7/23/2019 Material Quiz Question

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1.) Which of the following metals is a refractory material?a. Ironb. Nickelc. Tungstend. Copper

2.) Number of inariant !oint in "tandard Iron Carbon !hase #iagram?a. 1b. 2c. 3d. $

%.) Which &aterial 'as 'ighest &elting !oint?a. Cb. Wc. (ed. Ni

.) *nit of #islocation #ensity is e+pressed asa. mb. m2

c. m,1

d. m-2

-.) utectic reaction occurs whena. L S1 + S2

b. / "1 0 /1

c. " "1 0 "2

d. / 0"1 "2 

.) he !idgeon uses for &agnesium isa. Carbonb. 3luminumc. 'ydrogend. Ferro Silicon

4.) he important mineral for ungsten is  eleiecsht

Scheelite

5.) Collapsible tubes are made by which processtsnio+treExtrusion

6.) Needle /ike structure is calledrlaccciuaAccicular

1$.) With increase in emperature lectrical Conductiity

7/23/2019 Material Quiz Question

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a. Increasesb. #ecreasec. Constantd. +ponentially.

11.) Which of the following bond is weaker bond

a. Ionicb. Coalentc. &etallicd. ander!all

12.) Which of the following metals can be e+traction through electro

metallurgicala. Ironb. 7incc. /eadd. Aluminium

1%.) 8old is namely /eached byidachyC"anide

1.) *nder normal condition austenitic stainless steel isa. #on magnetic in natureb. &agnetic in naturec. 9rittle in Natured. Corrosie in Nature

1-.) (ormula for !entalandite isa. $Fe%#i&'S(

b. :(e;Ni)<:<')c. :Ni;&g)%"i2<-:<')

d. Cu(e"2