If 8 workers finish in 10 days, 4 workers take:

CNG is preferred as fuel because it is:

Which part of the plant conducts water?

Earthquake is measured on the:

Plastics are generally:

Blood is purified in:

Which metal is liquid at room temperature?

The process of conversion of water vapour into liquid is:

Which is a communicable disease?

Speed of light is maximum in:

Rusting of iron requires: