Question

Acetophenone when reacted with a base, $${C_2}{H_5}ONa,$$   yields a stable compound which has the structure

A. Aldehyde and Ketone mcq option image  
B. Aldehyde and Ketone mcq option image
C. Aldehyde and Ketone mcq option image
D. Aldehyde and Ketone mcq option image
Answer :   Aldehyde and Ketone mcq option image
Solution :
Aldehydes and ketones with $$\alpha $$ - hydrogen atom, when reacted with a base yields aldol which on heating loses water molecule to give $$\alpha ,\beta $$ -unsaturated aldehydes or ketones. This reaction is called aldol condensation reaction.
Aldehyde and Ketone mcq solution image
Aldehyde and Ketone mcq solution image

Releted MCQ Question on
Organic Chemistry >> Aldehyde and Ketone

Releted Question 1

The reagent with which both acetaldehyde and acetone react easily is

A. Fehling’s reagent
B. Grignard reagent
C. Schiff’s reagent
D. Tollen’s reagent
Releted Question 2

The Cannizzaro reaction is not given by

A. trimethylacetaldehye
B. acetaldehyde
C. benzaldehyde
D. formaldehyde
Releted Question 3

The compound that will not give iodoform on treatment with alkali and iodine is :

A. acetone
B. ethanol
C. diethyl ketone
D. isopropyl alcohol
Releted Question 4

Polarisation of electrons in acrolein may be written as

A. $$\mathop {C{H_2}}\limits^{{\delta ^ - }} = CH - \mathop {CH}\limits^{{\delta ^ + }} = O$$
B. $$\mathop {C{H_2}}\limits^{{\delta ^ - }} = CH - CH = \mathop O\limits^{{\delta ^ + }} $$
C. $$\mathop {C{H_2}}\limits^{{\delta ^ - }} = \mathop {CH}\limits^{{\delta ^ + }} - CH = O$$
D. $$\mathop {C{H_2}}\limits^{{\delta ^ + }} = CH - CH = \mathop O\limits^{{\delta ^ - }} $$

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Aldehyde and Ketone


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