A. Vanadium
B. Iron
C. Tungsten
D. Cobalt
Related Mcqs:
- Invar used in thermocouples is an alloy of nickel and________________?
A. Iron
B. Copper
C. Chromium
D. Lead - German silver used for decorative purposes contains maximum percentage of___________________?
A. Silver
B. Copper
C. Zinc
D. Nickel - Straight silicon steel (containing Si from 0.5 to 5%) because of their low hysteresis loss and high magnetic permeability are used for electrical appliances. Which of the following electrical appliances made of silicon steel contains maximum percentage of silicon (about 4%) ?
A. Armature of small motors/generators
B. Generators and small motors
C. Induction motors
D. High frequency transformers - Which of the following contains maximum percentage of carbon ?
A. Boiler plate steel
B. Rail steel
C. Saws for cutting steel
D. Railway spring steel - Which one contains the least percentage of carbon ?
A. Wrought iron
B. High speed steel
C. Cast iron
D. Pig iron - The chlorinator used in the manufacture of DDT is made of___________________?
A. Glass
B. Glass lined steel
C. Teflon
D. Bakelite - The ‘bomb’ in the bomb calorimeter is made of___________________?
A. Molybdenum stainless steel
B. Mild steel
C. High silicon iron (14% Si)
D. Copper - Trough of an apron conveyor is made of___________________?
A. Lead lined concrete vessel
B. Wood
C. Metal
D. Either B. or C. - 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 - White metal is an alloy of___________________?
A. Lead, tin and cadmium
B. Copper, tin and zinc
C. Copper and lead
D. None of these
