Match Column - I and Column - II and choose the correct match from the given choices. Column - I; Column - II (A) Root mean square speed of gas molecules; (P) 1/3nmv^2 (B) Pressure exerted by ideal gas; (Q) √(3RT/M) (C) Average kinetic energy of a molecule; (R) 5/2RT (D) Total internal energy of 1 mole of a diatomic gas; (S) 3/2kBT

NEET UG 2021 · Physics · Question 27

NEET 2021 Physics, question 27

Question 27 of the NEET 2021 paper (code O1) is a Physics question from Kinetic Theory. Its idea, Degrees of Freedom and Internal Energy, was asked 3 times, in 2017, 2021 and 2026, across NEET 2017–2026. The NTA final answer key gives option 1.

Updated 2026-10-08

Q27 · Physics

\frac{1}{3}nm\bar{v}^{2}

Column - I	Column - II
(A) Root mean square speed of gas molecules	(P) $\frac{1}{3}nm\bar{v}^{2}$
(B) Pressure exerted by ideal gas	(Q) $\sqrt{\frac{3RT}{M}}$
(C) Average kinetic energy of a molecule	(R) $\frac{5}{2}RT$
(D) Total internal energy of 1 mole of a diatomic gas	(S) $\frac{3}{2}k_BT$

1 (A) - (Q), (B) - (P), (C) - (S), (D) - (R) Official answer 2 (A) - (R), (B) - (Q), (C) - (P), (D) - (S) 3 (A) - (R), (B) - (P), (C) - (S), (D) - (Q) 4 (A) - (Q), (B) - (R), (C) - (S), (D) - (P)

Official answer: option 1 · NTA final answer key

Same idea

Degrees of Freedom and Internal Energy, in other papers

NEET asked this idea 3 times, in 2017, 2021 and 2026. The other 2 questions below.

\mathrm{O_2}

Degrees of Freedom and Internal Energy: every question and how it was framed

The chapter

Kinetic Theory in ten years of NEET

14 questions from 2017–2026, asked in 10 of 10 papers, about 1.4 a paper. Kinetic Theory of Gases alone had 14.

Chapter analysis Study this chapter Practise this chapter

Degrees of Freedom and Internal Energy, in other papers

Kinetic Theory in ten years of NEET

Kinetic Theory: questions per paper