MHT CET Chemistry question
A gas is found to have the formula . Its VD is 70. The value of must be:
Answer: (C)
Solution
Molecular mass = 2 × VD = 140 and 28x = 140, so x = 5; x = 7, 4 and 6 would give 196, 112 and 168. Hence the correct option is (c).