Full name of DDT is:(A) 1,1,1-trichloro-2,2-bis(p-chlorophenyl) ethane(B) 1,1-dichloro-2,2-diphenyl trimethylethane(C) 1,1-dichloro-2,2-diphenyl trichloroethane(D) None of these

The full name of DDT is (A) 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane. Here’s the explanation:

Explanation:
Understanding DDT: DDT stands for Dichloro-Diphenyl-Trichloroethane. It is a synthetic pesticide that was widely used for agricultural and vector control purposes.

Chemical Structure:

DDT has a specific molecular structure that includes:
Two phenyl (benzene) groups.
Three chlorine atoms attached to the ethane backbone.
Breaking Down Option A:

1,1,1-trichloro: This indicates three chlorine atoms are attached to the first carbon atom of the ethane.
2,2-bis(p-chlorophenyl): This indicates that there are two phenyl groups, each substituted with a chlorine atom, on the second carbon of the ethane.
ethane: This is the basic hydrocarbon backbone.
Other Options:
(B): 1,1-dichloro-2,2-diphenyl trimethylethane: Incorrect because it suggests two phenyl groups and trimethyl groups that are not present in DDT.

(C): 1,1-dichloro-2,2-diphenyl trichloroethane: Incorrect as it mislabels the chlorine and structure of DDT.

(D): None of these: Incorrect since option (A) is correct.

Conclusion:
The correct full name of DDT is 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane. Thus, the answer is (A).