Question

Given below are two statements: Assertion (A): From the construction point of view, the open well may be classified into three types: well with impervious lining, well with pervious lining and well with no lining. Reason (R): The impervious lining provides most stable and useful type of well for obtaining water supply.

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct but R is not the correct explanation of A
• C. A is correct but R is not correct
• D. A is not correct but R is correct

Hint:

In Assertion-Reason questions, both statements may be true, but the reason must directly explain the assertion.

Answer 1

The Correct Option is B

Concept:
Open wells may be classified on the basis of construction and lining.

Step 1: Check Assertion.
Open wells may have impervious lining, pervious lining or no lining. \[ A \text{ is correct} \]

Step 2: Check Reason.
Impervious lining gives stability to well walls and is useful for obtaining water supply. \[ R \text{ is correct} \]

Step 3: Check explanation.
Reason describes the usefulness of impervious lining, but it does not explain why wells are classified into three types. \[ R \text{ is not the correct explanation of } A \] \[ \therefore \text{Correct Answer is (B)} \]