node06\B0AH-AI\Kota\JEE(MAIN)\Crash Course Sheet\Che\Eng\Organic Chemistry\04-Hydrocarbon & Aromatic Hydrocarbon.p65
E
J E E ( M a i n ) - C h e m i s t r y ALLEN
20
HYDROCARBON & AROMATIC HYDROCARBON EXERCISE-I
1. What is the major product of the following reaction:
CH CH
| |
H C—CH—CH — C—CH
| |
Br CH
3 3
33
3
Me CO K
3
Å
(1)
CH CH
| |
H C=CH—C H —C—CH
|
CH
3 3
23
3
(2)
H C—CH = CH —C—CH
33
CH
3
CH
3
CH
3
(3)
CH CH
|| |
H C—H C— C —C—CH
|
CH
2 3
323
3
(4) None of these
2. Which of the following anion will be migrates towards
anode to prepare 2,3–Dimethyl butane in kolbe's
electrolysis :-
(1)
O
O
Θ
(2)
O
O
Θ
(3)
O
O
Θ
(4)
O
O
Θ
3. Which of the following reagent can not used to
distinguish but–1–yne and but–2–yne :-
(1) [Cu(NH3)2]Å(2) NaOH
(3) [Ag(NH3)2]Å(4) Cold–Dil–KMnO4
4.
CH C–C–OH
º
O
Dil. H SO /HgSO
244
Major product?
(1)
CH
2
CHO
CHO
(2)
CH
2
CHO
COOH
(3) CH º C – CH3(4) CH2 = CH – COOH
5. What is product of following reaction :-
CH —C—OH + CH —CH—MgI
33
®
CH
3
CH
3
CH
3
Product
(1)
CH
3
CH —CH—CH
33
(2)
CH
3
CH
3
CH —CH—CH
33
(3) CH3—CH2—CH3
(4) CH4
6.
Cl – – Br Na/Dry ether (A)
97%
Product (A) of abo ve reac tion is :
(1) (2) (3) (4)
7.
Br /h
2
n
CH
3
Monobromo derivatives
The number of possible monobromo products is
(excluding stereoisomers) :
(1) 4 (2) 5 (3) 8 (4) 10
8.
O
3
Zn
Which of the following products cannot be obtained
in ozonolysis of o-xylene ?
(1)
CHO
CHO
(2)
CH –C–C–H
3
O
O
(3)
CH –C–C–CH
33
O
O
(4)
CH –C–C–CHO
3
O
O
