971. Acetone reacts with HCN to form a cyanohydrin. It is an example of________________?
A. electronphilic addition
B. electrophilic substitution
C. nucleophilic addition
D. nucleophilic substitution

972. Which of the following reactions may be associated with aldehyde and ketone ?
A. nucleophile addition
B. polymerization
C. oxidation
D. all of the above

973. Which of the following reagents will react with both aldehydes and ketones ?
A. Grignard reagent
B. Tollens reagent
C. Fehlings reagent
D. Benedicts reagent

974. Which of the following do not give aldol condensation reactions ?
A. formaldehyde
B. acetaldehyde
C. diemthyl ketone
D. propionaldehyde

975. Formaldehyde and lactose are combined to produce throat lozenges named as__________________?
A. formamint
B. lactomint
C. aldomint
D. formalactose

976. Formula of haloform is_________________?
A. HCOX
B. CX4
C. CHX3
D. CH3X

977. Formalin consists of mixture of formaldehyde methyl alcohol and water Percentage of water in it is________________?
A. 60%
B. 50%
C. 52%
D. 8%

978. On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?
A. pink
B. black
C. yellow
D. brick red

979. Aldehyde and ketone have same general formula for homologous series_________________?
A. CnH2nO2n
B. CnH2n
C. CnH2nO
D. CnH2nOn+1

980. Ethanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _________ as promoter?
A. PdCl2
B. Cu2Cl2
C. CuCl2
D. PbCl2