Question

Q.23. When heat is constantly supplied through a gas burner with low flame to melt ice, then the temperature of ice during melting: (a) increases very slowly (b) does not increase at all (c) first remains constant and then increases (d) increases to form liquid water Q.24. When water at 0°C freezes to form ice at the same temperature of 0°C, then it: (a) absorbs some heat (b) releases some heat (c) neither absorbs nor releases heat (d) absorbs exactly 33.4 × 10? J/kg of heat Q.25. Which of the following is considered to be the fifth state of matter? (a) Solid (b) Bose-Einstein Condensate (c) Liquid (d) All of these Q.26. Which of the following does not undergo sublimation? (a) Iodine (b) Sodium chloride (c) Ammonium chloride (d) Camphor Q.27. The latent heat of fusion of ice is : (a) 33.4 × 10? J/kg (b) 22.5 × 10? J/kg (c) 33.4 × 10? J/kg (d) 2.25 × 10³ J/kg Q.28. The temperature of an object is 375 K, it is equivalent to : (a) –102°C (b) 102°C (c) 475°C (d) –475°C Q.29. The boiling point of helium is –269°C. Its boiling point in kelvin is (a) 4 K (b) –4 K (c) 29 K (d) –542 K Q.30. When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation: (a) rises very slowly (b) rises rapidly until steam is produced (c) first rises and then becomes constant (d) does not rise at all Q.31. CO? can be easily liquified and even solidified because (a) it has weak forces of attraction (b) it has comparatively more force of attraction than other gases (c) it has more intermolecular space (d) it is present in atmosphere.

          Q.23. When heat is constantly supplied through a gas burner with low flame to melt ice, then the temperature of ice during melting:
(a) increases very slowly
(b) does not increase at all
(c) first remains constant and then increases
(d) increases to form liquid water
Q.24. When water at 0°C freezes to form ice at the same temperature of 0°C,
then it:
(a) absorbs some heat (b) releases some heat
(c) neither absorbs nor releases heat (d) absorbs exactly 33.4 × 10? J/kg of heat
Q.25. Which of the following is considered to be the fifth state of matter?
(a) Solid (b) Bose-Einstein Condensate
(c) Liquid (d) All of these
Q.26. Which of the following does not undergo sublimation?
(a) Iodine (b) Sodium chloride (c) Ammonium chloride (d) Camphor
Q.27. The latent heat of fusion of ice is :
(a) 33.4 × 10? J/kg (b) 22.5 × 10? J/kg
(c) 33.4 × 10? J/kg (d) 2.25 × 10³ J/kg
Q.28. The temperature of an object is 375 K, it is equivalent to :
(a) –102°C (b) 102°C (c) 475°C (d) –475°C
Q.29. The boiling point of helium is –269°C. Its boiling point in kelvin is
(a) 4 K (b) –4 K (c) 29 K (d) –542 K
Q.30. When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation:
(a) rises very slowly (b) rises rapidly until steam is produced
(c) first rises and then becomes constant
(d) does not rise at all
Q.31. CO? can be easily liquified and even solidified because
(a) it has weak forces of attraction
(b) it has comparatively more force of attraction than other gases
(c) it has more intermolecular space
(d) it is present in atmosphere.

Q.23. When heat is constantly supplied through a gas burner with low flame to melt ice, then the temperature of ice during melting:
(a) increases very slowly
(b) does not increase at all
(c) first remains constant and then increases
(d) increases to form liquid water
Q.24. When water at 0°C freezes to form ice at the same temperature of 0°C,
then it:
(a) absorbs some heat (b) releases some heat
(c) neither absorbs nor releases heat (d) absorbs exactly 33.4 × 10? J/kg of heat
Q.25. Which of the following is considered to be the fifth state of matter?
(a) Solid (b) Bose-Einstein Condensate
(c) Liquid (d) All of these
Q.26. Which of the following does not undergo sublimation?
(a) Iodine (b) Sodium chloride (c) Ammonium chloride (d) Camphor
Q.27. The latent heat of fusion of ice is :
(a) 33.4 × 10? J/kg (b) 22.5 × 10? J/kg
(c) 33.4 × 10? J/kg (d) 2.25 × 10³ J/kg
Q.28. The temperature of an object is 375 K, it is equivalent to :
(a) –102°C (b) 102°C (c) 475°C (d) –475°C
Q.29. The boiling point of helium is –269°C. Its boiling point in kelvin is
(a) 4 K (b) –4 K (c) 29 K (d) –542 K
Q.30. When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation:
(a) rises very slowly (b) rises rapidly until steam is produced
(c) first rises and then becomes constant
(d) does not rise at all
Q.31. CO? can be easily liquified and even solidified because
(a) it has weak forces of attraction
(b) it has comparatively more force of attraction than other gases
(c) it has more intermolecular space
(d) it is present in atmosphere.

Added by Daniel R.

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