Some Basic Concepts of Chemistry Quiz-8

The volume of water to be added to $100 \,cm^3$ of 0.5N $H_2SO_4$ to get decinormal concentration is

The mass of 70% $H_2SO_4$ 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 $H_2$ and 11.2 litres of $Cl_2$ 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 $Fe_2O_3$(at. mass Fe = 56) is

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

Minimum volume of $SO_2$ gas at N.T.P. which reduces 100 mL of 0.1N $K_2Cr_2O_7$ 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 ($MnO_2$) 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