Building Materials
Soundness of cement is tested by

Le-chatelier apparatus
Vicat's apparatus
None of these
Compressive strength testing apparatus

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Building Materials
Assertion A : Pure lime takes a long time to develop adequate strength.Reason R : Pure lime has slow hardening characteristics.Select your answer according to the coding system given below:

A is true but R is false
Both A and R is true and R is not a correct explanation of A
Both A and R is true and R is correct explanation of A
A is false but R is true

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