323620
Which factors will increase the reactivity of \(>\mathrm{C}=\mathrm{O}\) group? (i) Presence of a group with positive inductive effect (ii) Presence of a group with negative inductive effect (iii) Presence of large alkyl group
1 Only (i)
2 Only (ii)
3 Both (i) & (iii)
4 Both (ii) & (iii)
Explanation:
Reactivity of carbonyl compounds can be increased by increase in number of -I effect groups.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323621
Ketones
where, \({\text{R}} = {\text{R}}' = \) alkyl group can be obtained in one step by
1 hydrolysis of esters
2 oxidation of primary alcohols
3 oxidation of secondary alcohols
4 reaction of acid halides with alcohols.
Explanation:
Secondary alcohols, on oxidation yield ketones.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323622
In the reaction, \({\text{C}}{{\text{H}}_3} - {\text{CH}} = {\text{CH}} - {\text{CHO}}\xrightarrow[{{\text{agent}}}]{{{\text{Oxidizing}}}}\) \(\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}-\mathrm{COOH}\), the oxidising agent can be
In oxidation with Benedict solution, double bond remains intact.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323623
A compound containing only carbon, hydrogen, and oxygen has a molecular weight of 44 . On complete oxidation, it is converted into a compound of molecular weight 60 . The original compound is
1 An aldehyde
2 An acid
3 An alcohol
4 An ether
Explanation:
On complete oxidation, the obtained compound shows increment in molecular weight for only 16. It means only one oxygen atom is added here. This condition is fulfilled by only aldehyde which on oxidation gives acid. \(\mathrm{RCHO} \stackrel{[\mathrm{o}]}{\longrightarrow} \mathrm{RCOOH}\) Hence, the original compound must be \(\underset{\text { mol. wt. } 44}{\mathrm{CH}_{3} \mathrm{CHO}} \stackrel{[\mathrm{O}]}{\longrightarrow} \underset{\text { mol. wt. } 60}{\mathrm{CH}_{3} \mathrm{COOH}}\)
323620
Which factors will increase the reactivity of \(>\mathrm{C}=\mathrm{O}\) group? (i) Presence of a group with positive inductive effect (ii) Presence of a group with negative inductive effect (iii) Presence of large alkyl group
1 Only (i)
2 Only (ii)
3 Both (i) & (iii)
4 Both (ii) & (iii)
Explanation:
Reactivity of carbonyl compounds can be increased by increase in number of -I effect groups.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323621
Ketones
where, \({\text{R}} = {\text{R}}' = \) alkyl group can be obtained in one step by
1 hydrolysis of esters
2 oxidation of primary alcohols
3 oxidation of secondary alcohols
4 reaction of acid halides with alcohols.
Explanation:
Secondary alcohols, on oxidation yield ketones.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323622
In the reaction, \({\text{C}}{{\text{H}}_3} - {\text{CH}} = {\text{CH}} - {\text{CHO}}\xrightarrow[{{\text{agent}}}]{{{\text{Oxidizing}}}}\) \(\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}-\mathrm{COOH}\), the oxidising agent can be
In oxidation with Benedict solution, double bond remains intact.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323623
A compound containing only carbon, hydrogen, and oxygen has a molecular weight of 44 . On complete oxidation, it is converted into a compound of molecular weight 60 . The original compound is
1 An aldehyde
2 An acid
3 An alcohol
4 An ether
Explanation:
On complete oxidation, the obtained compound shows increment in molecular weight for only 16. It means only one oxygen atom is added here. This condition is fulfilled by only aldehyde which on oxidation gives acid. \(\mathrm{RCHO} \stackrel{[\mathrm{o}]}{\longrightarrow} \mathrm{RCOOH}\) Hence, the original compound must be \(\underset{\text { mol. wt. } 44}{\mathrm{CH}_{3} \mathrm{CHO}} \stackrel{[\mathrm{O}]}{\longrightarrow} \underset{\text { mol. wt. } 60}{\mathrm{CH}_{3} \mathrm{COOH}}\)
323620
Which factors will increase the reactivity of \(>\mathrm{C}=\mathrm{O}\) group? (i) Presence of a group with positive inductive effect (ii) Presence of a group with negative inductive effect (iii) Presence of large alkyl group
1 Only (i)
2 Only (ii)
3 Both (i) & (iii)
4 Both (ii) & (iii)
Explanation:
Reactivity of carbonyl compounds can be increased by increase in number of -I effect groups.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323621
Ketones
where, \({\text{R}} = {\text{R}}' = \) alkyl group can be obtained in one step by
1 hydrolysis of esters
2 oxidation of primary alcohols
3 oxidation of secondary alcohols
4 reaction of acid halides with alcohols.
