JEE Main 2023ChemistrySome Basic Concepts of ChemistryEasyMCQ

JEE Main 2023 — Some Basic Concepts of Chemistry Question with Solution

JEE Main 2023 (10 Apr Shift 2)

Question

Match List-I with List-II
  List-I   List-II
A 16 g of CH4 (g) I Weighs 28g
B 1 g of H2(g) II 60.2 × 1023 electrons
C 1 mole of N2 (g) III Weighs 32g
D 0.5 mol of SO2(g) IV Occupies11.4 L volume at STP

Choose the correct answer from the options given below:

Choose an option

Show full solutionCorrect option: B
Correct answer
BA-II, B-IV, C-I, D-III

Step-by-step explanation

The number of moles =MassMolar mass

The number of molecules = moles×NA

One mole of any gas occupies 22.7 L at STP.

(A) Moles of CH4=1616=1
Molecules =6.02×1023
Electrons =10×6.02×1023
=60.2×1023

(B) Moles of H2=12=0.5 mole
Volume at STP =12×22.7=11.35 lit .

(C) 1 mole N2=28gm

(D) 0.5 mole SO2=12×64=32gm

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About this question

This is a previous-year question from JEE Main 2023, covering the Some Basic Concepts of Chemistry 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.