MCQs of Introduction to Civil Engineering & Civil Engineering materials (Basic Civil Engineering - 3110004)

Showing 21 to 30 out of 114 Questions

21.

Pick up the volcanic rock from the following

22.

Sapwood consists of

(a)	Innermost annular rings around the pith
(b)	Portion of timber between heartwood and cambium layer
(c)	Thin layers below the bark
(d)	Thin fibre which extends from the pith outwards and holds the annular rings together

23.

Strength of cement concrete primarily depends upon

24.

The main function of alumina in brick earth is

(a)	To impart plasticity
(b)	To make the brick durable
(c)	To prevent shrinkage
(d)	To make the brick impermeable

25.

Cast iron

(a)	Is obtained by purifying pig iron
(b)	Is manufactured in required shapes
(c)	May contain 2 to 5 per cent of carbon with other impurities
(d)	All the above

26.

Which of the following pairs gives a correct combination of the useful and harmful constituents respectively of a good brick earth?

27.

For testing compressive strength of cement, the size of cube used is

28.

When a brick is immersed in water for 24 hours and then dried, if

(a)	No grey or white deposits appear on the surface, the brick is free from soluble salts
(b)	10 percent surface is covered with grey or white deposits, the brick has slight efflorescence
(c)	50 percent surface is covered with grey or white deposits, the brick has serious efflorescence
(d)	All the above

29.

The most commonly used retarder in cement is

30.

Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following

Showing 21 to 30 out of 114 Questions