NEET Chemistry Some Basic Concepts in Chemistry Stoichiometric Calculations MCQs

A mixture of $KClO_3$ and $KCl$ weighing 4.96 g was heated to produce $O_2$. The evolved oxygen occupied 448 mL at STP. What percent of the original mixture was $KClO_3$?

A 10g sample of $CaC{O_3}$ with 80% purity was heated to a constant weight volume of $C{O_2}$ gas liberated under STP conditions is approximately

In an experiment during the analysis of a carbon compound, $145\,\,{\rm{mL of}}\,\,{{\rm{H}}_2}$ was collected at $760\,\,{\rm{mm Hg}}$ pressure and ${27^0}C$. The weight of ${H_2}$ is nearly :

Volume of $C{O_2}$ produced on heating 10 g of limestone at S.T.P

The volume of ${O_2}$ at STP required for the complete combustion of 4g $C{H_4}$ is

0.9 g Al reacts with dil. $HCl$ to give ${H_2}$ . The volume of ${H_2}$ evolved at STP is

From the equation, $3{{\rm{C}}_2}{{\rm{H}}_2} o {{\rm{C}}_6}{{\rm{H}}_6},$ find the volume of acetylene (NTP) for the manufacture of 3 mole of benzene: