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If there is no loss of heat, the heat released by the condensation of $x$ gram of steam at $100 ° C$ into water at $100 ° C$ can be used to convert $y$ gram of ice at $0 ° C$ into water at $100 ° C$ . Then the ratio $y : x$ is nearly

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Important Questions on Calorimetry and Change of State

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 25

Steam at

100 ° C

is passed into

1.1 kg

of water contained in a calorimeter of water equivalent

0.02 kg

15 ° C

till the temperature of the calorimeter rises to

80 ° C

. The mass of steam condensed is

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 26

The temperature of equal masses of three different liquids

A, B

and

C

are mixed in

12 ° C, 19 ° C

and

28 ° C

respectively. The temperature when

A

and

B

are mixed is

16 ° C

and when

B

and

C

are mixed is

23 ° C

. The temperature when

A

and

C

are mixed is

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IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 27

A piece of ice (

sp

. Heat capacity

= 2100

And latent heat

= 3.36 \times 10^{5}

) of mass

m gm

Is at temperature at atmospheric pressure. It is given

420 J

Of heat so that the ice starts melting. Finally, when the ice-water mixture is in equilibrium, it is found that

1 g

Of ice has melted. Assuming there is no other heat exchange in the process, the value of

m

Is ?

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A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 28

2 kg

of ice at

20 ° C

is mixed with

5 kg

of water at

20 ° C

in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice are

1 k cal / kg ° C

and

0.5 k cal / kg ° C

while the latent heat of fusion of ice is

80 k cal / kg

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IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 29

When the room temperature becomes equal to the dew point, the relative humidity of the room is

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IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 30

An experiment takes

10

minutes to raise the temperature of water from

0 ° C

100 ° C

and another

55

minutes to convert it totally into steam by stabilised heater. The latent heat of vapourisation comes out to be

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 31

The specific heat

c

of a solid at low temperature shows temperature dependence according to the relation

c = D T^{3}

where

D

is a constant and

T

is the temperature in Kelvin. A piece of this solid of mass

m kg

is taken and its temperature is raised from

20 K

30 K

. The amount of heat required in the process is energy unit is

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11th West Bengal Board

IMPORTANT

A Text Book of PHYSICS PART I : CLASS 11>Chapter 17 - Calorimetry and Change of State>EXERCISE>Q 32

122320 cal

of heat is supplied to

100 g

of ice at

0 ° C

. If the latent heat of fusion of ice is

80 cal / g

and latent heat of vaporization of water is

540 cal / g

, the final amount of water thus obtained and its temperature respectively are

If there is no loss of heat, the heat released by the condensation of x gram of steam at 100°C into water at 100°C can be used to convert y gram of ice at 0°C into water at 100°C. Then the ratio y:x is nearly

Important Questions on Calorimetry and Change of State

Learn and Prepare for any exam you want !

If there is no loss of heat, the heat released by the condensation of $x$ gram of steam at $100 ° C$ into water at $100 ° C$ can be used to convert $y$ gram of ice at $0 ° C$ into water at $100 ° C$ . Then the ratio $y : x$ is nearly