Q9 / 160 · TS EAMCET 2020 (10 Sep Shift 2) · Chemistry

Identify the law for which the following statement is true. "Equal volume of all gases at same temperature and pressure should contain equal number of molecules".

  • A
    Gay Lussac's law
  • Correct answer
    B
    Avogadro's law
  • C
    Law of multiple proportion
  • D
    Law of conservation of mass

Solution

The given statement is 'Avogadro's law', because according to Avogadro's law. 'Equal volume of all gases under similar conditions of temperature and pressure contain equal number of molecules', i.e. volume of gas $(V) \propto N$ (number of molecules) or $V \propto n$ (number of moles) [at constant temperature and pressure]

Hence, the correct answer is option: 'B'.

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