What is formed when a primary alcohol undergoes catalytic dehydrogenation?

1. Aldehyde 

2. Ketone 

3. Alkene

4. Acid 

Subtopic:  Isomers & Reaction Mechanism |
 72%
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The compound which on reduction with LiAlH4 gives two diffrent alcohols:

1. CH3COOCH3                         

2.  CH3COOC2H5

3. CH3COCH3                           

4.  CH3CHO

Subtopic:  Aldehydes & Ketones: Preparation & Properties | Isomers & Reaction Mechanism | Acid Derivatives - Preparation, Properties & Uses |
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HCHO and HCOOH are distinguished by treating with:

1. Tollens reagent

2. NaHCO3

3. Fehling's Solution

4. Benedict Solution

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 60%
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Lacrymator or tear gas is:

1. C6H5COCl                               

2. C6H5OC6H5

3. C6H5COCH2Cl                         

4. C6H5COCH3

Subtopic:  Acid Derivatives - Preparation, Properties & Uses | Name Reaction |
 52%
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Formaldehyde can be distinguished from acetaldehyde by:

1. Fehling's solution                     

2. Schiff's reagent

3. Ammonia                               

4. Ammoniacal AgNO3

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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The correct acidity order of the following is:

1. (III)>(IV)>(II)>(I)                       

2. (IV)>(III)>(I)>(II)

3. (III)>(II)>(I)>(IV)                       

4. (II)>(III)>(IV)>(I)  

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 57%
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Acetone reacts with iodine (I2) to form iodoform in the presence of      

1. CaCO3   

2. NaOH     

3. KOH     

4. MgCO3

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 86%
From NCERT
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Generally Aldehydes behave as:

1. Oxidising agent

2. Reducing agent

3. Dehydration agent

4. Oxidizing as well as reducing agent

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
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Compound (A) C5H10O forms a phenyl hydrazone and gives negative Tollen's and iodoform tests. Compound (A) on reduction gives n-pentane. Compound (A) is:

1. a primary alcohol

2. an aldehyde

3. a ketone

4. a secondary alcohol 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 60%
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RCOOH RCH2OH. This mode of reduction of an acid to alcohol can be affected only by:

1. Zn/HCl

2. Na-alcohol

3. aluminium isopropoxide and isopropyl alcohol

4. LiAlH4

 

Subtopic:  Aldehydes & Ketones: Preparation & Properties |
 79%
From NCERT
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