Building Materials Multiple choice questions for practice

Civil engineering Questions and Answers :- building materials

Building materials Practice questions ans answers

1. The rocks formed by gradual deposition, are called

sedimentary rocks

igneous rocks

metamorphic rocks

none of these

2. Wrought iron contains carbon about

1.5% to 5.5%

0.5% to 1.75%

0.1% to 0.25%

none of these

3. Kaolin is chemically classified as

metamorphic rock

argillaceous rock

calcareous rock

silicious rock.

4. Polymerization helps to improve the property of

strength

rigidity

elasticity

all of these

5. Quartzite is a

metamorphic rock

argillaceous rock

calcareous rock

silicious rock.

6. In the method of condensation polymerization,

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

all the above.

7. Bitumen in

solid state, is called asphalt

semi fluid state, is called mineral tar

fluid state, is called petroleum

all the above.

8. Pick up the polymineralic rock from the following:

Granite

Pure gypsum

Magnesite

Quartz sand

9. Pick up the hypabyssal rock from the following:

Granite

Dolerite

Basalt

All the above.

10. Sand stone is

sedimentary rock

metamorphic rock

igneous rock

volcanic rock

11. The rocks which are formed due to cooling of magma at a considerable depth from earth’s surface are called

Plutonic rocks

Hypabyssal rocks

Volcanic rocks

Igneous rocks.

12. For the manufacture of Portland cement, the proportions of raw materials used, are

lime 63% ; silica 22% ; other ingredients 15%

lime 22% ; silica 63% ; other ingredients 15%

silica 40% ; lime 40% ; other ingredients 20%

silica 70% ; lime 20% ; other ingredients 10%.

13. Stainless steel contains

18% of chromuim and 8% nickel

8% of chromium and 18% of nickel

12% of chromium and 36% of nickel

36% of chromium and 12% of nickel.

14. Pick up the correct statement from the following:

For thin structures subjected to wetting and drying, the water cement ratio should be 0.45

For mass concrete structures subjected to wetting and drying, the water ratio should be 0.55

For thin structures which remain continuously under water, the water-cement ratio by weight should be 0.55

All the above.

15. Due to attack of dry rot, the timber

cracks

shrinks

reduces to powder

none of these

16. The initial setting time of lime-pozzolana, is

30 minutes

60 minutes

90 minutes

120 minutes

17. In a mortar, the binding material is

cement

sand

surkhi

cinder

18. The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout

the monsoon

the winter

the summer

none of these

19. Bitumen felt

is used as water proofing material

is used as damp proofing material

is made from bitumen and hessian fibres

all the above.

20. Elastomers can extend upto

five times their original dimensions

seven times their original dimensions

ten times their original dimensions

three times their original dimensions.

21. Gniess is obtained from

igneous rocks

metamorphic rocks

sedimentary rocks

sedimentary metamorphic rocks.

22. Lacquer paints

are generally applied on structural steel

are less durable as compared to enamel paints

consist of resin and nitro-cellulose

all the above.

23. Ultimate strength to cement is provided by

Tricalcium silicate

Di-calcium silicate

Tri-calcium aluminate

Tetra calcium alumino ferrite.

24. Wrought iron contains carbon upto

0.25%

1.0%

1.5%

2%.

25. In the cement the compound quickest to react with water is

Tricalcium aluminate

Tetra-calcium alumino-ferrite

Tricalcium silicate

Dicalcium silicate


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