An organic compound (A) contains 69.77% carbon, 11.63% hydrogen, and rest oxygen. The molecular mass of the compound is 86. It does not reduce Tollens’ reagent but forms an addition compound with sodium hydrogen sulphite and gives a positive iodoform test. On vigorous oxidation, it gives ethanoic and propanoic acid. Compound A would be:

1. Pentan-2-one

2. Butanone

3. 3-Methylbutanone

4. Propan-2-ol

Subtopic:  Isomers & Reaction Mechanism |
 66%
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Arrange the following compounds in increasing order of their boiling points:

CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3


1. CH3CHO< CH3CH2OH <CH3OCH3< CH3CH2CH3
2. CH3CH2CH3<CH3OCH3< CH3CHO<CH3CH2OH 
3. CH3CH2CH3>CH3OCH3 >CH3CHO>CH3CH2OH
4. CH3CH2CH3< CH3CHO<CH3CH2OH <CH3OCH3 

 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 84%
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The correct sequence of increasing orders of reactivity in nucleophilic addition reaction is:

1. Butanone < Propanone < Propanal < Ethanal

2. Butanone > Propanone > Propanal > Ethanal

3. Butanone < Propanal < Propanone < Ethanal

4.  Propanal < Propanone < Ethanal < Butanone 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 82%
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Arrange the following compounds in increasing order of their reactivity in nucleophilic addition reactions :Benzaldehyde, p-Tolualdehyde, p-Nitrobenzaldehyde, Acetophenone.

1. Acetophenone < Benzaldehyde <  p-tolualdehyde < p-Nitrobenzaldehyde

2. Acetophenone < p-tolualdehyde < Benzaldehyde < p-Nitrobenzaldehyde

3. Acetophenone > p-tolualdehyde > Benzaldehyde < p-Nitrobenzaldehyde

4. Acetophenone < p-tolualdehyde <  p-Nitrobenzaldehyde < Benzaldehyde 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 74%
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What will be the IUPAC names of the following compound ?

1. 2,4,6-Trinitrobenzoic acid

2. 1,3,5-Trinitrobenzoic acid

3. 2-oxo-1,3,5-dinitrobenzene

4. None of the above

Subtopic:  Carboxylic Acids: Preparation & Properties |
 81%
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Cannizzaro’s reaction is not given by:
 

1.  2.
3. HCHO 4. CH3CHO
Subtopic:  Name Reaction |
 77%
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The compound below is treated with a concentrated aqueous KOH solution. The products obtained are:

1.
2.
3.
4.
Subtopic:  Name Reaction |
 86%
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What is the most suitable reagent for the below mentioned conversion?

CH3CH=CHCH2CO
|| -CH3   
 CH3-CH=CHCH2CO
||OH

1.  Tollens' reagent 

2.  Benzoyl peroxide

3.  I2 and NaOH solution

4.  Sn and NaOH solution

Subtopic:  Name Reaction |
 71%
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Match the common names given in Column I with the IUPAC names given in Column II.

Column l 
(Common names)
Column ll
(IUPAC names)
A. Cinnamaldehyde 1. Pentanal 
B. Acetophenone 2. Prop-2-enal
C. Valeraldehyde 3. 1-phenylethanone
D. Acrolein 4. 3-Phenylprop-2-en-al

Codes

A B C D
1. 2 3 4 1
2. 3 1 4 2
3. 1 4 3 2
4. 4 3 1 2
Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 73%
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Match the acids given in Column I with their correct IUPAC names given in Column II and mark the appropriate option:

Column l
(Acids)
Column ll
(IUPAC names)
A. Phthalic acid  1. Hexane-1,6-dioic acid 
B. Glutaric acid  2. Benzene-1,2-dicarboxylic acid
C. Succinic acid  3. Pentane-1,5-dioic acid 
D. Adipic acid  4. Butane-1,4-dioic acid 


Codes

A B C D
1. 2 3 4 1
2. 3 1 4 2
3. 1 4 3 2
4. 4 3 2 1
Subtopic:  Carboxylic Acids: Preparation & Properties |
 80%
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