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Model Paper 1 — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceModel Paper 11 Mark
MCQ
What are a and b?
Image
  • A
    a = divide by 22.4 L, b -multiply by 22.4 L
  • B
    a = divide by 22.4 L, b = divide by 22.4 L
  • C
    a = multiply by 22.4 L, b multiply by 22.4 L
  • ✓
    a = multiply by 22.4 L, b = divide by 22.4 L
✓

Answer

Correct option: D.
a = multiply by 22.4 L, b = divide by 22.4 L
(d) a multiply by 22.4 L, b divide by 22.4 L
Explanation: Volume of gas at STP $=$ No. of moles $\underbrace{\times 22.4 L}_a$
No. of moles $=$ Volume of gas at STP $\underbrace{\div 22.4 L}_b$

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