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Science M.C.Q

Carbon and its Compounds · MP Board (MPBSE) STD 10 (Madhya Pradesh - English Medium). 52 questions.

Questions · Page 2 of 2

M.C.Q

MCQ 511 Mark
The molecular formula of a homologue of butane is:
  • A
    $\ce{C_4H_8}$
  • B
    $\ce{C_3H_6}$
  • C
    $\ce{C_4H_6}$
  • ✓
    $\ce{C_3H_8}$
Answer
Correct option: D.
$\ce{C_3H_8}$
$\ce{C_3H_8}$ is the molecular formula of a homologue of butane as it satisfies the general formula $\ce{C_nH_{2n+2}​​​​​​​}$​​​​​​​ of the alkane series.
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MCQ 521 Mark
The number of carbon atoms present in the molecule of fifth member of the homologous series of alkynes is:
  • A
    Four.
  • B
    Five.
  • ✓
    Six.
  • D
    Seven.
Answer
Correct option: C.
Six.
The number of carbon atoms present in the molecule of the fifth member of the homologous series of alkynes is 6, as the first compound of this series has minimum two carbon atoms.
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