Question

i) Name the unit in which heat liberated by a fuel is measured. ii) State SI unit of pressure

Answer 1

i) Kilojoule 
ii) Pascal

Answer 2

Kilojoule

One thousand (1000) joules is equal to one kilojoule. Most of the countries expresses energy in kilojoules in the foods containing labels.

One square metre of the Earth receives about 1.4 kilojoules of solar radiation per one square metre per second in complete daylight.

Pressure

The derived unit of pressure is obtained from the effect of a force applied to a surface by combining the base units. The SI unit of pressure is the pascal (Pa), known as the force of one Newton per squaremeter. The conversion between atm, Pa and torr.

1 atm = 101325 Pa = 760 torr