JEE MAIN - Physics (2022 - 29th July Morning Shift - No. 7)

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Clothes containing oil or grease stains cannot be cleaned by water wash.

Reason (R): Because the angle of contact between the oil/grease and water is obtuse.

In the light of the above statements, choose the correct answer from the option given below.

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are true but (R) is not the correct explanation of (A)

(A) is true but (R) is false

(A) is false but (R) is true

Due to obtuse angle of contact the water doesn't wet the oiled surface properly and cannot wash it also.

$$\Rightarrow$$ Assertion is correct and Reason given is a correct explanation.