JEE Main 2023 — Hydrogen Question with Solution
From: JEE Main 2023 (Online) 1st February Morning Shift
Question
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R
Assertion A : Hydrogen is an environment friendly fuel.
Reason R : Atomic number of hydrogen is 1 and it is a very light element.
In the light of the above statements, choose the correct answer from the options given below :
Choose an option
Show full solutionCorrect option: A
Step-by-step explanation
The correct answer is (A) Both A and R are true but R is NOT the correct explanation of A.
Assertion A is true that hydrogen is an environmentally friendly fuel because when hydrogen is combusted it produces only water vapor and no harmful pollutants or greenhouse gases.
Reason R is also true that the atomic number of hydrogen is 1 and it is a very light element. However, it is not a correct explanation for Assertion A as the environmental friendliness of hydrogen as a fuel is not solely determined by its atomic number or weight, but rather by how it is produced, stored, and transported. The environmental impact of hydrogen as a fuel source depends on various factors, such as the method used for its production and the emissions associated with its transportation and storage.
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This is a previous-year question from JEE Main 2023, covering the Hydrogen chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.