Quarterly Model Questions Paper

10th Standard EM

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Science

Time : 02:45:00 Hrs
Total Marks : 75
    12 x 1 = 12
  1. Inertia of a body depends on 

    (a)

    weight of the object

    (b)

    acceleration due to gravity of the planet

    (c)

    mass of the object

    (d)

    Both a & b

  2. One kilogram force equals to

    (a)

    9.8 dyne

    (b)

    9.8 × 104 N

    (c)

    98 × 104 dyne

    (d)

    980 dyne

  3. The resistance of a body to change its direction of motion is

    (a)

    force

    (b)

    momentum

    (c)

    inertia of motion

    (d)

    inertia of direction

  4. In a simple circuit, why does the bulb glow when you close the switch?

    (a)

    The switch produces electricity

    (b)

    Closing the switch completes the circuit.

    (c)

    Closing the switch breaks the circuit.

    (d)

    The bulb is getting charged.

  5. Which of the following statement regarding an atom is always correct?

    (a)

    An atom has equal number of electrons and protons

    (b)

    An atom has equal number of electrons and neutrons

    (c)

    An atom has equal number of electrons, protons and neutrons

    (d)

    An atom has equal number of protons and neutrons

  6. Pick the correct order on decreasing trend of atomic size

    (a)

    Mg, Mg+, Mg2+

    (b)

    Mg+,Mg2+,Mg

    (c)

    Mg2+,Mg+,Mg

    (d)

    Mg2+,Mg, Mg+

  7. ______________ is the outermost layer of the root.

    (a)

    Epiblem

    (b)

    Cortex

    (c)

    Endodermis

    (d)

    Stele

  8. The other name of red blood corpuscles is _________

    (a)

    erythrocytes

    (b)

    leucocytes

    (c)

    granulocytes

    (d)

    agranulocytes

  9. Gibberellins are efficient than _____ in inducing the formation of seedless fruit.

    (a)

    Auxin

    (b)

    Cytokinin

    (c)

    Ethylene

    (d)

    Abscisic Acid

  10. Which one of the following is an IUCD?

    (a)

    Copper – T

    (b)

    Oral pills

    (c)

    Diaphragm

    (d)

    Tubectomy

  11. _______from anterior pituitary stimulates milk secretion

    (a)

    Oxytocin

    (b)

    Prolactin

    (c)

    Progestrone

    (d)

    Oestrogen

  12. In human,each cell normally consists _________of chromosomes.

    (a)

    23 pairs

    (b)

    22 pairs

    (c)

    20 pairs

    (d)

    12 pairs

  13. 7 x 2 = 14
  14. What is Torque? Give examples moment of force.

  15. Give examples for the cases in which the time of action of force is very short to have a large force?

  16. State Rayleigh’s law of scattering

  17. What are the conclusions obtained from laws of refraction?

  18. Out of lOOWand 40W bulbs) which has high electrical resistance when in use.

  19. What is gram molecular mass?

  20. What is the shape of RBC in human blood?

  21. 7 x 4 = 28
  22. N2 + 3 H2 → 2 NH3
    (The atomic mass of nitrogen is 14, and that of hydrogen is 1)
    1 mole of nitrogen (_______g) +
    3 moles of hydrogen ( _________ g) →
    2 moles of ammonia ( _________ g)

  23. Explain Solid solution, Liquid solution and Gaseous solution.

  24. List out the parasitic adaptations in leech.

  25. Explain the Digestive System of Rabbit

  26. What is colostrum? How is milk production hormonally regulated ?

  27. Luteal phase of the menstrual cycle is also called the secretory phase. Give reason

  28. How are chromosomes classified based on the position of centromere?

  29. 1 x 7 = 7
  30. What are the phases of menstrual cycle? Indicate the changes in the ovary and uterus.

  31. 2 x 7 = 14
  32. A force of 60 N acts on a body for 10 s. What is the change in momentum?

  33. Two bulbs are having the ratings as 60 W, 220 V and 40 W, 220 V respectively. Which one has a greater resistance?

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