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← JEE Main 2026 · 6 Apr · Shift 2
ChemistrySingle correct+4 / -1Question 51 of 75

JEE Main 2026 · 6 Apr · Shift 2, Chemistry question 51

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. 2 g of OX2\ce{O2} gas

B. 4 g 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 :

Choose one option
Answer and worked solution

Official answer: D

Moles of atoms.

  • A: 232×2=18\tfrac2{32}\times2=\tfrac18.
  • B: 464×3=316\tfrac4{64}\times3=\tfrac3{16}.
  • C: 1.422.4×2=18\tfrac{1.4}{22.4}\times2=\tfrac18.
  • D: 0.0522.4≈0.0022\tfrac{0.05}{22.4}\approx0.0022.
  • E: 0.0625×2=180.0625\times2=\tfrac18.

Same: A, C and E.

(D)