A small amount of ice is placed in water at 00 C- It is observed that small amount of water freezes i-e- amount of ice increases- Why-A- As the ice at 00 C absorbs heat when it is placed in water at 00 CB- As the ice liberates heat when it is placed in water at 00 CC- As the ice must be at a sub-zero temperature and it absorbs heat when it is placed in water at 00 CD- As the ice must be at a temperature above zero and it absorbs heat when it is placed in water at 00 CE- As the ice must be at a temperature above zero and it liberates heat when it is placed in water at 00 C

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Question

A small amount of ice is placed in water at 0⁰C. It is observed that small amount of water freezes (i.e., amount of ice increases). Why?

As the ice at 0⁰C absorbs heat when it is placed in water at 0⁰C

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As the ice liberates heat when it is placed in water at 0⁰C

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As the ice must be at a sub-zero temperature and it absorbs heat when it is placed in water at 0⁰C

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As the ice must be at a temperature above zero and it absorbs heat when it is placed in water at 0⁰C

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As the ice must be at a temperature above zero and it liberates heat when it is placed in water at 0⁰C

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Solution

The correct option is C
As the ice must be at a sub-zero temperature and it absorbs heat when it is placed in water at 0⁰C

The temperature of the ice must be lesser than 0⁰C, only then it can absorb heat from water at 0⁰C and convert some of it into ice.

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Similar questions

Why does ice at 0⁰C have a better cooling effect than water at 0⁰C?

Q. When ice is converted into water at 0

^{0}

C, then it absorbs all the heat energy without increase in its temperature. What is this heat energy known as ?

Q. A vessel containing

100 g

water at

0^{\circ} C

is left in the middle of a room. In

15

minutes, the temperature of the water rises by

2^{\circ} C

. When an equal amount of ice is placed in the vessel, it melts in

10

hours. The specific heat of fusion of ice is
(Take specific heat capacity of water as

1 cal/g.deg

)

Q. A Carnot refrigerator absorbs heat from water at

0

and gives it to a room at

27

. When it converts

2 k g

of water at

0

into ice at

0

, the work done is (Latent heat of fusions of ice

= 333 \times 10^{3} J {k g}^{- 1}

Q. The specific heat of water

S_{w} = 4200

{Jkg}^{- 1} K^{- 1}

and the latent heat of ice

L_{f} = 3.4 \times 10^{5} {Jkg}^{- 1} K^{- 1} .

100

grams of ice at

0^{\circ}

is placed in

200 g

of water at

0^{\circ} .

The amount of ice that will melt as the temperature of water reaches

0^{\circ}

is close to (in

g

)

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A small amount of ice is placed in water at 00C. It is observed that small amount of water freezes (i.e., amount of ice increases). Why?

The correct option is C As the ice must be at a sub-zero temperature and it absorbs heat when it is placed in water at 00CThe temperature of the ice must be lesser than 00C, only then it can absorb heat from water at 00C and convert some of it into ice.

A small amount of ice is placed in water at 0⁰C. It is observed that small amount of water freezes (i.e., amount of ice increases). Why?

The correct option is C
As the ice must be at a sub-zero temperature and it absorbs heat when it is placed in water at 0⁰C

The temperature of the ice must be lesser than 0⁰C, only then it can absorb heat from water at 0⁰C and convert some of it into ice.