951. Which of the following reaction is not shown by ketones ?
A. reaction with HCN
B. reaction with NaHSO3
C. reaction with 2 4 dinitrophenyl hydrazine
D. reaction with Fehling solution

952. Which of the following substances does not give iodoform test ?
A. acetaldehyde
B. ethyl alcohol
C. methyl alcohol
D. acetone

953. Which of the following compounds will react with Tollens reagent ?
A. CH3-CHO
B. CH3-CH-CH3
C. CH3-COOH
D. CH3-CO-CH2-CH3

954. Cannizzaros reaction is not given by__________________?
A. formaldehyde
B. acetaldehyde
C. benzaldehyde
D. trimethyl acetaldehyde

955. Ketones are comparatively less reactive than aldehdye. It is due to_______________?
A. alkyl groups are electron donating
B. steric hindrance
C. Both A and B
D. none

956. Which of the following is not a use of formaldehyde ?
A. in silvery mirror
B. in making medicine urotropine
C. in making throat lozenges
D. in making acetic acid

957. Which of the following is not a use of acetaldehyde ?
A. formation of phenolic resins
B. formation of mirror
C. antiseptic inhalant
D. formation of throat lozenges

958. Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?
A. Nylon 66
B. urotropine
C. Aniline formaldehyde plastic
D. Bakelite

959. Which of the following will not give addition reaction with NaHSO3________________?
A. HCHO
B. CH3CHO
C. CH3-CH2-CHO
D. None of the above

960. Which of the following compounds has the empirical formula CH2O and reacts with sodium hydroxide ?
A. carbonic acid
B. ethanol
C. acetic acid
D. methanoic acid