List of top Chemistry Questions on Mole concept and Molar Masses asked in AIIMS

The normality of 10% $H_2SO_4$ solution having density 1.1 g/cc is

: Equal moles of different substances contain same number of constituent particles. : Equal weights of different substances contain the same number of constituent particles.

$138\, g$ of ethyl alcohol is mixed with $72\, g$ of water. The ratio of mole fraction of alcohol to water is

: One molar aqueous solution has always higher concentration than one molal. : The molality of a solution depends upon the density of the solution whereas molarity does not.

The number of molecules in $4.25\, g$ of ammonia is approximately