structure ?
(b)To which kingdom does that belong ?
(c)Write two characteristic features of organisms belonging to this kingdom.
Q.10. Study the given chart carefully and fill in the blanks (a), (b) and (c) :
Q.11. Draw the diagram of spirogyra and label the following parts :
(a)Cell wall (b) Pyrenoid
(c) Nucleus (d) Chloroplast
Q.12. An engine supplies 148 Joules of energy. If it is used to raise vertically an object of mass 500 g, how high can it be lifted?(g=10 ms-2)
Q.13. (a) The volume of 40 g of a solid is 15 cm3. If the density of water is 1 g cm3, will the solid float or sink? State reason.
(b)Why is it easier to lift a heavy stone under water ?
Q.14. Distinguish between echo and reverberation, (give two points) Write one application of each.
Q.15. State Archimede’s Principle. Write its two applications.
Q.16. Shruti and Kriti were performing the experiment to find the pressure exerted by a cuboid kept on sand with its different faces. Shruti shared her thoughts with Kriti and told her that since the teacher had explained about pressure and area, therefore, she could guess the results.
(i) How can you relate pressure applied by an object with its area ?
(ii) What would be the observation of Shruti and Kriti
(iii) Which qualities about Shruti do you observe from here ?
Q.17. (a) Write chemical formulae of all the compounds that can be formed by the combination of following
(b)Molar mass of nitrogen is 14u. What will be the mass of one atom of nitrogen in grams?
18. X, Y and Z are living organisms.
(i)Identify the group to which they belong on the basis of following features :
(ii) X – microscopic, unicellular, prokaryotic
(iii) Y – microscopic, unicellular, eukaryotic and shows locomotion with the help of pseudopodia / flagella
(iv) Z – multicellular, filamentous, eukaryotic, autotrophic and aquatic Ob) Which amongst the above is most advanced ?
(v)Name one organism each belonging to the groups of X, Y and Z.
Q.19. What is a disease? Explain the various types of diseases giving one example of each.
Q.20. (i) The units of certain parameters of a mechanical waves are given : Name the corresponding parameter of a mechanical wave and define each.
(a)metre (b) metre per second
(c) hertz (d) second
(ii) Two sounds A and B are of different pitch B appears to be heavier as compared to A. What can be said about their comparative frequencies.
Q.21. (a) Does the sound of an exploded cracker in air travel faster than the sound produced by a humming bee ? State reason.
(b) List the three characteristics of a sound wave and state the factors on which these depend.
(c) State the SI units of wavelength and frequency.
SECTION – B
Q.22. – Q.24. OTBA Questions of 10 marks.
Q.23. Sound waves can travel:
(a) in vacuum (b) in any medium
(c) both in (a) and (b) (d) only in solid and gaseous medium
Q.26. A doctor applies a force of 50 N to the syringe’s piston of area 1.5 m2. The increase in pressure of the fluid in the syringe is :
(a) 33.3 Pa (b) 50 Pa
(c) 35.5 Pa (d) 30 Pa
Q.27. The SI unit of pressure is :
(a) newton (b) pascal
(c) joule (d) kgf
Q.28. The parts shown by (1) and (2) in the given diagram are :
(a) Gills and annulus (b) Pileus and gills
(c) Stipe and annulus (d) Pileus and stipe
Q.29. According to law of conservation of mass, in a chemical reaction :
(a)total mass of the reactants is equal to total mass of the products.
(b)total mass of the products is greater than the total mass of the reactants.
(c)total mass of the reactants is greater than total mass of the products.
(d)there is no relation between the mass of reactants and products.
Q.30. On complete combustion of a hydrocarbon in 0.22 g oxygen, 0.9 g of water and 0.44 g of C02 is produced. Mass of the hydrocarbon is :
(a) 0.66 g (b) 1.12 g
(c) 0.22 g (d) 0.44 g
Q.31. Soaked seeds of gram and wheat were given to Aman. He removed the seed coats to count the number of cotyledons and correctly concluded that:
(a)Gram : Monocotyledonous; Wheat: Monocotyledonous
(b)Gram : Dicotyledonous; Wheat: Monocotyledonous
(c)Gram : Monocotyledonous; Wheat: Dicotyledonous
(d) Gram : Dicotyledonous; Wheat: Dicotyledonous
Q.32. When you observe the roots and leaves of mustard plant you find that they have:
(a) fibrous roots and leaves with reticulate venation
(b) fibrous roots and leaves with parallel venation
(c)tap roots and leaves with reticulate venation
(d)tap roots and leaves with parallel venation
Q.33. Which stage in the life cycle of a mosquito is depicted in the figure given below ?
(a)larva stage (b) egg stage
(c) pupa stage (d) adult stage
Q.34. (a) Define density and write an expression for it.
(b) What is the SI unit of density ?
Q.35. Rohan observed that the mass of solid body is more in air as compared to the mass of solid body in water. Explain the observation.
Q.36. Name the habitat of earthworms and how is it useful for them ?
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