Top 150+ Solved Pharmaceutical Organic Chemistry 1 MCQ Questions Answer
Q. Which of the following does not give yellow precipitate with KINaOH…………
a. Acetone
b. Acetaldehyde
c. Benzaldehyde
d. Acetophenone
Q. Which of the following does not turn Schiff's reagent to pink…………
a. Formaldehyde
b. Benzaldehyde
c. Acetone
d. Acetaldehyde
Q. Acetaldehyde and acetone differ in their reaction with…………..
a. Sodium bisulphite
b. Ammonia
c. Phosphorus pentachloride
d. Phenyl hydrazine
Q. The final product formed when acetaldehyde is reduced with sodium and alcohol is…………
a. Ethylene
b. Ethyl alcohol
c. Ethene
d. All of these
Q. The compound obtained by the reduction of propionaldehyde by amalgamated zinc and concentratedHCl is…………….
a. Propanol
b. Propane
c. Propene
d. All of these
Q. Formaldehyde when treated with KOH gives methanol and potassium formate. The reaction is knownas………..
a. Perkin reaction
b. Claisen reaction
c. Cannizzaro reaction
d. Knoevenagel reaction
Q. Acetaldehyde reacts with ……………
a. Electrophiles only
b. Nucleophiles only
c. Free radicals only
d. Both electrophiles and nucleophiles
Q. The typical reactions of aldehyde is………………….
a. Electrophilic addition
b. Nucleophilic substitution
c. Nucleophilic addition
d. Nucleophilic elimination
Q. Which will not give acetamide on reaction with ammonia …………
a. Acetic acid
b. Acetyl chloride
c. Acetic anhydride
d. Methyl formate
Q. The addition of HCN to carbonyl compounds is an example of ……….
a. Nucleophilic substitution
b. Electrophilic addition
c. Nucleophilic addition
d. Electrophilic substitution
Q. Which of the following reagents is used to distinguish acetone and Acetophenone?
a. NaHSO3
b. Grignard reagent
c. Na2SO4
d. NHCl4
Q. The product formed by the reaction of chlorine with benzaldehyde in the absence of a catalystis…………..
a. Chlorobenzene
b. Benzyl chloride
c. Benzoyl Chloride
d. o –Chlorobenzaldehyde
Q. Which one of the following reacts with HCN and Tollen's reagent, but is not oxidised by Fehling'ssolution……………
a. Methanal
b. Ethanal
c. Benzaldehyde
d. Acetone