19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The number of grams of \(\mathrm{H_2SO_4}\) present in 0.25 mole of \(\mathrm{H_2SO_4}\) is
Which of the following has the smallest number of molecules?
The number of atoms in 1.4 g nitrogen gas is:
1.0 mole of \(\mathrm{CO_2}\) contains:
The weight of a molecule of the compound \(\mathrm{C_60H_122}\) is
7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is
Two containers P and Q of equal volume (1 litre each) contain \(\mathrm{O_2}\) and \(\mathrm{SO_2}\) respectively at 300 K and 1 atmosphere. Then
The chemical formula of a particular compound represents:
The best standard of atomic mass is: