First Mid Term Model Questions

10th Standard EM

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Science

Time : 01:00:00 Hrs
Total Marks : 50
    5 x 1 = 5
  1. If the Earth shrinks to 50% of its real radius its mass remaining the same, the weight of a body on the Earth will

    (a)

    decrease by 50%

    (b)

    increase by 50%

    (c)

    decrease by 25%

    (d)

    increase by 300%

  2. The resistance of a body to change its state of motion is called

    (a)

    force

    (b)

    momentum

    (c)

    inertia of motion

    (d)

    inertia of direction

  3. The physical quantity which is equal to change in momentum is

    (a)

    velocity

    (b)

    acceleration

    (c)

    force

    (d)

    impulse

  4. Where should an object be placed so that a real and inverted image of same size is obtained by a convex lens

    (a)

    f

    (b)

    2f

    (c)

    infinity

    (d)

    between f and 2f

  5. ______ is an important metal to form amalgam

    (a)

    Ag

    (b)

    Hg

    (c)

    Mg

    (d)

    Al

  6. 5 x 1 = 5
  7. When a force of 1 N acts on a mass of 1 kg that is forced to move, the object moves with _____

    ()

    an acceleration of 1 ms-2

  8. _____ helps to change the speed of the rotation.

    ()

    Gears

  9. Atoms of different elements having same number of ___________ are called isotones

    ()

    neutrons

  10. Glycolysis takes place in ________. 

    ()

    cytoplasm

  11. _________ maintains the constant pressure inside the cranium.

    ()

    cerebro spinal fluid

  12. 5 x 2 = 10
  13. Define metallic radius.

  14. Raman went to a garden. He saw that the stem of the Banyan tree becomes thicker every year whereas such a change is not seen in a coconut tree. Can you give a explanation for this.

  15. Give the common name of the Hirudinaria granulosa

  16. What is imbibition?

  17. What are neuroglia.

  18. 5 x 3 = 15
  19. Two bodies have a mass ratio of 3:4 The force applied on the bigger mass produces an acceleration of 12 ms-2.What could be the acceleration of the other body, if the same force acts on it.

  20. Calculate the number of water molecule present in one drop of water which weighs 0.18 g.

  21. Explain the salient features of periods in the modern periodic table.

  22. Write a note on vascular tissue system.

  23. What are heart sounds? How are they produced?

  24. 3 x 5 = 15
  25. What are the types of inertia? Give an example for each type.

  26. An object is placed at a distance 20cm from a convex lens of focal length 10cm. Find the image distance and nature of the image.

  27. Our body contains a large number of cells ‘L’ which are the longest cells in the body. L has long and short branch called as ‘M’ and ‘N’ respectively. There is a gap ‘O’ between two ‘L’ cells, through which nerve impulse transfer by release of chemical substance ‘P’.
    (i) Name the cells L
    (ii) What are M and N?
    (iii) What is the gap O?
    (iv) Name the chemical substance P

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