CBSE Sample Papers for Class 9 SA2 Science Solved 2016 Set 8

                                               SECTION-A
Q.1. What is meant by Avogadro’s constant ?

Q.2. How many chambers are present in the heart of (a) frog and (b) man ?

Q.3. Define one watt.

Q.4. Mention characteristics of nucleus of an atom.

Q.5. What are coelenterates ? Mention some examples.

Q.6. A boy of mass 60 kg is running at 5 ms-1. Find the work done by him.

Q.7. What are isotopes ? Write the isotopes of uranium. What are their use?

Q.8. Write the formula of (a) Sodium chloride (b) Aluminium oxide (c) Aluminium sulphate.

Q.9. Describe three characteristics of the division Bryophyta.

Q.10. Differentiate between Gymnosperms and Angiosperms.

Q.11. Priya’s mother uses iodised salt at home. One day while cooking, Priya asked her mother about iodised salt. She said people who do not use iodised salt suffer from deficiency of iodine which leads to goitre and hypothyroidism.
(a)What are physical symptoms of goiter and hypothyroidism ?
(b)How will you inform others about the importance of iodised salt ?
(c)Is iodine metal or non-metal ?
(d)Find physical properties of iodine.
(e)What is difference between iodised salt and normal salt ?

Q.12. (a) Write full form of AIDS and its causing agent.
(b) Write two ways by which AIDS is transmitted from one person to the other.

Q.13. Define P.E. A person carrying 15 bricks each of mass 2 kg on his head moves to a height of 10 m in 30 s. Calculate power spent in carrying bricks.(g= 10 ms-2)

Q.14. Define : (a) pitch (b) quality (c) loudness of sound.

Q.15. Distinguish between loudness and intensity of sound.

Q.16. What is buoyancy? What are the factors on which buoyant factors depends?

Q.17. Define pressure and its SI unit. Differentiate between thrust and force.

Q.18. Explain between density and relative density with formula.

Q.19. Define each term and give examples :
(a) Isotopes                                                     (b) Isobars
(c) Isotones

Q.20. What are symptoms and causes of malaria? How can it be prevented and controlled?

Q.21. State Archimedes’ principle and verify it with an brief example.

                                                               SECTION – B
Q.22. – Q.24. OTBA Questions of 10 marks.

                                                                SECTION-C
Q.25.Who proposed the law of conservation of mass?
(a)    Boyle                                                        (b)   Lavoisier
(c)    Dalton                                                       (d)    Graham

Q.26.On heating a mixture of iron fillings and sulphur, it is observed that:
(a) the mixture sublimes                              (b) brown fumes are evolved
(c) a rey mass is formed                              (d) no change occurs

Q.27.Fungi shows which type of mode of nutrition :
(a)    autotrophic                                              (b)   saprophytic
(c)    heterotrophic                                           (d)    ingestive

Q.28.Chitin is …………………………………………….  in chemical nature.
(a)    carbohydrate                                          (b)   protein
(c)    fat                                                              (d)    vitamin

Q.29.Gymnosperm have ……………………………………………  seed.
(a)    three                                                         (b)   naked
(c)    covered                                                    (d)    no

Q.30.Hydra belongs to ………………………………………….  phylum.
(a)    coelenterate                                           (b)   platyhelminthes
(c)    nematode                                                (d)    annelida

Q.31.Liquid which has highest density is :
(a)    alcohol                                                     (b)   mercury
(c)    kerosene                                                  (d)    water

Q.32.Relative density of water is ………………………………………………….
(a)    1                                                                (b)   10
(c)    100                                                            (d)    1000

Q.33.Sound waves cannot pass through :
(a) vacuum                                                     (b) glass
(c) iron                                                             (d) air

Q.34.What will be the correct observations regarding the seeds and flowers of gram plants ?

Q.35.Why does the pointer of a spring balance move up when the stone suspended from it is immersed in water ?

Q.36.Why should you take a long slinky in the experiment involving a slinky ?

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