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Cyclohexanol gives best yield of cyclohexene with -

1. conc.H3PO4

2. conc.HCl

3. conc.HBr

4. All of the above

Subtopic:  Alcohols: Preparation & Properties |
 78%
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The correct IUPAC name of the given compound is:

1.  2-Chloro-5-hydroxyhexane             
2.  2-Hydroxy-5-chlorohexane
3.  5-Chlorohexan-2-ol                           
4.  2-Chlorohexan-5-ol

Subtopic:  Alcohols: Preparation & Properties |
 82%
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The most acidic compound among the following is:
 

1.  Benzyl alcohol                   

2.  Cyclohexanol

3.  Phenol                               

4.  m-Chlorophenol

Subtopic:  Phenols: Preparation & Properties |
 69%
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Phenol and ethanol can be differentiated through their distinct reactions with:

I. Br2/water     

II. Na     

III. Neutral FeCl3      

Choose the correct option:
1. I, II
2. II, III
3. I only
4. I, III

Subtopic:  Phenols: Preparation & Properties |
 67%
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Match the starting material in Column I with the products formed (Column II) in the reaction with HI.

Column I

Column II

A. 1.
B. 2.
C. 3.
D. 4.
5.
 
A B C D
1. 2 3 4 1
2. 3 1 5 2
3. 5 4 3 2
4. 4 5 2 1
Subtopic:  Ethers: Preparation & Properties, Uses |
 92%
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Match the reactions from Column-I with their corresponding descriptions from Column-II and select the correct option.

Column-l (Name of Reaction)

Column-ll (Description of Reaction)

A.

Reimer-Tiemann reaction 

I.

Conversion of phenol to o-hydroxysalicylic aid 

B.

Kolbe's reaction 

II.

Heated copper at 573K

C.

Conversion of 2° alcohol to a ketone 

III.

Reaction of an alkyl halide
with sodium alkoxide 

D.

Williamson's synthesis 

Iv.

Conversion of phenol to salicylaldehyde

Codes:

A B C D
1. II III IV I
2. III IV I II
3. I IV III II
4. IV I II III
Subtopic:  Ethers: Preparation & Properties, Uses |
 90%
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Select the correct option based on statements below:

Assertion (A): p-Nitrophenol is more acidic than phenol.
Reason (R): Nitro group helps in the stabilization of the phenoxide ion by dispersal of negative charge due to resonance.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. (A) is False but (R) is True.
Subtopic:  Alcohols: Preparation & Properties |
 86%
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Which of the following will show turbidity immediately with conc. HCl/ZnCl2?

1.  CH3OH

2.  C6H5OH

3.  (CH3)3COH

4.  C2H5OH

Subtopic:  Mechanism of Dehydration, Methanol & Ethanol |
 90%
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An appropriate set of reactants for the preparation of 1-methoxy-4-nitrobenzene is/are : 

1.
2.
3. \(\mathrm{CH_3-CH_2-CH_2-O-CH_3+HBr}\)
4. \(\mathrm{(CH_3)_3C-OC_2H_5+HI}\)

Subtopic:  Electrophilic Substitution Reactions, Uses of Phenols |
 80%
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The most reactive compound among the following for electrophilic aromatic substitution is:

1.  2.
3. 4.
Subtopic:  Phenols: Preparation & Properties |
 61%
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