MCQ
The $IUPAC$ name of


- ✓$3-$ethyl$-4-4-$dimethylheptane
- B$1, 1-$diethyl$-2,2-$dimethylpentane
- C$4, 4-$dimethyl$-5 ,5-$diethylpentane
- D$5, 5-$diethyl$-4,4-$dimethylpentane.

According to the structure as referring to IMAGE $02$, first of all, long chain is selected, i.e., here it is of $7$ carbon.
So, it will be named as heptane and then third and fourth carbon contains one ethyl and $2$ methyl group.
So it will be named as $3$ - Ethyl -$4, 4$-dimethylheptane.
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${C_{(gr)}} + {O_{2(g)}} \to C{O_{2(g)}}\,\,\,\Delta H = x\,kJ/mol$
${C_{(gr)}} + \frac{1}{2}{O_{2(g)}} \to C{O_{(g)}}\,\,\,\Delta H = y\,kJ/mol$
$C{O_{(g)}} + \frac{1}{2}{O_{2(g)}} \to C{O_2}_{(g)}\,\,\,\Delta H = z\,kJ/mol$
$C{S_2}(g) + 4{H_2}(g) \to C{H_4}(g) + 2{H_2}S(g)$
