NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
हिंदी
State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · Question 118

Which law states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules?

  1. Graham's law
  2. Pascal's law
  3. Avogadro's law
  4. Coriolis effect
  5. None of the above / More than one of the above
Show answer & explanation

Answer: (C) Avogadro's law

Explanation

Avogadro's law (1811): V ∝ n at constant T and P.

  • (A) Incorrect

    Wrong: deals with diffusion rates.

  • (B) Incorrect

    Wrong: deals with pressure in fluids.

  • (C) Correct

    Correct: this is Avogadro's law.

  • (D) Incorrect

    Wrong: deflection due to Earth's rotation.

  • (E) Incorrect

    Wrong: only one of the options A–D is correct.