Civil Engineering Questions And Answers :: Building Materials And Construction: part2



Civil Engineering : Building Materials And Construction QUESTIONS AND ANSWERS :: part2 : 21 to 25

Following Civil Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2021 and IES 2021 examinations :

21.Which of the following ingredients of the brick earth enables the brick to retain its shape ?

alumina
silica
iron
magnesia

22.The age of a tree can be known by examining

cambium layer
annular rings
medullary rays
heart wood

23.Percentage of silica in a good brick earth lies between

5 to 10%
20 to 30%
50 to 60%
70 to 80%

24.Assertion A : Shishum is used for decorative woodwork. Reason R : Shishum can be polished to an excellent finish. Select your answer according to the coding system given below :

Both A and R are true and R is the correct explanation of A
Both A and R are true but R is not the correct explanation of A
A is true but R is false
A is false but R is true

25.Excess of alumina in brick earth makes the brick

impermeable
brittle and weak
to lose cohesion
to crack and warp on drying

More Building Materials And Construction QUESTIONS AND ANSWERS available in next pages

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