Question

Match the items in Group-I with corresponding appropriate items in Group-II. 
Group-I                        Group-II
P. Cs                           1. Siderophile 
Q. Au                         2. Chalophile 
R. Cd                          3. Atmophile 
S. Rn                          4. Lithophile 
 

• A. P-4, Q-1, R-2, S-3
• B. P-4, Q-3, R-1, S-2
• C. P-3, Q-1, R-2, S-4
• D. P-2, Q-1, R-4, S-3

Hint:

Siderophiles bond with iron, lithophiles with the earth's crust, chalophiles with sulfur, and atmophiles with atmospheric gases.

Answer 1

The Correct Option is A

In this question, we are matching elements in Group I with their correct classification in Group II based on their affinity to different types of elements in nature. These classifications are related to the geochemical behavior of the elements.
- Cs (P): Cesium is an alkali metal and has a high affinity for lithosphere elements like silicon and oxygen, making it a lithophile. Hence, P corresponds to 4.
- Au (Q): Gold is a siderophile, meaning it has a strong affinity for iron and tends to associate with metals in the earth's core. Therefore, Q corresponds to 1.
- Cd (R): Cadmium is a chalophile, which prefers to bond with sulfur in sulfide minerals. Hence, R corresponds to 2.
- Rn (S): Radon, a noble gas, is highly atmophilic, meaning it is associated with gases in the atmosphere. Thus, S corresponds to 3.
Therefore, the correct matching is (A): P-4, Q-1, R-2, S-3.