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Materials and Construction

Presence of even very minute amount (say 0.1%) of ______________ in copper, reduces its electrical conductivity very seriously?

Presence of even very minute amount (say 0.1%) of ______________ in copper, reduces its electrical conductivity very seriously?

A. Bismuth
B. Arsenic
C. Antimony
D. Both B. and C.

Presence of even very minute amount (say 0.1%) of ______________ in copper, reduces its electrical conductivity very seriously? Read More »

Materials and Construction

Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70% ?

Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70% ?

A. Cast iron
B. Steel
C. Nickel
D. Karbate

Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70% ? Read More »

Materials and Construction