# Assertion A : When rock conditions are favorable, it will not be necessary to take up concrete lining concurrently with the driving operations till the full length of the tunnel has been driven through rock. Reason R : A tunnel through rock, hard or soft, does not need any concrete lining _____ ? with Answer - Civil Engineering Mcqs | TestPrep

> Solved MCQ: Assertion A : When rock conditions are favorable, it will not be necessary to take up concrete lining concurrently with the driving operations till the full length of the tunnel has been driven through rock. Reason R : A tunnel through rock, hard or soft, does not need any concrete lining _____ ? Correct Answer: C. A is true but R is false. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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# Assertion A : When rock conditions are favorable, it will not be necessary to take up concrete lining concurrently with the driving operations till the full length of the tunnel has been driven through rock. Reason R : A tunnel through rock, hard or soft, does not need any concrete lining _____ ?

Direct Answer & Quick Reference

The correct option is **C. A is true but R is false**.

A. Both A and R are true and R is the correct explanation of A

B. Both A and R are true but R is not the correct explanation of A

C. A is true but R is false **(Correct Answer)**

D. A is false but R is true

✨ Explain with AI

Verified Key: C. A is true but R is false
Solved by 4,667+ students

Verified against official examination board answer keys and standard curriculum textbooks.

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