The volume of water to be added to $100c{m}^{3}100\; \backslash ,cm^3$ of 0.5N $H_{2}S{O}_{4}H\_2SO\_4$ to get decinormal concentration is

The mass of 70% $H_{2}S{O}_{4}H\_2SO\_4$ required for neutralization of 1 mol of NaOH is

If LPG cylinder contains a mixture of butane and isobutane, then the amount of oxygen that would be required for combustion of 1kg of it will be

12L of $H_{2}H\_2$ and 11.2 litres of $C{l}_{2}Cl\_2$ are mixed and exploded. The composition by volume of mixture is

If potassium chlorate is 80% pure, then 48g of oxygen would be produced from (atomic mass of K = 30)

The mass of oxygen that would be required to produce enough CO which completely reduces 1.6 kg $F{e}_2{O}_{3}Fe\_2O\_3$(at. mass Fe = 56) is

2.76g of silver carbonate on being strongly heated yields a residue weighing

Minimum volume of $S{O}_{2}SO\_2$ gas at N.T.P. which reduces 100 mL of 0.1N $K_{2}C{r}_2{O}_{7}K\_2Cr\_2O\_7$ is

In Haber process, gaseous nitrogen and hydrogen react to form ammonia whose volume as compared to that of reactants (N.T.P.) would be :

4.35 g of a sample of pyrolusite ($Mn{O}_{2}MnO\_2$) when heated with conc. HCI gave chlorine. The chlorine when passed through potassium iodide solution liberated 6.35g of iodine. The percentage purity of the pyrolusite sample is