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Q. No.Predict the order of reactivity of the following four isomers towards SN2 reaction.
(I) CH3CH2CH2CH2Cl
(II) CH3CH2CH(Cl)CH3
(III) (CH3)2CHCH2Cl
(IV) (CH3)3CCl
1.
(IV) > (III) > (II) > (I)
2.
(I) > (II) > (III) > (IV)
3.
(I) > (III) > (II) > (IV)
4.
(IV) > (II) > (III) > (I)
Subtopic: Chemical Properties |
68%
Level 2: 60%+
NEET - 2022
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Which of the following methods is incorrect for the synthesis of alkenes?
1. Treatment of alkynes with Na in liquid NH3
2. Heating alkyl halides with alcoholic KOH
3. Treating alkyl halides in aqueous KOH solution
4. Treating vicinal dihalides with Zn metal
1. Treatment of alkynes with Na in liquid NH3
2. Heating alkyl halides with alcoholic KOH
3. Treating alkyl halides in aqueous KOH solution
4. Treating vicinal dihalides with Zn metal
Subtopic: Chemical Properties |
78%
Level 2: 60%+
NEET - 2022
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Subtopic: Chemical Properties |
79%
Level 2: 60%+
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Match the organic compound given in Column I with their names in Column II. Select the correct option.
1. a=ii; b=iii; c=i; d=iv
2. a=iv; b=i; c=ii; d=iii
3. a=iv; b=iii; c=i; d=ii
4. a=ii; b=iv; c=i; d=iii
| Column I | Column II | |
| (a) CH2Cl2 | (i) | neo-Pentyl chloride |
| (b) (CH3)3CCH2Cl | (ii) | Ethylidene chloride |
| (c) CH3CHCl2 | (iii) | Ethylene dichloride |
(d)  |
(iv) | Methylene chloride |
2. a=iv; b=i; c=ii; d=iii
3. a=iv; b=iii; c=i; d=ii
4. a=ii; b=iv; c=i; d=iii
Subtopic: Introduction and Physical Properties |
91%
Level 1: 80%+
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Match List I with List II:
Choose the correct answer from the options given below:
| List I Reaction |
List II Type of reaction |
A.  |
I. Nucleophilic substitution |
B.  |
II. Saytzeff elimination |
C.  |
III. Electrophilic addition |
D.  |
IV. Electrophilic substitution |
Choose the correct answer from the options given below:
| (A) | (B) | (C) | (D) | |
| !. | (II) | (IV) | (III) | (I) |
| 2. | (IV) | (II) | (III) | (I) |
| 3. | (IV) | (II) | (I) | (III) |
| 4. | (II) | (IV) | (I) | (III) |
Subtopic: Chemical Properties |
83%
Level 1: 80%+
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In which of the following option the reaction does not match with their correct product?
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
Subtopic: Chemical Properties |
87%
Level 1: 80%+
JEE
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The product formed in the following reaction sequence is:
| 1. |  |
| 2. | \(CH_3-CH=CH-CH_3 \) |
| 3. | \(CH_3 -CH_2 -CH = CH_2 \) |
| 4. | \(CH_3 -CH_2 -CH_2 -CH_2 -OH \) |
Subtopic: Chemical Properties |
63%
Level 2: 60%+
NEET - 2022
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Subtopic: Chemical Properties |
80%
Level 1: 80%+
NEET - 2022
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Subtopic: Isomerism & Chirality |
62%
Level 2: 60%+
JEE
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Identify the statement that is incorrect regarding chirality:
| 1. | A racemic mixture shows zero optical rotation |
| 2. | SN1 reaction yields a 1:1 mixture of both enantiomers |
| 3. | The product obtained by SN2 reaction of haloalkane having chirality at the reactive site shows the inversion of configuration |
| 4. | Enantiomers are superimposable mirror images on each other |
Subtopic: Chemical Properties |
77%
Level 2: 60%+
NEET - 2022
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