Gas Laws and Ideal Gas Equation MCQs

Prepare for Gas Laws and Ideal Gas Equation MCQs with verified questions, past-paper solutions, and conceptual explanations for CSS, PMS, FPSC, PPSC, and NTS examinations.

196 Solved Questions • 147 Mins Practice • Updated for 2026 Competitive Exams
MCQS
2026 Solved Edition · Updated October 2026 · Verified Editorial Standards

Welcome to the verified preparation module for Heat & Thermodynamics on McqsMind. This comprehensive set offers solved multiple-choice questions with answers, detailed explanations, and authentic past-paper style questions aligned with the latest syllabus of Heat & Thermodynamics (Physics).

100% Verified Answer Keys CSS, PMS, FPSC, PPSC, NTS Ready 2026/2027 Syllabus Guidelines

Direct Definition & Conceptual Scope

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Gas Laws and Ideal Gas Equation constitutes an essential examination topic within Physics, evaluating theoretical principles, historical context, and practical problem-solving applications. On MCQsMind, candidates practice verified past-paper solutions, conceptual breakdowns, and syllabus-aligned questions tailored for CSS, PMS, and competitive screening examinations.

Solved Questions

Practice with answers, explanations, and exam-focused revision notes.

196 MCQs Page 8

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71
The gas temperature is increased from 27 ℃ to 127 ℃. What is the ratio of mean kinetic energies?
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72
An assembly of smoke particles in air at NTP is under consideration. If the mass of each particle is 5 × 10⁻¹⁷ kg, then the r.m.s. speed is (k = 1.38 × 10⁻²³ J K⁻¹):
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73
For a gas obeying Boyle's law, if the pressure is doubled the volume becomes:
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74
In the equation pV = RT, V stands for the volume of
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75
The pressure necessary to liquify a gas at the critical temperature is called
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76
118. If the r.m.s. velocity of oxygen molecules at a certain temperature is 0.5 km/s, the r.m.s. velocity for hydrogen molecules at the same temperature will be
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77
82. A vessel has 6 gm of hydrogen at pressure P and temperature 500 K. A small hole is made in it so that hydrogen leaks out. How much hydrogen leaks out if the final pressure is P/2 and temperature falls to 300 K?
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78
If a gas is heated at constant pressure its isothermal compressibility
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80
A flask is filled with 4 g of a gas at 12°C and then heated to 50°C. Owing to the escape of the gas, the pressure in the flask is the same at the beginning as well as the end of the experiment. Then the mass of the gas that has escaped is nearly
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Pedagogical Syllabus Blueprint

Gas Laws and Ideal Gas Equation MCQs: Preparation Strategy & Exam Blueprint

Examination Weightage & Commission Distribution

In Pakistan's premier competitive examinations—including the Federal Public Service Commission (FPSC General Recruitment & CSS MPT), Punjab Public Service Commission (PPSC Lecturer, Tehsildar & PMS Screening), KPPSC, SPSC, and BPSC—questions derived from Gas Laws and Ideal Gas Equation MCQs consistently constitute a decisive 10% to 25% weightage of the Heat & Thermodynamics paper. Testing agencies frequently evaluate both foundational factual recall and deeper analytical comprehension, requiring aspirants to master key dates, statutory articles, constitutional clauses, and thematic definitions.

High-Yield Conceptual Pillars & Distractor Analysis

Historical trend analysis across past five-year examination cycles demonstrates that examiner traps frequently involve closely matched numerical alternatives, chronologically contiguous treaties, and semantic subtleties in statutory phraseology. When preparing Gas Laws and Ideal Gas Equation MCQs, candidates must deliberately review the underlying rationale provided for every question rather than merely memorizing raw answer options. Understanding why incorrect distractors fail is the most reliable predictor of achieving top percentiles in computerized and optical mark recognition (OMR) screening tests.

Negative Marking Mitigation & Time Management Protocol

For examinations enforcing negative marking penalties (such as PPSC's 0.25-mark deduction per erroneous response or NTS gatekeeper quotas), an aggressive elimination technique must be deployed. Candidates should systematically rule out improbable options first to elevate probability thresholds from 25% to 50% or 100%. Allocating an average of 45 to 60 seconds per item during mock trials builds the psychological stamina and cognitive precision required to complete 100-question papers within official 90-minute time limits.

Recommended Reference Sources & Statutory Reading

To achieve definitive conceptual mastery in Physics, candidates are advised to cross-reference our solved explanations with primary gazettes, statutory texts, and canonical academic textbooks. Verifying controversial questions against authentic official repositories guarantees that prospective civil servants and professional candidates present incontestable answers during both optical paper evaluations and viva voce departmental interviews.