The diffusion of gases at absolute zero will be?

What do we call to sudden expansion of plasma?
 

At constant temperature the pressure of an ideal gas is doubled its density becomes?

What is the abundant form of matter on earth?
 

Which state of matter has the lowest density?
 .

Critical temperature for different gases is different and depends upon?

What is the simplest form of matter?

Which of the following option is incorrect about gases?
 .

0.5 mole of nitrogen gas and 0.5 mole of carbon monoxide gas at STP have same?

In how many forms do matter exists?