ICSE Class 10 Chemistry 2023 Solved Paper

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SECTION - I

Choose the correct answers to the questions from the given options.

Question : 14 of 88

Marks: +1, -0

The general formula of hydrocarbons with single covalent bonds is :

${\C}_n {\H}_{2 n+2}$
${\C}_n {\H}_{2 n}$
${\C}_n {\H}_{2 n-2}$
${\C}_n {\H}_{2 n-6}$

Solution:

(a)

{\C}_n {\H}_{2 n+2}

Explanation: Hydrocarbons with single covalent bonds are called alkanes. These are saturated hydrocarbons. Since all the valencies of carbon are fully satisfied in the formula

{\C}_n {\H}_{2 n+2}

by a single bond.

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