A body is at high temperature if its molecules are moving around at
high speed
low speed
same speed
Average speed
Which one of the following is not an inflammable substance?
LPG
Wood
Water
Paper
The process during which solid changes to liquid state is
Freezing
Boiling
Condensation
Fusion
100 °F = _____ °C
0 °C
100 °C
37.8 °C
54.7 °C
When two bodies at different temperatures are brought together in contact with each other, heat energy flows from:
cold body to the hot body
both of them
hot body to cold body
Heat is not transfered
At what temperature the celsius scale is equal to Fahrenheit scale?
-40 °C
-10 °C
Conversion of carbon dioxide into dry ice is an example of
Sublimation
Expansion
Solidification
A solid directly converts into gaseous state is called
The freezing point and boiling point of mercury is
-20°C, 350°C
39°C, 350°C
20°C,357°C
-39°C,357°C
Thermal radiations travel with the speed of
3 x 108
1.5 x 109
3 x 1019
15 x 1021