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Question 1: The carbon atom of the carbonyl group is:
A) Sp
B) sp2
C) Sp3)
D) Sp3d
Explanation: b) sp2
Question 2: Dry heating of calcium acetate will give:
A) Acetic acid
B) Acetone
C) Ethanol
D) Acetaldehyde
Explanation: Acetone
Question 3: Tollens' reagent is:
A) alkaline mercuric chloride
B) alkaline potassium permanganate
C) ammonium citrate
D) ammonium silver nitrate
Explanation: ammonium silver nitrate
Question 4: Which statement is incorrect in the case of acetaldehyde and acetone?
A) Both react with HCN
B) Both give iodoform test
C) Both can be reduced into alcohols
D) Both react with NaOH to form polymer
Explanation: Both react with NaOH to form polymer
Question 5: When formaldehyde is treated with ammonia, the compound formed is
A) Methylamine
B) hexamethylene tetramine
C) formaldehyde ammonia
D) formalin
Explanation: Methylamine
Question 6: A plastic bakelite is a compound of phenol with:
A) acetal
B) Ethnal
C) Methnal
D) Acetone
Explanation: Methnal
Question 7: Formaldehyde can be distinguished from acetaldehyde by the use of:
A) Schiff's reagent
B) Tollens reagent
C) Fehlings solution
D) Iodoform test
Explanation: Iodoform test
Question 8: Which of the following would undergo aldol condensation
A) Propionaldehyde
B) Pivaldehyde
C) Chloral
D) Formaaldehyde
Explanation: Propionaldehyde
Question 9: A natural compound (X), C4H802, reduces Fehling's solution, liberates hydrogen when
Treated with sodium metal and gives a positive iodoform test. The structure of (X) is
A) CH3CHOHCH2CHO/div>
B) HOCH2CH2CHO
C) CH3COCH2CH2OH
D) CH3COCH2CHO
Explanation: CH3COCH2CH2OH
Question 10: A carbonyl compound with molecular weight 86, does not reduce Fehling's solution but forms crystalline bisulphite derivatives and gives iodoform test. The possible compound can be:
A) pentan-2-one and pentan-3-one
B) pentan-3-one and 3-methyl butan-2-one
C) pentanone and pentanal
D) pentan-2-one and methyl butan-2-one
Explanation: pentan-2-one and methyl butan-2-one
Question 11: A compound does not react with 2,4-dinitrophenyl hydrazine, compound is
A) Acetaldehyde
B) Acetone
C) Methanol
D) Ethyl methyl ketone
Explanation: Methanol
Question 12: A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of α-hydroxy acid. The carbonyl compound is
A) diethyl ketone
B) formaldehyde
C) acetone
D) acetaldehyde
Explanation: acetaldehyde
Question 13: Ketones can be prepared by
A) heating calcium propionate with calcium formate
B) action of dialkyl cadmium on acid chloride
C) hydrolysis of n-propylidene chloride with alkali
D) dry distillation of fused calcium acetate
Explanation: dry distillation of fused calcium acetate
Question 14: Acetone molecules condensation with conc. Sulphuric acid can give
A) mesityloxide
B) mesitylene
C) croton aldehyde
D) phorone
Explanation: mesitylene
Question 15: A mixture of benzaldehyde and formaldehyde on heating. with aqueous NaOH gives
A) benzyl alcohol and sodium fonnate
B) benzyl alcohol and methyl aloohol
C) sodium benzoate and sodium formate
D) sodium benzoate and methyl alcohol
Explanation: sodium benzoate and sodium formate
Question 16: The most reactive compound towards formation of cyanohydrin on treatment with KCN
followed by acidification is
A) p-hydroxy benzaldehyde
B) benzaldehyde
C) p-nitrobenzaldehyde
D) phenyl acetaldehyde
Explanation: p-nitrobenzaldehyde
Question 17: Ozonolysis of C7H14 gave 2-methyl pentan-3-0ne. The alkene is
A) 2-ethyl-3-methyl but-I-ene
B) 2-methyl-3-ethyl but-3-ene
C) 2,5-dimethyl-3,4-diethyl hex-3-ene
D) 2-methyl-3-ethyl but-I-ene
Explanation: 2-ethyl-3-methyl but-I-ene
Question 18: Out of butane, butan-l-ol, butanal and butanone, the decreasing order of their boiling point is
A) butane> butanol> butanal > butanone
B) butanol> butane> butanal > butanone
C) butanone > butanal > butanol> butane
D) butanol> butanal > butanone > butane
Explanation: butanol> butanal > butanone > butane
Question 19: Formic acid is not a representative member of the carboxylic acids because:
A) it is a gas
B) it is the first member of the series
C) it does not contain an alkyl group
D) it contains an aldehydic group while the other acids do. not have the aldehydic group
Explanation: d) it contains an aldehydic group while the other acids do. not have the aldehydic group
Question 20: Which of the following will not undergo HVZ reaction?
A) 2,2-Dimethyl propanoic acid
B) Propanoic acid
C) Acetic acid
D) 2-Methyl propanoic acid
Explanation: 2,2-Dimethyl propanoic acid
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Total Questions Attempted: 0
Correct Answers: 0
Wrong Answers: 0
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