Class 12 Chemistry · Chapter 9 · Test 2
Functional Group Interconversions
45 MCQs
45 questions · 40 min · 45 marks
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Sample questions
The first 5 of 45. Try each one, then tap to see the answer.
Question 1
Which reagent converts an alkene into a halogenoalkane?
- AHBr
- BKOH(aq)
- CNaBH4
- DLiAlH4
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Answer: A
Hydrogen halides add across the double bond.
Question 2
Which reagent converts a halogenoalkane into an alkene?
- ADilute HCl
- BKOH in alcohol
- CNaBH4
- DKMnO4
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Answer: B
Ethanolic KOH eliminates HX.
Question 3
Which reagent converts a halogenoalkane into an alcohol?
- AEthanolic KOH
- BHBr
- CAqueous KOH with heat
- DPBr3
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Answer: C
Hydroxide substitutes the halogen.
Question 4
Which reagents convert an alcohol into a halogenoalkane?
- AKOH(aq)
- BNaBH4
- CKCN
- DPBr3 or SOCl2
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Answer: D
These replace the -OH group by a halogen.
Question 5
A halogenoalkane is converted into a primary amine by:
- AExcess ethanolic NH3 under pressure
- BKMnO4
- CNaBH4
- DDilute HCl
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Answer: A
Nucleophilic substitution by ammonia gives the amine.
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