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ICSE Class 10 Chemistry Question 1 of 24

Solved 2023 Question Paper ICSE Class 10 Chemistry — Question 4

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4
Question

Question 1(iv)

The vapour density of CH3OH is ............... (At. Wt. C=12, H=1, O=16)

  1. 32
  2. 18
  3. 16
  4. 34
Answer

16

Reason —

Molecular mass of methyl alcohol [CH3OH] = 12 + 3(1) + 16 + 1 = 32

Vapour density = molecular mass2\dfrac{\text{molecular mass}}{2} = 322\dfrac{32}{2} = 16

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