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Organic Chemistry - Hydrocarbons
11.
The reaction of RCH2CHX2 with alcoholic KOH followed by treatment with NaNH2 gives
- A.only RCH=CHX
- B.only RC=CH
- C.a mixture of (a) and (b)
- D.none of these
- Answer
- Report
Answer : [B]
12.
A compound C6H10 decolourizes bromine in carbon tetrachloride and
reacts with Ag⁺ in ammonia to give an insoluble salt. On treatment with
excess hydrogen in the presence of an Ni catalyst, this compound gives
2-methylpentane. The structure of the compound C6H10 is
- A.
- B.
- C.
- D.
- Answer
- Report
Answer : [D]
13.
In the following halogen-substituted hydrocarbon, the hydrogen atom
that can be eliminated most readily is 
- A.Ha
- B.Hb
- C.Hc
- D.Hd
- Answer
- Report
Answer : [D]
14.
Which of the following statements is true for ethane, ethene and acetylene?
- A.Acetylene is the weakest acid and has the longest C—H bond distance.
- B.Acetylene is the strongest acid and has the shortest C—H bond distance.
- C.Ethane is the strongest acid and has the longest C—H bond distance.
- D.Ethene is the strongest acid and has the shortest C—H bond distance.
- Answer
- Report
Answer : [B]
15.
Which is the most stable conformation of cyclohexane?
- A.Chair
- B.Twist
- C.Boat
- D.Staggered
- Answer
- Report
Answer : [A]
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