1. How many structural isomers are possible for a compound with molecular formula C3H7Cl
Ans: 2
2. In CH3CH2Br, % of Br is
Ans: 75
Sol:
3. Gem- dibromide is
Ans: CH3CBr2CH3
Sol: Gem-dihalides are those in which two halogen atoms are attached on the same carbon atom.
4. Ethylidene dibromide is
Ans:CH3 - CHBr2
5. Benzylidene chloride is
Ans: C6H5CH2Cl
6. Which of the following halide is 2º
(a) Isopropyl chloride (b) Isobutyl chloride
(c) n-propyl chloride (d) n-butyl chloride
Ans: Isopropyl chloride
Sol:
7. Haloforms are trihalogen derivatives of
Ans: Methane
Sol:
8. Benzene hexachloride is
Ans: 1, 2, 3, 4, 5, 6-hexachlorocyclohexane
9. Number of π − bonds present in B.H.C. (Benzene hexachloride) are
Ans: Zero
10. The general formula for alkyl halides is
Ans: CnH2n+1X
11. Which of the following is a primary halide
(a) Isopropyl iodide (b) Secondary butyl iodide
(c) Tertiary butyl bromide (d) Neo hexyl chloride
Ans: d (Neo hexyl chloride)
Sol: Neohexyl chloride is a primary halide as in it Cl-atom is attached to a primary carbon.
12. Full name of DDT is
Ans: 1, 1, 1-trichloro-2, 2-bis(p-chlorophenyl) ethane
Sol:
13. The compound which contains all the four 1º ,2º ,3º and 4º carbon atoms is
Ans: 3-chloro-2, 3-dimethylpentane
Sol:
