Tetra hydroborate ion is the source of_______________?
A. proton
B. H+
C. both A & amp; B
D. H-
Submitted by :- Jamil Ahmed
CHEMISTRY
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Acetal on acid hydrolysis generates__________________?
A. Alcohol
B. Ketone
C. Both A & B
D. None of the above
Submitted by :- Jamil Ahmed
Oxidation of primary alcohol gives________________?
A. ketone
B. Aldehyde
C. Alkene then – COOH
D. Ester
Submitted by :- Jamil Ahmed
Which of the following will not give addition reaction with NaHSO3________________?
A. HCHO
B. CH3CHO
C. CH3-CH2-CHO
D. None of the above
Submitted by :- Jamil Ahmed
Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?
A. Nylon 66
B. urotropine
C. Aniline formaldehyde plastic
D. Bakelite
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
Ketones are comparatively less reactive than aldehyde. It is due to_______________?
A. alkyl groups are electron donating
B. steric hindrance
C. Both A and B
D. none
Submitted by :- Jamil Ahmed
Which of the following do not give aldol condensation reactions ?
A. formaldehyde
B. acetaldehyde
C. dimethyl ketone
D. propionaldehyde
Submitted by :- Jamil Ahmed
Which of the following reagents will react with both aldehydes and ketones ?
A. Grignard reagent
B. Tollens reagent
C. Fehling’s reagent
D. Benedicts reagent
Submitted by :- Jamil Ahmed