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:

Both A and R is true and, R is the correct explanation of A
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

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Building Materials
The plywood

Can be spilt in the plane of the panel
Has good strength along the panel only
Has greater impact resistance to blows than ordinary wood
Cannot be bent more easily than ordinary wood of same thickness

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