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Friday, 9 October

JEE Main 2026 · ChemistryMultiple choiceSingle correctMediumMulti-step

JEE Main 2 April 2026, Shift 2, Chemistry Q51

Question 51 of 75 in this shift, Chemistry question 1 of 25, Section A.

The 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 when 3.38 g of this hydrocarbon is completely burnt in oxygen is (Given: Molar mass in g mol−1^{-1}: C : 12, H : 1, O : 16)
  1. (1)5.685.68
  2. (2)11.4411.44Official answer
  3. (3)22.7422.74
  4. (4)17.0517.05

Official answer

Option 2

NTA final key.

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

Same idea in other shifts

Asked 3× in all
  1. 24 Jun 2022, Shift 1 · Q61If 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…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.