Building Materials
The main function of alumina in brick earth is

To make the brick impermeable
To prevent shrinkage
To impart plasticity
To make the brick durable

ANSWER DOWNLOAD EXAMIANS APP

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
A is false but R is true
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

ANSWER DOWNLOAD EXAMIANS APP