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Friday, 9 October

JEE Main 2022 · ChemistryMultiple choiceSingle correctMediumCalculation

JEE Main 24 June 2022, Shift 1, Chemistry Q61

Question 61 of 90 in this shift, Chemistry question 1 of 30, Section A.

If a rocket runs on a fuel (C15H30\mathrm{C_{15}H_{30}}) and liquid oxygen, the weight of oxygen required and CO2\mathrm{CO_2} released for every litre of fuel respectively are : (Given : density of the fuel is 0.756 g/mL)
  1. (1)1188 g and 1296 g
  2. (2)2376 g and 2592 g
  3. (3)2592 g and 2376 gOfficial answer
  4. (4)3429 g and 3142 g

Official answer

Option 3

NTA final key (2022 Session 1).

Chapter
Some Basic Concepts of Chemistry
Topic
Stoichiometry
Idea tested
Hydrocarbon Combustion General Equation

Same idea in other shifts

Asked 3× in all
  1. 2 Apr 2026, Shift 2 · Q51The ratio of mass percentage (w/w) of C : H in a hydrocarbon is 12 : 1. It has two carbon atoms. The weight (in g) of CO2(g)CO_2(g) formed…MediumSingle correct
  2. 25 Jul 2021, Shift 1 · Q59Consider the complete combustion of butane, the amount of butane utilized to produce 72.0 g of water is ________×10−1\times10^{-1} g. (in…EasyNumerical 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.