Physical Chemistry MCQ with Answers

Physical Chemistry MCQ with Answers

36) Calculate the volume of O₂ and volume of air needed for combustion of 1 kg carbon at STP:

Answer is:

9333.25 L

37) 1.5 gm of CdCl₂ was found to contain 0.9 gm Cd. Calculate the atomic weight of Cd:

Answer is:

106.5

38) How many mL of perhydrol is required to produce sufficient oxygen which can be used to completely convert 2 L of SO₂ gas to SO₃ gas?

Answer is:

10 mL

39) Oxidation number of sulphur in Na₂S₂O₃ is:

Answer is:

−2

Explanation:

For coordinated, S(−2)

40) Equivalent weight of KMnO₄ in alkaline medium is equal to: (M = molar mass)

Answer is:

M

Explanation:

In alkaline medium, MnO₄⁻ → MnO₄²⁻

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