The unit of pressure is
Newton
Joule
Pascal
Hertz
At equilibrium, there is
Greater moment
Less moment
No net moment
Cannot predict
A mixture of methane and carbon dioxide gas is
Fossil fuel
Biogas
Natural gas
All the above
Frictional force has maximum value when
A body starts to move
A body is sliding over another body
A body has maximum temperature
A body has minimum temperature
A device which can turn about a point is called
Beam
Lever
Load
Effort
The force which opposes one surface moving over another is
Moment
Pull
Push
Friction
Which of the following is needed to enable people, computers, machines and other devices to do work ?
Work done
Energy
Energy transfer
Power
The force acting on unit area is called
Pressure
The energy possessed by a body by virtue of its motion is called
Potential energy
Kinetic energy
Solar energy
Chemical energy
In solar energy, which device is used to transfer energy ?
Solar furnace
Solar panels
Solar cells
Solar power
