Building Materials - Section 4 | Multiple Questions and Answers

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Building Materials - Section 4 Multiple Questions and Answers.

31.	Calcination of iron ores is done

	A.	to remove moisture
	B.	to remove carbonic acid
	C.	by roasting in heaps
	D.	All the above.

32.	Strength of cement concrete primarily depends upon

	A.	quality of water
	B.	quantity of aggregate
	C.	quantity of cement
	D.	water-cement ratio.

33.	Rapid hardening cement contains

	A.	Tri-calcium silicate
	B.	Tri-calcium aluminate
	C.	Tetra-calcium alumino-ferrite
	D.	Dicalcium silicate.

34.	Bitumen emulsion is

	A.	a liquid containing bitumen in suspension
	B.	a paint
	C.	used as anti-corrosive paint
	D.	all the above.

35.	The cast iron when heated to red heat with powdered red haemetite in an oven for increasing its toughness, is converted to

	A.	grey cast iron
	B.	white cast iron
	C.	mottled cast iron
	D.	toughed cast iron.

Read More :

» Building Materials - Section 1

» Building Materials - Section 2

» Building Materials - Section 3

» Building Materials - Section 4

» Building Materials - Section 5

» Building Materials - Section 6

» Building Materials - Section 7

» Building Materials - Section 8

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