The main constituent of carborundum is ___________________ carbide?
The main constituent of carborundum is ___________________ carbide?
A. Calcium
B. Silicon
C. Boron
D. Aluminium
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Locomotive boiler tubes are made of _____________ alloys?
Locomotive boiler tubes are made of _____________ alloys?A. Arsenic copper
B. Magnesium
C. Aluminium
D. NickelLead is
Question: Lead is
[A].not resistant to corrosion. [B].
used as a cathodic material. [C].
not used as pigment (in its compound forms) for paints. [D].
used as a shock absorber (in mattress form) between the foundation and steel framework of skyscrapper buildings. Answer: Option D
Explanation:
No answer description available for this question.
Bush bearings are made of______________________?
Bush bearings are made of______________________?A. Mild steel
B. Phosphorous bronze
C. White metal alloys
D. None of theseWhite cast iron as compared to grey cast iron is
Question: White cast iron as compared to grey cast iron is
[A].more durable [B].
very brittle [C].
very hard [D].
all (a), (b) & (c) Answer: Option D
Explanation:
No answer description available for this question.
Ferric stainless steels compared to austenitic stainless steels________________?
Ferric stainless steels compared to austenitic stainless steels________________?A. Have lower corrosion resistance
B. Are harder to fabricate
C. Are less ductile and hence less suitable for cold pressing
D. All A., B. and C.Glass is corroded by________________?
Glass is corroded by________________?A. Fluorine (dry or wet)
B. Sulphuric acid
C. Phosphoric acid
D. None of these