A. Graphite
B. Lead sulphide
C. Lead
D. Both B. & C.
Related Mcqs:
- Lead is poured into the joint between two _______________ pipes ?
A. Mild steel
B. Concrete
C. Cast iron
D. Asbestos cement - Which of the following low melting alloy containing bismuth and lead is used for electric fuse ?
A. Wood’s metal
B. Babbitt metal
C. Monel metal
D. Duralumin - Lead is poured into the joints between two ___________________ pipes?
A. Cast iron
B. Steel
C. Concrete
D. Plastic - Hot working of lead is carried out at ___________________?
A. 75°C
B. 373°K
C. 150°C
D. Room temperature - Lead is poured into the joint between two ______________ pipes?
A. Mild steel
B. Concrete
C. Cast iron
D. Asbestos cement - Lead is added to 60:40 brass primarily to improve_________________?
A. Machinability
B. Corrosion resistance
C. Fluidity
D. Strength - Water-tube boiler is the one, in which _____________________?
A. Water passes through tubes and flue gases around it
B. Tube carrying hot flue gases are immersed in a pool of water
C. Tubes are placed in vertical position
D. None of these
Answer: Option A - Powder metallurgy process does not make metal powder by_________________________?
A. Atomisation
B. Grinding/milling
C. Hammering
D. Electrolytic deposition - A dense structure of grinding wheel is not used for the_____________________?
A. Ductile material
B. Hard materials
C. Brittle materials
D. Finishing cuts - Stainless steel is welded using__________________?
A. Oxy-acetylene flame
B. Oxy-hydrogen flame
C. Arc welding
D. Inert gas arc welding
