Among cyclohexanol (I), acetic acid (II), 2, 4, 6-trinitrophenol (III) and phenol (IV) the correct order of decreasing acidic character will be:

1. III>II>IV>I 2. II>III>I>IV
3. II>III>IV>I 4. III>IV>II>I

Subtopic:  Directive Effect of functional grp |
 51%
From NCERT
AIPMT - 2010
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Which one is most reactive towards SN1 reaction?

1. C6H5CH(C6H5)Br

2. C6H5CH(CH3)Br

3. C6H5C(CH3)(C6H5)Br

4. C6H5CH2Br

Subtopic:  SN1 & SN2 Reactions |
 70%
From NCERT
AIPMT - 2010
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Which of the following reactions is an example of a nucleophilic substitution reaction?
1. RX + KOH → ROH + KX
2. 2RX + 2Na →R — R + 2NaX
3. RX + H2→RH + HX
4. RX + Mg →RMg X
Subtopic:  SN1 & SN2 Reactions |
 79%
From NCERT
AIPMT - 2009
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Which one of the following is most reactive towards electrophilic attack?
 

1. 2.
3. 4.
Subtopic:  Directive Effect of functional grp |
 59%
From NCERT
AIPMT - 2008
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In a SN2 substitution reaction of the type 
\(\mathrm{R}-\mathrm{Br}+\mathrm{Cl}^{-} \xrightarrow{\mathrm{DMF}} \mathrm{R}-\mathrm{Cl}+\mathrm{Br}^{-}\)

one of the following that has the highest relative rate is:
 

1. \(\mathrm{CH}_3-\mathrm{CH}_2-\mathrm{CH}_2 \mathrm{Br}\) 2.
3. 4. \(\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{Br}\)

Subtopic:  SN1 & SN2 Reactions |
 66%
From NCERT
AIPMT - 2008
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For the above-given reaction, A (Predominantly) is:

1. 2.
3. 4.
Subtopic:  Reaction Intermediates |
 73%
From NCERT
AIPMT - 2008
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Among the following compounds the one that is most reactive towards electrophilic nitration is:
1. Benzoic acid
2. Nitrobenzene
3. Toluene
4. Benzene

Subtopic:  Reagents |
 69%
From NCERT
AIPMT - 2012
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Some meta-directing substituents in aromatic substitution are given.
Most deactivating group among the following is: 

1. –SO3H

2. –COOH

3. –NO2

4. –C≡N

Subtopic:  Directive Effect of functional grp |
 68%
From NCERT
AIPMT - 2013
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Which of the following is the most correct electron displacement for a nucleophilic reaction to take place? 

1.
2.
3.
4.
Subtopic:  Reaction Intermediates |
 73%
From NCERT
NEET - 2015
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