Stoichiometry and Stoichiometric Calculations is an important topic in the Chemistry section in MHT CET exam. Practising this topic will increase your score overall and make your conceptual grip on MHT CET exam stronger.
This article gives you a full set of MHT CET PYQs for Stoichiometry and Stoichiometric Calculations with explanations for effective preparation. Practice of MHT CET Chemistry PYQs including Stoichiometry and Stoichiometric Calculations questions regularly will improve accuracy, speed, and confidence in the MHT CET 2026 exam.
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MHT CET PYQs for Stoichiometry and Stoichiometric Calculations with Solutions
1.
Time required for completion of 90% of a first order reaction is ‘t’. What is the time required for completion of 99.9%of the reaction?
- t
- 2t
- 3t
- t/2
2.
How many molecules of carbon dioxide are formed when 0.6 g carbon is burnt in air?- 3.01 $\times$ 10$^{22}$
- 2.01 $\times$ 10$^{23}$
- 6.02 $\times$ 10$^{23}$
- 5.06 $\times$ 10$^{23}$
3.
In the reaction \( 2 \, \text{H}_2 + \text{O}_2 \rightarrow 2 \, \text{H}_2\text{O} \), how many moles of water are produced when 4 moles of hydrogen react with excess oxygen?- \( 2 \, \text{mol} \)
- \( 4 \, \text{mol} \)
- \( 6 \, \text{mol} \)
- \( 8 \, \text{mol} \)
4.
In the reaction 2Al(s) + 3Cl2(g) → 2AlCl3(s), if 4.0 g of aluminum reacts with 6.0 g of chlorine gas, what is the limiting reactant?
- \( \text{Al} \)
- \( \text{Cl}_2 \)
- \( \text{AlCl}_3 \)
- None
5.
What is the number of moles of oxygen atoms in 4.0 g of \( \text{O}_2 \)?- \( 0.125 \, \text{mol} \)
- \( 0.25 \, \text{mol} \)
- \( 0.5 \, \text{mol} \)
- \( 0.1 \, \text{mol} \)
6.
What volume of oxygen gas at STP is required to completely burn 12 g of methane (\( \text{CH}_4 \))? (Molar mass of \( \text{CH}_4 = 16 \, \text{g/mol} \), 1 mole of gas at STP occupies \( 22.4 \, \text{L} \)).- \( 11.2 \, \text{L} \)
- \( 22.4 \, \text{L} \)
- \( 33.6 \, \text{L} \)
- \( 44.8 \, \text{L} \)
7.
What is the mass of 0.5 moles of water (H$_2$O)?18g
9g
- 36g
- 45g
8.
How many grams of sodium chloride (NaCl) are produced when 2.0 moles of sodium (Na) react with excess chlorine gas (Cl\(_2\)? The balanced chemical equation for the reaction is: \[ 2 \, \text{Na} (s) + \text{Cl}_2 (g) \rightarrow 2 \, \text{NaCl} (s) \]- \( 116.9 \, \text{g} \)
- \( 58.5 \, \text{g} \)
- \( 117.0 \, \text{g} \)
- \( 231.5 \, \text{g} \)
9.
In the reaction \( 2\text{H}_2 + \text{O}_2 \rightarrow 2\text{H}_2\text{O} \), if 4 moles of hydrogen react with excess oxygen, how many moles of water are produced?- 2 moles
- 4 moles
- 8 moles
- 1 mole
10.
What is the volume of oxygen required for complete combustion of 0.25 mole of methane at S.T.P.?- 22.4 L
- 5.6 L
- 11.2 L
- 7.46 L
11.
In the reaction \( 2 \, \text{H}_2 + \text{O}_2 \to 2 \, \text{H}_2\text{O} \), if 4 moles of hydrogen react completely with oxygen, how many moles of water will be produced?- \( 2 \, \text{mol} \)
\( 8 \, \text{mol} \)
\( 4 \, \text{mol} \)
- \( 1 \, \text{mol} \)
12.
For the reaction N2(g) + 3H2(g) → 2NH3(g), the equilibrium constant Kc at a certain temperature is 1.5. If the concentration of N2 is 0.5 M, H2 is 1.0 M, and NH3 is 0.2 M, what is the reaction quotient Qc?
- \( 1.0 \)
- \( 1.5 \)
- \( 0.5 \)
- \( 2.0 \)
13.
What is the volume of oxygen required for complete combustion of 0.25 mole of methane at S.T.P.?- 22.4 L
- 5.6 L
- 11.2 L
- 7.46 L
14.
In the reaction \( \mathrm{2H_2 + O_2 \rightarrow 2H_2O} \), if 4 moles of hydrogen react completely with oxygen, how many moles of water will be produced?- 2 mol
- 4 mol
- 8 mol
- 1 mol
15.
What is the mass of sodium chloride (\( \text{NaCl} \)) formed when 0.5 moles of sodium (\( \text{Na} \)) reacts with excess chlorine (\( \text{Cl}_2 \))?\( 39 \, \text{g} \)
- \( 35.5 \, \text{g} \)
\( 29 \, \text{g} \)
- \( 70 \, \text{g} \)
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