Top 150+ Solved Pharmaceutical Organic Chemistry 1 MCQ Questions Answer
Q. Aldol condensation will not be observed in……….
a. Chloral
b. Phenyl acetaldehyde
c. Hexanal
d. Ethanol
Q. Which of the following organic compounds exhibits positive Fehling test as well as iodoformtest………….
a. Methanal
b. Ethanol
c. Propanone
d. Ethanal
Q. Which of the following will undergo aldol condensation………
a. Acetaldehyde
b. Propanaldehyde
c. Benzaldehyde
d. Trideuteroacetaldehyde
Q. Acetaldehyde cannot show …………….
a. Iodoform test
b. Lucas test
c. Benedict's test
d. Tollen's test
Q. Benzaldehyde + Sodium hydroxide
a. Benzyl alcohol
b. Benzoic alcohol
c. Hydrobenzamide
d. Cinnamic acid
Q. Benzyl alcohol and sodium benzoate is obtained by the action of sodium hydroxide on benzaldehyde.This reaction is known as ……………
a. Perkin’s reaction
b. Cannizzaro’s reaction
c. Sandmeyer’s reaction
d. Claisen condensation
Q. To distinguish between formaldehyde and acetaldehyde, we require……….
a. Tollen's reagent
b. Fehling's solution
c. Schiff's reagent
d. Caustic soda solution
Q. Which of the following will not give iodoform test?
a. Ethanal
b. Ethanol
c. 2-propanone
d. 3-pentanon
Q. Which of the following will not give the iodoform test ?
a. Acetophenone
b. Ethanal
c. Benzophenone
d. Ethanol
Q. Haloform test is given by the following substance……………
a. HCHO
b. (CH3)2 CO
c. CH3OCH3
d. CH3CH2Cl
Q. Dimethyl ketones are usually characterized through………….
a. Tollen's reagent
b. Iodoform test
c. Schiff's test
d. Benedict's reagent
Q. If formaldehyde and KOH heated then we gets,
a. Acetylene
b. Methane
c. Methyl alcohol
d. Ethyl formate
Q. Acetaldehyde reacts with C2H5 MgCl the final product is…………
a. An aldehyde
b. A ketone
c. A primary alcohol
d. A secondary alcohol
Q. Aldol condensation of acetaldehyde involves the formation of which of the following intermediate?
a. Acetate ion
b. A carbanion
c. A carbonium ion
d. A free radical
Q. Aromatic aldehyde undergo disproportionation in presence of sodium or potassium hydroxide to givecorresponding alcohol and acid. The reaction is known as …………..
a. Wurtz's reaction
b. Cannizzaro reaction
c. Friedel-Craft's reaction
d. Claisen reaction