Building Materials
The standard size of masonry bricks, is

20 cm x 10 cm x 10 cm
19 cm x 9 cm x 9 cm
21 cm x 11 cm x 11 cm
18 cm x 8 cm x 8 cm

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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 true but R is false
A is false but R is true
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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