Building Materials MCQs

Question 1

The presence of original rounded surface on the manufactured piece of timber, is called

Accepted Answer

Wane

Answer

Torn grain

Answer

Diagonal grain

Answer

Chipmark.

Question 2

Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following :

Accepted Answer

All the above.

Answer

absence of sun light

Answer

dampness

Answer

presence of sap

Question 3

The cracks which extend from bark towards the sap wood in the cross section of a tree, are called

Accepted Answer

star shakes

Answer

radial shakes

Answer

heart shakes

Answer

cup shakes.

Question 4

Pick up the correct statement from the following :

Accepted Answer

All the above.

Answer

The substance which consists of one primary chemical, is known as monomer

Answer

The polymer consists of thousands of monomers joined together

Answer

The polymer molecule is called macromolecule

Question 5

Polymerization helps to improve the property of

Accepted Answer

all of these.

Answer

strength

Answer

rigidity

Answer

elasticity

Question 6

The method of addition polymerization is used for itaining :

Accepted Answer

All of these.

Answer

polyethylene

Answer

polypropylene

Answer

polyvinylchloride

Question 7

In the method of condensation polymerization,

Accepted Answer

all the above.

Answer

low-molecular substances are removed from the high molecular substance

Answer

the reaction proceeds with an evolution of ammonia

Answer

the reaction proceeds with an evolution of hydrogen chloride

Question 8

Which one of the following polymers is obtained from ondensation polymerization ?

Accepted Answer

all of these.

Answer

phenol formaldehyde

Answer

melamine-formaldehyde

Answer

carbamide

Question 9

For obtaining vinyl chloride acetate, the method used,

Accepted Answer

co-polymerization

Answer

addition polymerization

Answer

condensation polymerization

Answer

none of these.