A. Copper & copper-nickel alloys
B. Copper & iron
C. Iron & nickel
D. Tin & nickel
Related Mcqs:
- Constantan used in thermocouples is an alloy of___________________?
A. Iron & copper
B. Copper & aluminium
C. Lead & tin
D. None of these - Lead pipes are not safe for carrying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)2. Lead pipes are readily corroded by___________________?
A. Dilute HCl
B. Acetic acid
C. Concentrated H2SO4
D. None of these - Lead pipes are not safe for carrying drinking water because water containing dissolved oxygen attacks lead thereby forming poisonous Pb (OH)2. Lead pipes are readily corroded by_________________?
A. Dilute HCI
B. Acetic acid
C. Concentrated H2SO4
D. None of these - Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower_________________?
A. Price
B. Corrosion resistance
C. Thermal conductivity
D. Abundant availability - Platinum and silver are corroded by___________________?
A. Caustic soda solution
B. Phosphoric acid
C. Sulphuric acid (10%)
D. None of these - Invar used in thermocouples is an alloy of nickel and________________?
A. Iron
B. Copper
C. Chromium
D. Lead - Gas holder of a gobar (cow-dung) gas plant is made of___________________?
A. Molybdenum stainless steel
B. Tin
C. Mild steel
D. Aluminium - Hydrochloric acid absorber in made of___________________?
A. Cast iron
B. Mild steel
C. Karbate
D. Stainless steel - Acetaldehyde is produced by hydration of acetylene in a sulphuric acid solution of mercuric sulphate. Hydration tower is made of___________________?
A. Rubber lined mild steel
B. Lead lined mild steel
C. Aluminium
D. Cast iron - Tank furnace used for melting of glass is made of___________________?
A. Mild steel
B. Cast iron
C. Refractory blocks
D. Stainless steel
