The JEE Main Physics section requires speed and accuracy, along with a thorough understanding of the Gas laws. This article provides a set of JEE Main PYQs on Gas laws to help you understand the topic and improve your problem-solving skills with the help of detailed solutions by ensuring conceptual clarity, which will help you in the JEE Main 2026 preparation.
Whether you're revising the basics or testing your knowledge, these JEE Main PYQs will serve as a valuable practice resource.
The JEE Main 2026 exam is likely to continue on the same pattern as JEE Main 2025. Out of 90 questions, students can expect a fair mix from all three subjects. To get an edge, going through JEE Main previous year questions (PYQs) is one of the best strategies.
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JEE Main PYQs on Gas laws
1.
The mass of magnesium required to produce 220 mL of hydrogen gas at STP on reaction with excess of dilute HCl is: (Given molar mass of Mg = 24 g/mol)- 0.44 g
- 0.22 g
- 0.88 g
- 1.32 g
2.
Match List I with List II.Choose the correct answer from the options given below:List I (Anion) List II (gas evolved on reaction with dil \(H_2SO_4\)) A. \(CO_3^{ 2−}\) I. Colourless gas which turns lead acetate paper black. B. \(S^{2–}\) II. Colourless gas which turns acidified potassium dichromate solution green C. \(SO_3^{ 2−}\) III. Brown fumes which turns acidified KI solution containing starch blue. D. \(NO_2^{−}\) IV. Colourless gas evolved with brisk effervescence, which turns lime water milky. - A-III, B-I, C-II, D-IV
- A-II, B-I, C-IV, D-III
- A-IV, B-I, C-III, D-II
- A-IV, B-I, C-II, D-III
3.
Amount of magnesium (Mg) (in mg) required to liberate 224 mL of \( H_2 \) gas at STP, when reacted with HCl.- 20
- 10
- 15
- 5
4.
Match List I with List II:Choose the correct answer from the options given below:List I
List II
A 16 g of CH4 (g) I Weight 28g B 1 g of H2 (g) II 60.2 × 1023 electrons C 1 mole of N2 (g) III Weighs 32 g D 0.5 mol of SO2 (g) IV Occupies 11.4 L volume at STP - A-II, B-IV, C-III, D-I
- A-I, B-III, C-II, D-IV
- A-II, B-IV, C-I, D-III
- A-II, B-III, C-IV, D-I
5.
Statement 1: Hyper conjugation is not a permanent effect Statement 2: In general, greater the number of Alkyl groups attached to a positively charged carbon atom, greater is the Hyper conjugation interaction and stabilization of the cation.- Statement 1 and Statement 2 are correct
- Statement 1 and Statement 2 are incorrect
- Statement 1 is true and Statement 2 is false
- Statement 1 is false and Statement 2 is true
6.
Which amongst the given plots is the correct plot for pressure \((p)\) vs density \((d)\) for an ideal gas?7.
At 715 mm pressure, 300 K, volume of N\(_2\) (g) evolved was 80 mL by a 0.4 g sample of organic compound. Find the percentage of N in the organic compound. Given aqueous tension at 300 K = 15 mm.- 20.95
- 25.85
- 30.25
- 15.83
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