  Question

Assertion:  Vapour density of sulphur vapour relative to oxygen is 2 because sulphur atom is twice as heavy as that of oxygen atom. Reason: Vapour density depends upon the molecular state of the substance in vapour state.

A
If both (A) and (R) are correct and (R) is the correct explanation of (A).  B
If both (A) and (R) are correct but (R) is not the correct explanation of (A).  C
If (A) is correct but (R) is wrong.  D
If (A) is wrong but (R) is correct.  E
If both (A) and (R) are wrong.  Solution

The correct option is B If (A) is correct but (R) is wrong.$$\begin{array}{l}\text { Molecular weight of oxygen }=32 \\\text { Molecular weight of Sulphur }=64 \\\text { Vapour density of Sulphur }=2 \times(\text { V.D of oxygen })\end{array}$$$$\begin{array}{l}\text { Vapour density depends on Molar mass but not on molecular state } \\\text { Hence Assertion is true but reason is wrong. }\end{array}$$Chemistry

Suggest Corrections  0  Similar questions
View More  People also searched for
View More 