Building Materials
Quick setting cement is produced by adding

Aluminium sulphate in very fine powdered form
Pozzolana in very fine powdered form
More amount of gypsum in very fine powdered form
Less amount of gypsum in very fine powdered form

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Building Materials
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 is false but R is true
Both A and R is true and R is the correct explanation of A
Both A and R is true but R is not the correct explanation of A
A is true but R is false

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