AIIMS 2019 Chemistry Vapor Density Assertion Reason Question

The assertion is false because the molecular weight (M) of a compound is actually equal to twice its vapor density (VD) when expressed in the same units, as per the formula $M = 2 \times VD$. Therefore, the statement that molecular weight is twice the vapor density is incorrect. The reason is true because vapor density is defined as the mass of a certain volume of gas compared to the mass of an equal volume of hydrogen at the same temperature and pressure, highlighting the relationship between molecular weight and vapor density. Options (A) and (B) are incorrect because they incorrectly classify the truth values of the assertion and reason, while option (D) is incorrect as it states both are false.