0.24g of volatile liquid upon vaporisation gives 45ml of vapour at NTP .what will be the vapour density of the substance

1. 95.39
2. 5.993
3. 95.93
4. 59.93
5. 19.93

we know that

Vapor Density = mass of certain volume of vapor / mass of same volume of H₂

so,

V.D. = Mass of 1L of vapor / Mass of 1L of H₂

here

mass of 1L of vapor = 0.24 x 1000 kg

mass of 1L of H₂ = volume x density = 45 x 0.089 kg

thus,

V.D. =  0.24 x 1000 / 45 x 0.089

so,

V.D. = 59.93

so. correct answer is option (d).