Iodoform Freons NEET Questions

Organic Chemistry - Organic Compounds Containing Halogens

Iodoform Freons MCQ Questions


7.
Which compound does NOT give iodoform test?
A.
Acetic acid (CH₃COOH)
B.
Acetone (CH₃COCH₃)
C.
Ethanol (CH₃CH₂OH)
D.
Acetaldehyde (CH₃CHO)
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ANSWER :
A. Acetic acid (CH₃COOH)
8.
Iodoform is industrially prepared by the action of:
A.
HI on methanol
B.
Cl₂ and NaOH on methane
C.
I₂ and Na₂CO₃ on ethanol or acetone
D.
KI on chloroform
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ANSWER :
C. I₂ and Na₂CO₃ on ethanol or acetone
9.
Which of the following ketones gives iodoform test?
A.
Diethyl ketone (CH₃CH₂COCH₂CH₃)
B.
Methyl ethyl ketone (CH₃COCH₂CH₃)
C.
Cyclohexanone
D.
Benzophenone (C₆H₅COC₆H₅)
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ANSWER :
B. Methyl ethyl ketone (CH₃COCH₂CH₃)
10.
Among the following, which alcohol does NOT give iodoform test?
A.
Ethanol (CH₃CH₂OH)
B.
Butan-2-ol (CH₃CH(OH)C₂H₅)
C.
Propan-2-ol ((CH₃)₂CHOH)
D.
Methanol (CH₃OH)
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ANSWER :
D. Methanol (CH₃OH)
11.
The general structural feature required for a compound to give iodoform test is:
A.
-NH₂ group only
B.
CH₃-CO- or CH₃-CH(OH)- group
C.
Aromatic ring only
D.
-COOH group only
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ANSWER :
B. CH₃-CO- or CH₃-CH(OH)- group
12.
Acetone reacts with I₂ in the presence of NaOH to give:
A.
CHI₃ + CH₃COONa + NaI + H₂O
B.
CH₃I + acetone
C.
CH₂I₂ + CH₃CHO
D.
Acetic acid only
😑 View Answer Rough Work Error
ANSWER :
A. CHI₃ + CH₃COONa + NaI + H₂O