Building Materials
Name the type of cement from the following for canal linings:

Quick setting cement
Pozzolana cement
Rapid hardening cement
Sulphate resisting cement

ANSWER DOWNLOAD EXAMIANS APP

Building Materials
The basic purpose of a retarder in concrete is

To increase the initial setting time of cement paste in concrete
To improve the workability of concrete mix
To render the concrete more water tight
To decrease the initial setting time of cement paste in concrete

ANSWER DOWNLOAD EXAMIANS APP

Building Materials
Asbestos

Is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3)
All of these
Is a natural fibrous mineral substance
Contains iron oxide and alumina

ANSWER DOWNLOAD EXAMIANS APP