DDT NEET Questions

Organic Chemistry - Organic Compounds Containing Halogens

DDT MCQ Questions


7.
What is the mode of action of DDT on insects?
A.
It disrupts their nervous system by affecting sodium channels
B.
It destroys their reproductive system
C.
It poisons their blood cells
D.
It damages their digestive enzymes
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ANSWER :
A. It disrupts their nervous system by affecting sodium channels
8.
DDT has a strong affinity for which type of environment?
A.
Water environment
B.
Soil environment
C.
Air environment
D.
Marine life
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ANSWER :
A. Water environment
9.
Which of the following is a major environmental impact of DDT use?
A.
Eutrophication
B.
Disruption of aquatic ecosystems
C.
Depletion of the ozone layer
D.
Increased carbon footprint
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ANSWER :
B. Disruption of aquatic ecosystems
10.
Which of the following is a characteristic of DDT’s chemical structure?
A.
Multiple nitrogen atoms attached to a benzene ring
B.
Multiple hydroxyl groups attached to a benzene ring
C.
Multiple chlorine atoms attached to a benzene ring
D.
None of the above
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ANSWER :
C. Multiple chlorine atoms attached to a benzene ring
11.
What is one of the main reasons DDT is no longer used in many countries?
A.
Decrease in health risks
B.
Increased agricultural productivity
C.
Resistance developed by pests to DDT
D.
Reduced environmental effects
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ANSWER :
C. Resistance developed by pests to DDT
12.
Which of the following is an example of an alternative to DDT in pest control?
A.
Carbamates
B.
Organochlorine pesticides
C.
Pyrethroids
D.
None of the above
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ANSWER :
C. Pyrethroids