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Physics Class 12th Mechanical Properties of Solids Physics NCERT Exemplar Solutions Class 12th Chapter Nine

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

Assertion (A) : Clothes containing oil grease statins 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.

Option 1 -

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

Option 2 -

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

Option 3 -

(A) is true but (R) is false

Option 4 -

(A) is false but (R) is true

2 Views | Posted 2 months ago

Asked by Shiksha User

1 Answer

Answered by

Vishal Baghel | Contributor-Level 10

2 months ago

Correct Option - 1

Detailed Solution:

Water molecule doesnâ€™t stick with oil/ grease drops due to obtuse angle of contact between then.

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