Building Materials
Assertion A : Paints with white lead base are not recommended for painting of iron works.Reason R : Paints with white lead base do not check rusting of iron.Select your answer according to the coding system given below:

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

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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 with half the width at one end and full width at the other
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

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