Building Materials MCQs

Question 1

Pick up the correct characteristic of Pyroxene from the following :

Accepted Answer

All the above.

Answer

It forms octagonal crystals

Answer

It converts to chlorine by hydration

Answer

Its density is 2.3 to 3.6 g/cm2

Question 2

Chlorite, a green colour mineral is mainly derived from the decomposition of

Accepted Answer

augite

Answer

biotite

Answer

horn blende

Answer

All of these.

Question 3

Pick up the correct statement from the following :

Accepted Answer

All the above.

Answer

Horn blende mineral is brittle

Answer

Muscovite is also known as white mica and potashmica

Answer

Biotite is also known as blackmica

Question 4

Dorry's testing machine is used for

Accepted Answer

hardness test of stone

Answer

crushing test of stone

Answer

impact test of stone

Answer

water absorption test.

Question 5

Pick up the correct statement from the following :

Accepted Answer

All the above.

Answer

The free quartz suddenly expands at a temperature lower than 600?C

Answer

The lime stone resists fire upto about 800?C and at higher temperature it splits int6 CaO and CO2

Answer

The sand stone with silicates resist a fire in a better way

Question 6

The wedging is adopted for quarrying costly stratified rock such as

Accepted Answer

All the above.

Answer

laterite

Answer

marble

Answer

limestone

Question 7

The stones obtained by blasting are used as

Accepted Answer

All the above.

Answer

ballast in railways

Answer

aggregates for concrete

Answer

roadmetal

Question 8

Quartzite, a metamorphic stone is

Accepted Answer

All the above.

Answer

hard

Answer

brittle

Answer

crystalline

Question 9

The melting point of silica is :

Accepted Answer

1730?C

Answer

1570?C

Answer

1630?C

Answer

1850?C.