Building Materials
Strength of cement concrete primarily depends upon

Quantity of cement
Quantity of aggregate
Water-cement ratio
Quality of water

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Building Materials
A queen closer is a

Brick having the same length and depth as the other bricks but half the breadth
Brick laid with its breadth parallel to the face or direction of wall
Brick laid with its length parallel to the face or direction of wall
Brick with half the width at one end and full width at the other

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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:

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

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