List of top Chemistry Questions on Stoichiometry and Stoichiometric Calculations asked in COMEDK UGET

For a reaction $ 5X + Y \to 3Z $, the rate of formation of Z is $ 2.4 \times 10^{-5} \, \text{mol L}^{-1} \text{s}^{-1} $. Calculate the average rate of disappearance of X.
15 g of $ \text{CaCO}_3 $ completely reacts with
The mass of oxygen gas which occupies $5.6$ litres at STP would be