Indian Navy AA (Artificer Apprentice) Kinetic Theory of Gases — practice questions

Explore 2 free Kinetic Theory of Gases questions in Indian Navy AA (Artificer Apprentice) Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Kinetic Theory of Gases questions and exercises with answers

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Postulate of kinetic theory: gas molecules:Read the answer and worked solution →Boyle's law derivation from KTG: at constant T, doubling V causes:Read the answer and worked solution →

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Postulate of kinetic theory: gas molecules:

Have fixed positions
Are in random rapid motion; collisions are elastic
Are stationary
Stick together

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Correct answer: B. Are in random rapid motion; collisions are elastic

KTG postulates: (i) large number of identical molecules in random motion (ii) elastic collisions (KE conserved) (iii) negligible molecular volume (iv) no inter-molecular forces (except during brief collisions).

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Boyle's law derivation from KTG: at constant T, doubling V causes:

P unchanged
P halves (P ∝ 1/V from PV = nRT at const T)
P × 4
P doubles

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Correct answer: B. P halves (P ∝ 1/V from PV = nRT at const T)

PV = nRT. **At const T:** P ∝ 1/V. Doubling V halves P. From KTG: doubling V at const T = same N molecules in 2× volume → half the collision rate → half pressure.