Construction Materials Online Test – Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
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Certificate: No
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1 / 30

1. Emulsion paints contain:

a) nitro cotton

b) zinc white

c) white lead

d) polyvinyl acetate

2 / 30

2. The silicious and aluminous minerals themselves, which do not have cementitious qualities but which react with lime in the presence of water at normal temperature to form cementitious compounds, are known as

a) glazed materials

b) porcelains

c) pozzolanic materials

d) carbonaceous materials

3 / 30

3. German silver is an alloy of

a) zinc, lead, and nickel

b) copper, lead, and nickel

c) copper, zinc, and nickel

d) copper, lead, and zinc

4 / 30

4. *A heavy stone is suitable for:

a) arches

b) rubble masonry

c) roads

d) retaining walls

5 / 30

5. The possibility of bleeding, segregation, and laitance is reduced by

a) coloring agent

b) bleeding agent

c) waterproofer

d) air-entraining agent

6 / 30

6. *The oily liquid in which base and pigment are dissolved to form a paint is called

a) thinner

b) filler

c) vehicle

d) none of the above

7 / 30

7. The raw materials having more than 10% proportion in the manufacture of cement are

a) calcium oxide and silica

b) calcium oxide and magnesium oxide

c) magnesium oxide and ferrous oxide

d) silica and ferrous oxide

8 / 30

8. Which one of the following does not belong to endogenous trees?

a) palm

b) bamboo

c) teak

d) cane

9 / 30

9. Lime having high calcium oxide content, which can set and become hard only in the presence of CO2 from the atmosphere, is known as

a) hydraulic lime

b) fat lime

c) quick lime

d) lump lime

10 / 30

10. *Stainless steel metal is an alloy of

a) copper and zinc

b) copper and tin

c) copper and nickel

d) nickel and chromium

11 / 30

11. The percentage of alumina in good brick earth lies between

a) 10-20%

b) 20-30%

c) 30-40%

d) 40-50%

12 / 30

12. *Softening point test (x/y) for bitumen is done at a temperature of upper numeral indicates the softening temperature (x┬░C) while the lower numeral indicates

a) viscosity

b) softening point

c) penetration

d) flash point

13 / 30

13. The color of statutory marble used for sculptor's work is

a) red

b) blue

c) white

d) green

14 / 30

14. A stone is rejected if the water absorption is more than

a) 10%

b) 20%

c) 25%

d) 30%

15 / 30

15. *Elastomers can extend up to

a) ten times their original dimensions

b) seven times their original dimensions

c) five times their original dimensions

d) three times their original dimensions

16 / 30

16. Excess of iron oxide in brick earth causes

a) loss of cohesion

b) decay of bricks

c) the color change i.e. from red to dark blue

d) none of the above

17 / 30

17. *Swelling of bricks is known as

a) bloating

b) lamination

c) chuffs

d) efflorescence

18 / 30

18. Which of the following is not a softwood

a) deodar

b) walnut

c) shisham

d) kali

19 / 30

19. The red color of the brick is due to

a) iron oxide

b) silica

c) magnesia

d) alumina

20 / 30

20. The maximum percentage of water absorption of 1st class bricks in 24 hrs should be limited to

a) 10%

b) 15%

c) 20%

d) 24%

21 / 30

21. *What is the essential constituent of varnish paint?

a) linseed oil

b) resin

c) zinc sulfate

d) soda

22 / 30

22. A good building stone should have

a) all of of the below

b) good appearance and color

c) resistance to fire

d) hardness and toughness

23 / 30

23. Which one of the following does not show good cleavage?

a) calcite

b) mica

c) feldspar

d) silica

24 / 30

24. Excess of silica in brick earth causes

a) loss of cohesion

b) impermeable

c) cracking and warping on drying

d) brittleness

25 / 30

25. For normal consistency, the penetration in Vicat apparatus should be between

a) 35 to 38 mm

b) >40 mm

c) 20 to 30mm

d) 30 to 35mm

26 / 30

26. Muller is concerned with

a) ground the base of paint

b) cohesion & adhesion

c) preparation of paint

d) all of the above

27 / 30

27. *Water absorption of cement should not be more than

a) 5%

b) 10%

c) 15%

d) 20%

28 / 30

28. Lamination of bricks is caused due to

a) entrapped air in the voids of the clay

b) excess lime

c) entrapped water in the voids of the clay

d) excess sand

29 / 30

29. In arches, stratified stones are placed so that their planes are

a) parallel

b) radial

c) perpendicular

d) all of the above

30 / 30

30. For burning clay products such as sewer pipes, the necessary chemical change is

a) dehydration

b) oxidation

c) vitrification

d) none of the above

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Construction Materials Online Test – Paper 2

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