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Science · 2023 · 5 marks
CBSE 2023 · Region 4 · Set 3 · Q36
(A) Write the chemical equation for the following: (i) Combustion of methane (ii) Oxidation of ethanol (iii) Hydrogenation of ethene (iv)…
Write the chemical equation for the following:
(i)
Combustion of methane
(ii)
Oxidation of ethanol
(iii)
Hydrogenation of ethene
(iv)
Esterification Reaction
(v)
Saponification Reaction
(i)
Draw two structural isomers of butane.
(ii)
Draw the structures of propanol and propanone.
(iii)
Name the third homologue of:
(a)
alcohols
(b)
aldehydes
(iv)
Name the following:
(a)
(b)
$\displaystyle \mathrm{CH}_{3}-\mathrm{CH}_{2} \mathrm{CH}=\mathrm{CH}_{2}$
(v)
Show the covalent bond formation in nitrogen molecule.
Marking-scheme solution
(A)
(i) \(\displaystyle \mathrm{CH}_{4}+2 \mathrm{O}_{2} \rightarrow \mathrm{CO}_{2}+2 \mathrm{H}_{2} \mathrm{O}\)
(ii)
\[\mathrm{CH}_{3}-\mathrm{CH}_{2} \mathrm{OH} \xrightarrow[\text { Or acidified } \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}+\text { Heat }]{\text { Alkelaline } \mathrm{KMnO}_{4}+\text { Heat }} \mathrm{CH}_{3} \mathrm{COOH}
\]
Ethanol
Ethanoic Acid
(v)
All Carbon and its Compounds questions2023 question paperNCERT solutions: Carbon and its CompoundsPractice Carbon and its Compounds →
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CBSE Class 10 Science past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.