MCQ practice · SSC Chemistry Board questions · Chapter 11: Mineral Resources: Fossils
What is the name of compound 'A'?
Think it through first, then pick an option.
- a ethene
- b ethanol
- c ethanal
- d ethane
Answer and explanation
Correct answer: b ethanol
With n = 2 it is C₂H₅Cl; aqueous NaOH gives ethanol and NaCl.
Why the other options are wrong
- a ethene: Ethene forms with alcoholic NaOH; here it is aqueous, so ethanol.
- c ethanal: Ethanal is B from the second step; A from the first is ethanol.
- d ethane: No ethane forms; aqueous alkali turns an alkyl halide into an alcohol.
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