Ozonolysis of propyne gives:

1. CH3CHO               

2. CH3COCHO

3. HCHO                   

4. CHOCHO

Subtopic:  Aldehydes & Ketones |
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CH3-CC-CH3NaNH2X; what is X?

1. CH3-CH2CH2CH3

2. CH3CH2CCH

3.

4. CH2=C=CH-CH3

Subtopic:  Differentiation of Organic Compound |
 50%
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Propyne on oxidation with SeO2 gives:

(1) CHOCHO                   

(2) CH3CH2CHO

(3) CH3COCHO               

(4) CHOCH2CHO

Subtopic:  Aldehydes & Ketones |
 58%
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When an alcoholic solution of ethylene dibromide is heated with granulated zinc, the compound formed is:

(1) ethane 

(2) ethylene

(3) butane

(4) isobutane

Subtopic:  Differentiation of Organic Compound |
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Acetylene and HCHO react in the presence of copper acetylide catalyst to form:

(1) 2-Butyne-1,4-diol

(2) 1-Butyne-1,4-diol

(3) 2-Butyne-1,2-diol

(4) None of these

Subtopic:  Aldehydes & Ketones |
 50%
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What would be the product formed when 1-bromo-3-chlorocyclobutane reacts with two equivalents of metallic sodium in ether?

1. 

2. 

3. 

4. 

 

 

Subtopic:  Ascending and Descending Series |
 79%
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Which reagent can be used to distinguish between cis-Cyclopentane-1,2-diol and trans-Cyclopentane-1,2-diol?

1. Ozone

2. MnO2

3. Aluminium isopropoxide

4. Acetone

Subtopic:  Differentiation of Organic Compound |
NEET - 2016
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In following reaction, find out X and Y.

In the reaction,
H-CC-H   (ii)CH3CH2Br(I)NaNH2/liq.NH3X
             X(ii)CH3CH2Br(i)NaNH2/liq.NH3Y

1. X=2-Butyne ; Y=3-Hexyne

2. X=2-Butyne ; Y=2-Hexyne

3. X=1-Butyne ; Y=2-Hexyne

4. X=1-Butyne ; Y=3-Hexyne

Subtopic:  Ascending and Descending Series |
 52%
NEET - 2016
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An organic compound X having molecular formula C5H10O yields phenyl hydrazone and

gives negative response to the iodoform test and Tollen's test. It produces n-pentane on

reduction. X could be:

1. Pentenal

2. 2-Pentanone

3. 3-Pentanone

4. n-Amyl alcohol

Subtopic:  Aldehydes & Ketones |
 65%
From NCERT
NEET - 2015
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Which of the following will not be soluble in sodium hydrogen carbonate?

1. 2, 4,6 - trinitrophenol

2. benzoic acid

3. o-nitrophenol

4. Benzenesulphonic acid

Subtopic:  Differentiation of Organic Compound |
 56%
NEET - 2014
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