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Q.

Is it true that the molecular formula of an alkane, alkene and alkyne having 5 carbon atoms is $C_{5} H_{12}$ , $C_{5} H_{10}$ and $C_{5} H_{8}$ respectively?

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a

True

b

False

answer is A.

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Detailed Solution

The above statement is true.
Alkane is a hydrocarbon which has a general formula

C_{n} H_{2 n + 2}

, alkene is a hydrocarbon which has general formula

C_{n} H_{2 n}

and for alkyne it is

C_{n} H_{2 n - 2}

. If the value of n is 2, then formulas are

C_{2} H_{6}, C_{2} H_{4}

and

C_{2} H_{2}

respectively. Similarly for n = 5, it will be

C_{5} H_{12}

,

C_{5} H_{10}

and

C_{5} H_{8}

respectively.

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Is it true that the molecular formula of an alkane, alkene and alkyne having 5 carbon atoms isC5H12, C5H10 and C5H8 respectively?