a-D-(+)-glucose and β-D-(+)-glucose are :

(a) enantiomers

(b) conformers

(c) epimers

(d) anomers

Subtopic:  Stereo Isomers |
 58%
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The IUPAC name of the compound

is....

1. 3-keto-2-methylhex-4-enal

2. 5-formylhex-2-en-3-one

3. 5-methyl-4-oxohex-2-en-5-al

4. 3-keto-2-methylhex-5-enal

Subtopic:  Nomenclature |
 82%
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The correct order of strengths of the carboxylic acids :-


(a) I>II>III
(b) II>III>I
(c) III>II>I
(d) lI>I>IlI

Subtopic:  Acidic & Basic Character |
 67%
From NCERT
NEET - 2016
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Given,

Which of the given compounds can exhibit tautomerism?

(1) I and II            

(2) I and III

(3) II and III           

(4) I, II and III

Subtopic:  Structural Isomers |
 61%
From NCERT
NEET - 2015
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Which of the following statements is not correct for a nucleophile?

(1) Nucleophile is a Lewis acid

(2) Ammonia is a nucleophile

(3) Nucleophiles attack low electrons density sites

(4) Nucleophiles are not electron seeking

Subtopic:  Nucleophile & Electrophile |
 78%
From NCERT
NEET - 2015
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Which one is most reactive towards nucleophilic addition reaction?

1.       2.

 

3.           4.

Subtopic:  Nucleophile & Electrophile |
 82%
From NCERT
NEET - 2014
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The radical  is aromatic because it has:

1. 6 p-orbitals and 6 unpaired electrons

2. 7 p-orbitals and 6 unpaired electrons

3. 7 p-orbitals and 7 unpaired electrons

4. 6 p-orbitals and 7 unpaired electrons

Subtopic:  Reaction Intermediates ; Preparation & Properties |
From NCERT
NEET - 2013
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Which of the following does not exhibit optical isomerism?

(1) Maleic acid      

(2) α-amino acids

(3) Lactic acid       

(4) Tartaric acid

Subtopic:  Stereo Isomers |
 56%
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Which one of the following is most reactive towards electrophilic reagent?

Subtopic:  Nucleophile & Electrophile |
From NCERT
NEET - 2011
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Liquid hydrocarbons can be converted to a mixture of gaseous hydrocarbons by:-

1. Oxidation
2. Cracking
3. Distillation under reduced pressure
4. Hydrolysis

Subtopic:  Alkanes, Alkenes and Alkynes - Chemical Properties |
 71%
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