Question

The number of chlorine (Cl) atoms in the structure of DDT molecule is

• A. 4
• B. 3
• C. 2
• D. 5

Hint:

Structure of DDT: \(\text{(Cl-C}_6\text{H}_4\text{)}_2\text{CH-CCl}_3\). Count: 2 Cl on rings + 3 Cl on chain = 5 Cl.

Answer 1

The Correct Option is D

Step 1: Determine the Structure of DDT:
DDT stands for p,p'-Dichlorodiphenyltrichloroethane. Chemical name: 2,2-bis(4-chlorophenyl)-1,1,1-trichloroethane.
Step 2: Count Chlorine Atoms:
- The "Trichloroethane" part implies 3 Chlorine atoms on the C-1 carbon. - The "Dichlorodiphenyl" part implies 2 Chlorine atoms, one on each of the two phenyl rings (at para positions). Total Chlorine atoms = \(3 + 2 = 5\). Final Answer:
5.