All fuels have………….
a) hydal energy
b) chemical energy
c) potential energy
d) kinetic energy
It changes electrical energy to light energy.
a) electric drill
b) lamp
c) washing machine
d) radio
Scientist has developed such devices which change the form of energy is called energy…
a) inverter
b) converter
c) changer
d) all of these
A source of energy such as coal, oil, and natural gas is called……..energy source.
a) renewable
b) non-renewable
c) both a and b
d) none of these
The total energy in the universe is……..
a) constant
b) variable
c) very much
d) measurable
When we raise a brick up to some height, it possess………….
a) chemical energy
b) gravitational energy
c) nuclear energy
d) mechanical energy
