Kendriya Vidyalaya, Sikar

Formative Assessment-3

Class IX

MM: 40                                                                                                                                                                Time duration: 90 mins

Section A (Chemistry)

Q1. Calculate the molecular mass of the following Substance :                                                          6X1/2=3

i)  HNO3                                ii) S8                                       iii) K2CO3

iv) C2H5OH                           v) CaCo3                               vi) Al(OH)3

Q2. Write the chemical formula of the following substances :                                                           6X1/2=3

i) Aluminium oxide                          ii) Calcium hydroxide

iii)  Ammonium Sulphate              iv) Ferric chloride

v) Sodium Sulphite                          vi) Zinc Phosphate

Q3. Convert the following masses into moles :

i) 64 gm of Oxygen gas                   ii) 20 gm of water

iii) 34 gm of Ammonia                                    iv) 22 gm of Carbon dioxide

v) 120 gm of Calcium                                       vi) 52 gm of Helium

Q4. Calculate the number of aluminium ions present in 0.05 gm alluminium oxide.

 

Section B (Biology)

Q5. Write the name of largest phylum of Animalia kingdom.                        1

Q6. Which group of plants is known as “Amphibians of Plantae kingdom” and why?                         1+1

Q7. What is the concept of Binomial Nomenclature? Explain and write the rules also.                      1+2

Q8. A. Write the name of kingdom in which bacteria are kept in five kingdom system. Give one example of this kingdom.                                                                                                                                                                                1

B. Write the name of group of plants with naked seeds. Give one example of this group.      1

C. Write the names of two scientists who proposed five kingdom system.                                    1

Q9. Write the name of phylum of following animals:                                                                                        4

i)Starfish                             ii) Bat                     iii) Hydra                                              iv) Unio

v) Earthworm                    vi) Cockroach     vii) Balanoglossus                             viii) Sycon

 

Section C (Physics)

Q10. A lift carries five persons with an average mass of 60 kg to a height of 27 m in 9 secs at a constant speed. What is the power of the lift.                                                                                                                              2

Q11. What is the commercial unit of the energy?                                                                                              1

Q12. A ball of mass 200 gm is thrown vertically upwards with a velocity of 20 m/sec. Calculate its P.E. after 2 secs. (Take g=9.8 m/s2).                                                                                                                                       2

Q13. Define work. What is the work done on a body moving in a circular path? What is the SI unit of work? Define it.                                                                                                                                                                       3

Q14. State law of conservation energy. Prove that the mechanical energy is always constant for a freely falling body.                                                                                                                                                                      3

Q15. Answer in one word or sentence :                                                                                                                 3

  1. Name the physical quantity that defines the rate of doing work.
  2. What is the work done by the moon in rotating around the earth.
  3. Is power a scalar or vector quantity?

. What is the commercial unit of the energy?                                                                                              1

Q12. A ball of mass 200 gm is thrown vertically upwards with a velocity of 20 m/sec. Calculate its P.E. after 2 secs. (Take g=9.8 m/s2).                                                                                                                                       2

Q13. Define work. What is the work done on a body moving in a circular path? What is the SI unit of work? Define it.                                                                                                                                                                       3

Q14. State law of conservation energy. Prove that the mechanical energy is always constant for a freely falling body.                                                                                                                                                                      3

Q15. Answer in one word or sentence :                                                                                                                 3

  1. Name the physical quantity that defines the rate of doing work.
  2. What is the work done by the moon in rotating around the earth.
  3. Is power a scalar or vector quantity?