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ChemistryJEE Main 6 Apr 2026, Shift 2·Q1·MCQ·Easy–moderate

Some Basic Concepts · Mole concept number of atoms

Which of the following contain the same number of atoms ?

(Given : Molar mass in g mol−1^{-1} of H, He, O and S are 1,4,16 and 32 respectively)

  • (A)2g of OX2\ce{O2} gas
  • (B)4g of SOX2\ce{SO2} gas
  • (C)1400 mL of OX2\ce{O2} at STP
  • (D)0.05 L of He at STP
  • (E)0.0625 mol of HX2\ce{H2} gas
Choose the correct answer from the options given below :
  1. (1)A and B only
  2. (2)B and C only
  3. (3)C and D only
  4. (4)A, C and E only
We corrected a printing error in the original paper

Source printed “4g fo SOX2\ce{SO2} gas”.

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