Class 10 | Heat

Flash Card

SI unit of specific heat capacity is

1/50

.................. heat is necessary to raise 1 kg of water from 14.5 °C to 15.5 °C.

2/50

Water is heated from 0 °C to 10 °C, then it volume

3/50

Water expands on reducing its temperature below ............°C.

4/50

If a substance expands on solidifying, then application of pressure ............ .

5/50

Latent heat per unit mass of a substance is its.............. .

6/50

Relative humidity of air at dew point is ......... .

7/50

The air is said to be unsaturated if vapour contained in a given volume of air at a temperature

8/50

When latent heat of phase transformation from solid to gaseous state is studied for ice, for temperature range of 20 °C to 80 °C, graph of temperature versus time is

9/50

The moisture in the atmosphere is called

10/50

Absolute humidity is measured in ............ .

11/50

The amount of heat energy absorbed at constant temperature by unit mass of a solid to convert into liquid phase is called the ............. .

12/50

When boiling point of water is reached,

13/50

Relative humidity has no units because ............ .

14/50

Which of the following is not a unit of heat?

15/50

If two ice cubes are pressed against each other. they stick together firmly after some time because ............. .

16/50

When latent heat is released or given off from a substance, it results into ............ .

17/50

While deciding the unit for heat, temperature interval chosen is

18/50

Latent heat of fusion is 80 cal/g. How much wit it be in kJ/kg?

19/50

In cold countries in winter, water carrying pipes sometimes break, because

20/50

Heat energy absorbed by water at 100 °C during transformation into steam is called its

21/50

Which of the following substances has negative melting point?

22/50

If objects of equal masses are given equal heat, their final temperature will be different. This is due to difference in their ............ .

23/50

Tiny drops on window pane of car at dawn in winter indicates ............... temperature is attained.

24/50

The constant temperature at which liquid converts into gas is called its ............

25/50

When ice of 0 °C is heated to convert into steam, for what values of temperature thermometer dipped into ice shows constant reading for some time?

26/50

When air is saturated with vapour, .................. vapour condenses on the surface of objects in the form of water droplets

27/50

During transformation of liquid phase to solid phase, the latent heat is ............. .

28/50

When the air contains maximum possible water vapour, it is said to be ................. with vapour at that temperature.

29/50

From the options given below, the specific heat of ................... is maximum.

30/50

Hot liquids get cooled faster .............. .

31/50

In temperature range of o "C to 4 °C, at ......... volume of water is maximum due to expansion.

32/50

Heat is liberated when ............ .

33/50

In Hope's apparatus, while studying anomalous behavior of water, water with higher temperature ........ .

34/50

Latent heat is evolved during the transformation of liquids into solids." How will you explain this statement?

35/50

Due to constant ................ of water, water vapour is always present in the atmosphere.

36/50

While heating ice and water mixture, it is stirred continuously.

37/50

Fomenting bottles are used with hot water because

38/50

In the experiment to study the effect of heat on ice, what will be the maximum rise in temperature of water?

39/50

By studying anomalous behavior of water using Hope's apparatus, it is concluded that

40/50

Small white trail in sky behind back of flying aeroplane indicates

41/50

With increased height from sea level, melting point of solids which expand on solidifying .......... .

42/50

Choose the correct option:

43/50

3.5 kcal = ............. .

44/50

The amount of heat energy to be supplied to convert 2 kg of ice at 0°C completely into water at 0 °C if latent heat of fusion for ice is 80 cal/g is........ .

45/50

The vapour content in the air is measured using a physical quantity called .......... .

46/50

The increase in temperature of water above its boiling point in the pressure cooker is due to change in .............. .

47/50

The amount of heat necessary to raise the temperature of 1 g of water by 1 °C from 14.5 °C to 15.5 °C is called

48/50

An example observed as a consequence of attaining the dew-point temperature is

49/50

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

50/50
Heat

Class 10 | Heat

1 / 50

Which of the following substances has negative melting point?

2 / 50

The air is said to be unsaturated if vapour contained in a given volume of air at a temperature

3 / 50

In Hope’s apparatus, while studying anomalous behavior of water, water with higher temperature …….. .

4 / 50

When boiling point of water is reached,

5 / 50

The amount of heat necessary to raise the temperature of 1 g of water by 1 °C from 14.5 °C to 15.5 °C is called

6 / 50

Heat energy absorbed by water at 100 °C during transformation into steam is called its

7 / 50

Latent heat is evolved during the transformation of liquids into solids.” How will you explain this statement?

8 / 50

Relative humidity has no units because ………… .

9 / 50

Latent heat per unit mass of a substance is its………….. .

10 / 50

With increased height from sea level, melting point of solids which expand on solidifying ………. .

11 / 50

In temperature range of o “C to 4 °C, at ……… volume of water is maximum due to expansion.

12 / 50

While heating ice and water mixture, it is stirred continuously.

13 / 50

When latent heat of phase transformation from solid to gaseous state is studied for ice, for temperature range of 20 °C to 80 °C, graph of temperature versus time is

14 / 50

SI unit of specific heat capacity is

15 / 50

While deciding the unit for heat, temperature interval chosen is

16 / 50

3.5 kcal = …………. .

17 / 50

During transformation of liquid phase to solid phase, the latent heat is …………. .

18 / 50

The vapour content in the air is measured using a physical quantity called ………. .

19 / 50

If objects of equal masses are given equal heat, their final temperature will be different. This is due to difference in their ………… .

20 / 50

Water is heated from 0 °C to 10 °C, then it volume

21 / 50

When the air contains maximum possible water vapour, it is said to be …………….. with vapour at that temperature.

22 / 50

If a substance expands on solidifying, then application of pressure ………… .

23 / 50

Due to constant ……………. of water, water vapour is always present in the atmosphere.

24 / 50

……………… heat is necessary to raise 1 kg of water from 14.5 °C to 15.5 °C.

25 / 50

Choose the correct option:

26 / 50

Latent heat of fusion is 80 cal/g. How much wit it be in kJ/kg?

27 / 50

Fomenting bottles are used with hot water because

28 / 50

Tiny drops on window pane of car at dawn in winter indicates …………… temperature is attained.

29 / 50

The constant temperature at which liquid converts into gas is called its …………

30 / 50

The increase in temperature of water above its boiling point in the pressure cooker is due to change in ………….. .

31 / 50

When latent heat is released or given off from a substance, it results into ………… .

32 / 50

The amount of heat energy to be supplied to convert 2 kg of ice at 0°C completely into water at 0 °C if latent heat of fusion for ice is 80 cal/g is…….. .

33 / 50

When water in the ice trays in a refrigerator freezes to form ice ………. .

34 / 50

By studying anomalous behavior of water using Hope’s apparatus, it is concluded that

35 / 50

The amount of heat energy absorbed at constant temperature by unit mass of a solid to convert into liquid phase is called the …………. .

36 / 50

Which of the following is not a unit of heat?

37 / 50

Heat is liberated when ………… .

38 / 50

In the experiment to study the effect of heat on ice, what will be the maximum rise in temperature of water?

39 / 50

If two ice cubes are pressed against each other. they stick together firmly after some time because …………. .

40 / 50

Hot liquids get cooled faster ………….. .

41 / 50

Absolute humidity is measured in ………… .

42 / 50

From the options given below, the specific heat of ………………. is maximum.

43 / 50

The moisture in the atmosphere is called

44 / 50

In cold countries in winter, water carrying pipes sometimes break, because

45 / 50

Relative humidity of air at dew point is ……… .

46 / 50

When air is saturated with vapour, ……………… vapour condenses on the surface of objects in the form of water droplets

47 / 50

When ice of 0 °C is heated to convert into steam, for what values of temperature thermometer dipped into ice shows constant reading for some time?

48 / 50

Small white trail in sky behind back of flying aeroplane indicates

49 / 50

An example observed as a consequence of attaining the dew-point temperature is

50 / 50

Water expands on reducing its temperature below …………°C.

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