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.Management Sciences
Category: Materials and Construction
Copper is dissolved from its ore by H2SO4 in a percolation tank made of_________________?
0
A. Wood
B. Stainless steel
C. Reinforced concrete lined with lead
D. High silicon iron (14% Si)
Which of the following alloys does not contain nickel ?
A. Chloro, et-2 alloy
B. Monel
C. Inconel
D. Babbitt metal
Presence of manganese in alloy steel improves its___________________?
A. Corrosion resistance
B. Cutting ability
C. Abrasion resistance & toughness
D. Elasticity & creep resistance
The digester of a Gobar gas plant is a___________________?
A. Mild steel drum
B. Stainless steel vessel
C. Masonry well
D. Cast iron vessel
Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of__________________?
A. Stainless steel or glass lined steel
B. Nickel clad steel
C. High silicon cast iron
D. Aluminium
Which of the following comprises of hydrocarbons ?
A. Mica flakes
B. Glass
C. Rubber
D. None of these
Pipes for bi-cycle frames are made of _____________ steel?
A. Hot rolled
B. Chrome carbon
C. Cold rolled
D. Stainless
Brass is an alloy of____________________?
A. Nickel and tin
B. Copper and zinc
C. Tin and lead
D. Copper, nickel and zinc
The metals occuring at the lower most position in the electromotive series____________________?
A. Do not resist corrosion
B. Resist corrosion very strongly
C. Are very brittle
D. Are heat insulators
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