question_answer

The maximum number of molecules is present in:                                                    [AIPMT (S) 2004]

A)  \[15\,L\] of \[{{H}_{2}}\] gas at STP

B)       \[5\,L\] of \[{{N}_{2}}\] gas at STP

C)  0.5 g of \[{{H}_{2}}\] gas

D)       10 g of \[{{O}_{2}}\]

Correct Answer: A

Solution :

In 15 L of Ha gas at STP, the number of molecules

In of gas at STP

In of gas

In ofgas

Hence, maximum molecules are present in

ofat STP.