Geraniol, a volatile organic compound, is a component of rose oil. The density of the vapour is $0.46\ \mathrm{gL^{-1}}$ at $257^\circ\mathrm{C}$ and 100 mm Hg. The molar mass of geraniol is ____________ $\mathrm{g\ mol^{-1}}$. (Nearest Integer) [Given : $R = 0.082\ \mathrm{L\ atm\ K^{-1}\ mol^{-1}}$]

JEE Main 2022 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 29 June 2022, Shift 1, Chemistry Q81

Question 81 of 90 in this shift, Chemistry question 21 of 30, Section B.

Geraniol, a volatile organic compound, is a component of rose oil. The density of the vapour is

0.46\ \mathrm{gL^{-1}}

257^\circ\mathrm{C}

and 100 mm Hg. The molar mass of geraniol is ____________

\mathrm{g\ mol^{-1}}

. (Nearest Integer) [Given :

R = 0.082\ \mathrm{L\ atm\ K^{-1}\ mol^{-1}}

]

Official answer

152

NTA final key (2022 Session 1).

Chapter: States of Matter
Topic: Ideal Gas Laws
Idea tested: Gas Density and Molar Mass

Same topic in other shifts

All Ideal Gas Laws questions

4 Apr 2026, Shift 1 · Q35One gas of $n_1$ mole of molecules at temperature $T_1$ , volume $V_1$ , and pressure $P_1$ , and another gas of $n_2$ mole of molecules at…MediumSingle correct
6 Apr 2026, Shift 1 · Q35Two closed vessels of same volume are joined through a narrow tube and both vessels are filled with air of pressure 90 kPa and temperature…MediumSingle correct
3 Apr 2025, Shift 2 · Q34Pressure of an ideal gas, contained in a closed vessel, is increased by 0.4% when heated by $1^\circ$ C. Its initial temperature must be:MediumSingle correct
4 Apr 2025, Shift 2 · Q45There are two vessels filled with an ideal gas where volume of one is double the volume of other. The large vessel contains the gas at 8…MediumSingle correct
7 Apr 2025, Shift 1 · Q51At the sea level, the dry air mass percentage composition is given as nitrogen gas: 70.0, oxygen gas: 27.0 and argon gas: 3.0. If total…MediumSingle correct
25 Jul 2022, Shift 1 · Q83The pressure of a moist gas at $27^\circ$ C is $4$ atm. The volume of the container is doubled at the same temperature. The new pressure of…MediumNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.