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Science · 2022 · 2 marks
CBSE 2022 · Region 4 · Set 1 · Q7
Consider the carbon compounds having following molecular formula :(i)$\displaystyle \mathrm{C}_{3} \mathrm{H}_{6}$(ii)$\displaystyle \mathrm{C}_{3} \mathrm{H}_{8}$(iii)$\displaystyle \mathrm{C}_{4} \mathrm{H}_{6}$(iv)$\displaystyle \mathrm{C}_{6} \mathrm{H}_{6}$(v)$\displaystyle \mathrm{C}_{6} \mathrm{H}_{12}$(a)State the number of double covalent bonds present in $\displaystyle \mathrm{C}_{3} \mathrm{H}_{6}$.(b)Write the formula of first member of the homologous series to which the carbon compound $\displaystyle \mathrm{C}_{4} \mathrm{H}_{6}$ belongs.(c)Which one of the above compounds forms ring structure of carbon atoms?(d)Identify, which of the above compounds, is a member of alkane series.
Consider the carbon compounds having following molecular formula :
(i)
$\displaystyle \mathrm{C}_{3} \mathrm{H}_{6}$
(ii)
$\displaystyle \mathrm{C}_{3} \mathrm{H}_{8}$
(iii)
$\displaystyle \mathrm{C}_{4} \mathrm{H}_{6}$
(iv)
$\displaystyle \mathrm{C}_{6} \mathrm{H}_{6}$
(v)
$\displaystyle \mathrm{C}_{6} \mathrm{H}_{12}$
(a)
State the number of double covalent bonds present in $\displaystyle \mathrm{C}_{3} \mathrm{H}_{6}$.
(b)
Write the formula of first member of the homologous series to which the carbon compound $\displaystyle \mathrm{C}_{4} \mathrm{H}_{6}$ belongs.
(c)
Which one of the above compounds forms ring structure of carbon atoms?
(d)
Identify, which of the above compounds, is a member of alkane series.
Marking-scheme solution
(a) One double bond
(b) \(\displaystyle \mathrm{C}_{2} \mathrm{H}_{2}\)
(c) \(\displaystyle \mathrm{C}_{6} \mathrm{H}_{6}\)
(d) \(\displaystyle \mathrm{C}_{3} \mathrm{H}_{8}\)
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CBSE Class 10 Science past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.