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Building Materials and Construction

Assertion A : Normally turpentine oil is recommended as thinner for indoor painting. Reason R : Turpentine oil is costlier than other thinners. Select your answer according to the coding system given below ?

Building Materials and Construction /
Assertion A : Normally turpentine oil is recommended as thinner for indoor painting. Reason R : Turpentine oil is costlier than other thinners. Select your answer according to the coding system given below ?

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
D. A is false but R is true

Assertion A : Normally turpentine oil is recommended as thinner for indoor painting. Reason R : Turpentine oil is costlier than other thinners. Select your answer according to the coding system given below ? Read More »

Building Materials and Construction

The basic purpose of a retarder in concrete is_____________?

Building Materials and Construction /
The basic purpose of a retarder in concrete is_____________?

A. to increase the initial setting time of cement paste in concrete
B. to decrease the initial setting time of cement paste in concrete
C. to render the concrete more water tight
D. to improve the workability of concrete mix

The basic purpose of a retarder in concrete is_____________? Read More »

Building Materials and Construction

Three basic raw materials which are needed in large quantities for production of steel are_______________?

Building Materials and Construction /
Three basic raw materials which are needed in large quantities for production of steel are_______________?

A. iron ore, coal and sulphur
B. iron ore, carbon and sulphur
C. iron ore, coal and lime stone
D. iron ore, carbon and lime stone

Three basic raw materials which are needed in large quantities for production of steel are_______________? Read More »

Building Materials and Construction