Balls in a ball mill are usually made of__________________?
Balls in a ball mill are usually made of__________________?
A. Steel
B. Cast iron
C. Stainless steel
D. Bronze
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Corrosion involves exchange of electrons in ____________ corrosion?
Corrosion involves exchange of electrons in ____________ corrosion?A. Chemical
B. Electrochemical
C. Both A. & B.
D. Neither A. nor B.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_________________?
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 theseCarbon content in plain carbon steel is ______________ percent?
Carbon content in plain carbon steel is ______________ percent?A. 0.1 to 0.15
B. 0.35 to 0.45
C. 0.65 to 0.80
D. 0.85 to 1.2Addition of nickel to copper improves its
Question: Addition of nickel to copper improves its
[A].machinability [B].
ductility [C].
strength [D].
hardness Answer: Option D
Explanation:
No answer description available for this question.
Photographic plates are coated with_________________?
Photographic plates are coated with_________________?A. Silver nitrate
B. Silver halide
C. Calcium silicate
D. Metallic silverSO3 is absorbed using H2SO4 in a____________________?
SO3 is absorbed using H2SO4 in a____________________?A. Cast iron packed tower
B. Stainless steel plate tower
C. Packed steel tower lined with acid proof bricks
D. None of these