Top 150+ Solved Pharmaceutical Organic Chemistry 1 MCQ Questions Answer
Q. During reaction of benzaldehyde with alkali one of the product is…………
a. Phenol
b. Benzyl alcohol
c. Benzene
d. Benzophenone
Q. When two molecules of acetaldehyde condense in the presence of dilute alkali, it forms………….
a. Acetal
b. Sodium formate
c. Aldol
d. Methylene
Q. Acetaldehyde and acetone can be distinguished by……………
a. Molisch test
b. Bromoform test
c. Solubility in water
d. Tollen's test
Q. Aldehyde turns pink with ………….
a. Benedict solution
b. Schiff reagent
c. Fehling solution
d. Tollen's reagent
Q. The reagent with which both aldehyde and acetone react easily is…………….
a. Fehling's reagent
b. Grignard reagent
c. Schiff's reagent
d. Tollen's reagent
Q. Acetal is obtained by reacting in the presence of dry HCl and alcohol with…………..
a. Aldehyde
b. Ketone
c. Ether
d. Carboxylic acid
Q. Which of the following is used to detect aldehydes…………..
a. Million's test
b. Tollen's reagent
c. Neutral ferric chloride solution
d. Molisch's test
Q. Which of the following aldehydes give red precipitate with Fehling solution ?
a. Benzaldehyde
b. Salicylaldehyde
c. Acetaldehyde
d. None of these
Q. Acetaldehyde and Acetone can be distinguished by………..
a. Iododorm test
b. Nitroprusside test
c. Fehling's solution test
d. DNP test
Q. Which of the following will fail to react with potassium dichromate and dilute sulphuricacid……………
a. Ethyl alcohol (ethanol)
b. Acetaldehyde (ethanal)
c. Secondary propyl alcohol (2-propanol)
d. Acetone (propanone)
Q. The key step in cannizzaro’s reaction is the intermolecular shift of ……….
a. Proton
b. Hydride ion
c. Hydronium ion
d. Hydrogen bond
Q. A compound, containing only carbon, hydrogen and oxygen, has a molecular weight of 44. Oncomplete oxidation it is converted into a compound of molecular weight 60. The original compound is ?
a. An aldehyde
b. An acid
c. An alcohol
d. an ether
Q. Which of the following has the most acidic hydrogen?
a. 3-hexanone
b. 2, 4-hexanedione
c. 2, 5-hexanedione
d. 2, 3-hexanedione