Iodoform Freons NEET Questions

Organic Chemistry - Organic Compounds Containing Halogens

Iodoform Freons MCQ Questions


13.
When ethanol is treated with I₂/NaOH, the products formed are:
A.
Ethanal and water only
B.
Acetone and iodine
C.
Iodoethane and sodium hydroxide
D.
Iodoform, sodium formate, sodium iodide and water
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ANSWER :
D. Iodoform, sodium formate, sodium iodide and water
14.
Which of the following does NOT respond to iodoform test?
A.
Acetaldehyde (CH₃CHO)
B.
Isopropyl alcohol ((CH₃)₂CHOH)
C.
Diethyl ether (CH₃CH₂OCH₂CH₃)
D.
Acetophenone (C₆H₅COCH₃)
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ANSWER :
C. Diethyl ether (CH₃CH₂OCH₂CH₃)
15.
Iodoform was earlier used as:
A.
Antiseptic
B.
Pesticide
C.
Refrigerant
D.
Anaesthetic
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ANSWER :
A. Antiseptic
16.
The antiseptic property of iodoform is due to:
A.
Presence of three iodine atoms only
B.
Carbon content in iodoform
C.
Iodoform itself being toxic to bacteria
D.
Liberation of free iodine on contact with skin
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ANSWER :
D. Liberation of free iodine on contact with skin
17.
Why has iodoform been replaced by other iodine-containing antiseptic formulations?
A.
It is not effective against bacteria
B.
It is too expensive to manufacture
C.
Due to its objectionable (unpleasant) smell
D.
It dissolves in water rapidly
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ANSWER :
C. Due to its objectionable (unpleasant) smell
18.
The melting point of iodoform is approximately:
A.
0°C
B.
119°C
C.
55°C
D.
180°C
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ANSWER :
B. 119°C