Chemistry MCQS

931. Oxidation of primary alcohol gives?
A. ketone
B. Aldehyde
C. Alkene then – COOH
D. Ester

932. Nucleophilic addition reactions are catalyzed?
A. Acid
B. Base
C. Both A and B
D. None

933. Acetal on acid hydrolysis generates?
A. Alcohol
B. Ketone
C. Both A & B
D. None of the above

934. Tetrahydroborate ion is the source of?
A. proton
B. H+
C. both A & B
D. H-

935. Dry distillation of calcium acetate results in the formation of?
A. formaldehyde
B. acetaldehyde
C. methane
D. acetone

936. Cannizaro’s reaction takes place through the transfer of ________ from complex anion?
B. Hydride ion
A. Hydrogen ion
C. Oxide ion
D. Methoxide ion

937. Iodoform test can be used to distinguish between_________________?
A. Ethanol and methanol
B. Acetaldehyde and methanal
C. Acetone and diethyl ketone
D. All of the above

938. Which of the following will have the highest boiling point?
A. Methanol
B. Ethanal
C. Propanal
D. Hexanone

939. The carbon atom of carbonyl group is__________________?
A. sp hybridized
B. sp2 hybridized
C. sp3 hybridized
D. dsp2 hybridized

940. Formalin is _ solution of formaldehyde in water?
A. 10%
B. 20%
C. 40%
D. 60%