CH3—CHO + HCN → A. Compound A on hydrolysis gives:
CH3—CH(OH)—COOH
CH3—CH2—CH2—NH2
CH3—CO—COOH
CH3—CH2—COOH
Which of the following does not undergo Cannizaro's reaction ?
Benzaldehyde
2-methylpropanal
p-methoxybenzaldehyde
2, 2-dimethylpropanal
An important industrial solvent, also a laboratory reagent called 2-butanone is nothing but:
methyl ethyl ketone
methyl propyl ketone
dimethyl ketone
diethyl ketone
Which one of the following compound reacts with chlorobenzene to produce DDT ?
Acetaldehyde
Nitrobenzene
m-chloroacetaldehyde
Trichloroacetaldehyde
Conversion of benzaldehyde to 3-phenylprop-2-en-1-oic acid is:
Perkin condensation
Claisen condensation
oxidative addition
Aldol condensation
By combining the two calcium salts of carboxylic acids we are preparing 2-butanone. Find the correct pair of the following:
calcium formate + calcium propanoate
calcium acetate + calcium propanoate
calcium acetate + calcium acetate
calcium formate + calcium acetate
Which of the following can be used to differentiate between aldehyde and ketone ?
Ammoniacal AgNO3
Ammoniacal AgNO3 in presence of tartarate ion
I2 in the presence of base
Ammoniacal AgNO3 in the presence of citrate ion
Which of the following is used to detect aldehydes?
Millon's test
Tollen's reagent
Neutral ferric chloride solution
Molisch's test
B.
Tollen's reagent
(i) Millon's test : used to detect proteins.
(ii) Neutral FeCl3 solution used to detect phenolic -OH group.
(iii) Molisch's test used to detect carbohydrate.
(iv) Tollen's reagent is ammoniacal AgNO3
Aldehydes reduce it to silver mirror.
∴ Tollen's reagent is used to detect aldehydes.