Question 1

Concrete gains its strength due to

Accepted Answer

hydration reaction

Answer

none of these

Answer

endothermic exam

Answer

osmotic pressure

Question 2

M20 corresponds to

Accepted Answer

1:1.5:3

Answer

1:4:8

Answer

1:1:2

Answer

none of these

Question 3

A finisher attempts to finish the fresh concrete by striking off excess concrete and bringing to same grade

Accepted Answer

screeding

Answer

screening

Answer

levelling

Answer

tamping

Question 4

Inert material in a concrete

Accepted Answer

aggregate

Answer

water

Answer

admixture

Answer

cement

Question 5

sugar is a

Accepted Answer

retarder

Answer

accelerator

Answer

air entraining agent

Answer

none of these

Question 6

steam curing is done for

Accepted Answer

mass production of precast units

Answer

beams

Answer

foundations

Answer

colums

Question 7

Minimum period before striking formwork for soffit to beams

Accepted Answer

7days

Answer

24hour

Answer

21days

Answer

3days

Question 8

volume of one bag of cement

Accepted Answer

35litres

Answer

33litres

Answer

20litres

Answer

10litres

Question 9

height of slump mould

Accepted Answer

30cm

Answer

12cm

Answer

25cm

Answer

50cm

Question 10

slump test is used to determine workability of

Accepted Answer

concrete

Answer

clay

Answer

cement

Answer

sand

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