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प्रश्न
An alkyne has seventy five carbon atoms in its molecule. The number of hydrogen atoms in its molecule will be:
(a) 150
(b) 148
(c) 152
(d) 146
उत्तर
148
The number of hydrogen atoms in an alkyne that has 75 carbon atoms in its molecule is 148. The general formula of the alkynes is CnH2n-2, where 'n' is the number of carbon atoms in each molecule. Substituting n = 75 in the formula of alkynes, we get the number of hydrogen atoms to be 148.
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