The compound that is most difficult to protonate is:

1. 2.
3. 4.

Subtopic:  Acidic & Basic Character |
 61%
From NCERT
NEET - 2019
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The IUPAC name of  is : 

1. 3, 4-Dimethylpentanpyl chloride

2. 1-Chloro-1-oxo-2,2-dimethylpentane

3. 2-Ethyl-3-methylbutanoyl chloride

4. 2, 3-Dimethylpentanoyl chloride

Subtopic:  Nomenclature |
 82%
From NCERT
AIPMT - 2006
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The correct order regarding the electronegativity of hybrid orbitals of carbon is:

1. sp>sp2<sp3

2. sp>sp2>sp3

3. sp<sp2>sp3

4. sp<sp2<sp3

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 77%
From NCERT
AIPMT - 2006
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The general molecular formula, which represents the homologous serious of alkanols is:

1. CnH2nO2

2. CnH2nO

3. CnH2n+1O

4. CnH2n+2O

Subtopic:  Nomenclature |
 57%
From NCERT
AIPMT - 2006
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If there is no rotation of plane-polarized light by a compound in a specific solvent
thought to be chiral, it may mean that:

1. The compound is certainly a chiral.

2. The compound is certainly meso.

3. There is no compound in the solvent.

4. The compound may be a racemic mixture.

Subtopic:  Stereo Isomers |
 60%
From NCERT
AIPMT - 2007
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The correct order of acidity among the following is:

1.  CH3COOH > BrCH2COOH > ClCH2COOH > FCH2COOH
2. FCH2COOH > CH3COOH > BrCH2COOH > ClCH2COOH
3.  BrCH2COOH > ClCH2COOH > FCH2COOH > CH3COOH
4. FCH2COOH > ClCH2COOH > BrCH2COOH > CH3COOH

Subtopic:  Electron Displacement Effects | Acidic & Basic Character |
 85%
From NCERT
AIPMT - 2007
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The following compounds are given for reference
(1) CH3-CH2
(2) H2C=CH
(3) HC≡C 

The increasing order of basic strength is:
1. (2)>(1)>(3)
2. (3) >(2) >(1)
3. (1) >(3) >(2)
4. (1) >(2)>(3)

Subtopic:  Hybridisation & Structure of Carbon Compounds |
 68%
From NCERT
AIPMT - 2008
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Which of the following compounds will exhibit cis-trans (geometrical) isomerism?

1. 2-butene

2. Butanol

3. 2-butyne

4. 2-butenol

Subtopic:  Stereo Isomers |
 78%
From NCERT
AIPMT - 2009
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The IUPAC name of the compound having the formula CH≡C–CH=CH2 is:

1. 3-butene-1-yne

2. 1-butyn-3-ene

3. but-1-yne-3-ene

4. 1-butene-3-yne

Subtopic:  Nomenclature |
 71%
From NCERT
AIPMT - 2009
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The most stable conformation of n-butane among the following is:

1. 2.
3. 4.
Subtopic:  Conformational Isomers |
 88%
From NCERT
AIPMT - 2010
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