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
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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.

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

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196 MCQs Page 17

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161
In an ideal gas, the molecules have:
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162
It is required to double the pressure of a gas in a container at 27°C by heating it. To what temperature should the gas be raised?
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163
The total KE of all the molecules of helium having a volume V exerting a pressure p is 1500 J. The total KE in joule of all the molecules of N2 having the same volume V and exerting a pressure 2p is
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165
If N denotes the total number of molecules in a cubic vessel such that m is mass of each molecule and l is length of each side of vessel, then mN/l^3 gives the:
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166
An ideal gas at 27°C is compressed adiabatically to 8/27 of its original volume (TV^{γ-1} = constant and γ = 5/3). Then the rise in temperature is
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167
Which of the following properties of molecules of a gas is same for all gases at a particular temperature?
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168
The temperature of an ideal gas enclosed in a chamber is raised from 300 K to 600 K. The pressure becomes twofold because the:
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169
102. A box contains N molecules of an ideal gas at absolute temperature T and pressure p. The number of molecules in the box is doubled keeping the total kinetic energy of the gas the same as before. If the new pressure is p' and temperature T', then
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170
If the number of gas molecules in a cubical vessel is increased from N to 3N, then its pressure and total energy will be
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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.