Ice floats on water because its density is ___ than that of water.

Who was the inventor of positron?

The normal value of acceleration due to gravity is___?

The normal value of acceleration due to gravity is

Entropy is the measurement of____?

Oxygen was discovered by

Cation formation is an____process?

Cation formation is an____?

Glass is made of the mixture of_____?

Glass is made of the mixture of?

The isotope of uranium capable of sustaining chain reactions is