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in Class IX Science by (-12,634 points)

Write true or false for each statement

(a) The temperature of a substance remains unaffected during its change of state.

(b) Ice melts at 100°C.

(c) Water at 100°C has more heat than the steam at 100°C.

(d) Evaporation of a liquid causes cooling.

(e) Water evaporates only at 100°C.

(f) Boiling takes place at all temperatures.

(g) Evaporation takes place over the entire mass of the liquid.

(h) The process of a gas converting directly into solid is called vaporization.

(i) At high altitudes water boils above 100° C.

(j) The melting point of ice is 0°C.

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2 Answers

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by (-3,443 points)

(a) True.

(b) False. The ice melts at 0° by absorption of heat.

(c) False.

(d) True.

(e)  False.

(f) False.

(g) False.

(h) False.
The process of a liquid converting directly into gas is called vaporization.

(i) False.

(j) True.

0 votes
by Basic (28 points)
a ) False

b )  false

c) fakse

d) true

e) false

f )false

g) true

h) false

I) true

j) true

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