A. Especially resistant to solutions containing H2SO4
B. Usually joined by burning (e.g. by melting to adjacent pieces with a torch)
C. Having very low elastic limit resulting in permanent deformation from either mechanical or
thermal strain
D. All A., B. and C.
Related Mcqs:
- 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 - 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
skyscraper buildings - 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 - The crystal structure of most of the common metals is_____________________?
A. Orthorhombic
B. Cubic
C. Hexagonal
D. None of these - Valves in pipe size of 2″ and under are normally made of_______________________?
A. Wrought iron
B. Brass
C. Bronze
D. Monel - Maximum consumption of lead is in the manufacture of _________________________?
A. Storage batteries
B. Solder alloys
C. Electric cable sheathing
D. Lead lined vessels - Hot working of lead is carried out at_________________?
A. 75° C
B. 373° K
C. 150° C
D. Room temperature - Lead alone is not used in storing equipment, because it________________?
A. Is very costly
B. Corrodes easily
C. Is having low creep strength
D. None of these - For platinum thermocouples, lead wires are made of___________________?
A. Copper & copper-nickel alloys
B. Copper & iron
C. Iron & nickel
D. Tin & nickel
