Building Materials
The plywood

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

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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
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

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Building Materials
Acrylic sheets

Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness
Are generally unaffected by most household detergents
Possess the light transmission rate of 93%
All of these

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Building Materials
In the method of condensation polymerization,

All of these
Low-molecular substances are removed from the high molecular substance
The reaction proceeds with an evolution of ammonia
The reaction proceeds with an evolution of hydrogen chloride

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