Explanation:
Secondary alcohols, on oxidation yield ketones.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323622
In the reaction, \({\text{C}}{{\text{H}}_3} - {\text{CH}} = {\text{CH}} - {\text{CHO}}\xrightarrow[{{\text{agent}}}]{{{\text{Oxidizing}}}}\) \(\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}-\mathrm{COOH}\), the oxidising agent can be
In oxidation with Benedict solution, double bond remains intact.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323623
A compound containing only carbon, hydrogen, and oxygen has a molecular weight of 44 . On complete oxidation, it is converted into a compound of molecular weight 60 . The original compound is
1 An aldehyde
2 An acid
3 An alcohol
4 An ether
Explanation:
On complete oxidation, the obtained compound shows increment in molecular weight for only 16. It means only one oxygen atom is added here. This condition is fulfilled by only aldehyde which on oxidation gives acid. \(\mathrm{RCHO} \stackrel{[\mathrm{o}]}{\longrightarrow} \mathrm{RCOOH}\) Hence, the original compound must be \(\underset{\text { mol. wt. } 44}{\mathrm{CH}_{3} \mathrm{CHO}} \stackrel{[\mathrm{O}]}{\longrightarrow} \underset{\text { mol. wt. } 60}{\mathrm{CH}_{3} \mathrm{COOH}}\)
323620
Which factors will increase the reactivity of \(>\mathrm{C}=\mathrm{O}\) group? (i) Presence of a group with positive inductive effect (ii) Presence of a group with negative inductive effect (iii) Presence of large alkyl group
1 Only (i)
2 Only (ii)
3 Both (i) & (iii)
4 Both (ii) & (iii)
Explanation:
Reactivity of carbonyl compounds can be increased by increase in number of -I effect groups.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323621
Ketones
where, \({\text{R}} = {\text{R}}' = \) alkyl group can be obtained in one step by
1 hydrolysis of esters
2 oxidation of primary alcohols
3 oxidation of secondary alcohols
4 reaction of acid halides with alcohols.
Explanation:
Secondary alcohols, on oxidation yield ketones.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323622
In the reaction, \({\text{C}}{{\text{H}}_3} - {\text{CH}} = {\text{CH}} - {\text{CHO}}\xrightarrow[{{\text{agent}}}]{{{\text{Oxidizing}}}}\) \(\mathrm{CH}_{3}-\mathrm{CH}=\mathrm{CH}-\mathrm{COOH}\), the oxidising agent can be
In oxidation with Benedict solution, double bond remains intact.
CHXII12:ALDEHYDES KETONES AND CARBOXYLIC ACIDS
323623
A compound containing only carbon, hydrogen, and oxygen has a molecular weight of 44 . On complete oxidation, it is converted into a compound of molecular weight 60 . The original compound is
1 An aldehyde
2 An acid
3 An alcohol
4 An ether
Explanation:
On complete oxidation, the obtained compound shows increment in molecular weight for only 16. It means only one oxygen atom is added here. This condition is fulfilled by only aldehyde which on oxidation gives acid. \(\mathrm{RCHO} \stackrel{[\mathrm{o}]}{\longrightarrow} \mathrm{RCOOH}\) Hence, the original compound must be \(\underset{\text { mol. wt. } 44}{\mathrm{CH}_{3} \mathrm{CHO}} \stackrel{[\mathrm{O}]}{\longrightarrow} \underset{\text { mol. wt. } 60}{\mathrm{CH}_{3} \mathrm{COOH}}\)
