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Choose the correct alternative and rewrite statement. Chapter No. 5. Heat

Choose the correct alternative and rewrite statement.
Chapter No. 5. Heat

When ice of 00 C is heated to convert into steam, for what values of temperature, thermometer dipped into ice shows constant reading for some time?

A. 00 C to 40 C
B. 40 C to 1000 C
C. 00 C to 1000 C
D. 00 C, 40 C and 100 0 C.

Heat energy absorbed by water at 1000 C during transformation into steam is called its _________

A. latent heat of melting.
B. latent heat of fusion
C. latent heat of steaming
D. latent heat of vaporization

When water in the ice trays in a refrigerator freezes to form ice _________________

A.  heat is given out and temperature decreases.
B. heat is given out and temperature increases
C. heat is given out and temperature is maintained.
D. its volume decreases.

An ice cream vendor from street is seen to be removing the water from the freezing mixture from time to time. The action proves helpful in ___________

A. maintaining the temperature of freezing mixture
B. increasing the temperature of freezing mixture.
C. decreasing the temperature of freezing mixture
D. maintaining dew point temperature.

An ice cream vendor from street is seen to be removing the water from the freezing mixture from time to time. The action proves helpful in _______

A. maintaining the temperature of freezing mixture.
B. increasing the temperature of freezing mixture.
C. decreasing the temperature of freezing mixture.
D. maintaining dew point temperature.

The moisture in the atmosphere is called _________

A. humidity
B. pressure
C. radiation of heat
D. anomalous behaviour of water

To cool hot liquid quickly it should be _________

A. placed inside the house in summer
B. placed inside the house in the winter
C. placed in the open in the summer
D. placed in the open in winter

Answers:

Chapter No. 5. Heat

When ice of 00 C is heated to convert into steam, for what values of temperature, thermometer dipped into ice shows constant reading for some time?

A. 00 C to 40 C
B. 40 C to 1000 C
C. 00 C to 1000 C
D. 00 C, 40 C and 100 0 C.

Heat energy absorbed by water at 1000 C during transformation into steam is called its _________

A. latent heat of melting.
B. latent heat of fusion
C. latent heat of steaming
D. latent heat of vaporization

When water in the ice trays in a refrigerator freezes to form ice _________________

A.  heat is given out and temperature decreases.
B. heat is given out and temperature increases
C. heat is given out and temperature is maintained.
D. its volume decreases.

An ice cream vendor from street is seen to be removing the water from the freezing mixture from time to time. The action proves helpful in ___________

A. maintaining the temperature of freezing mixture
B. increasing the temperature of freezing mixture.
C. decreasing the temperature of freezing mixture
D. maintaining dew point temperature.

The moisture in the atmosphere is called _________

A. humidity
B. pressure
C. radiation of heat
D. anomalous behaviour of water

To cool hot liquid quickly it should be _________

A. placed inside the house in summer
B. placed inside the house in the winter
C. placed in the open in the summer



D. placed in the open in winter