Copper
Magnesium
Both A & B
Neither A nor B
✅ The correct answer is option C.
Materials and Construction MCQs
Nickel is a constituent of
Bronze
Solder
Duralumin
Monel metal
✅ The correct answer is option D.
Evaporators used in caustic soda recovery and production plant are made of
Monel metal
Gun metal
Wood metal
Babbit metal
✅ The correct answer is option A.
Heavy duty bearings are usually made of
White metal
Phosphorous bronze
Monel
Zinc
✅ The correct answer is option A.
A metallic alloy in general as compared to their pure metal components is
More corrosion resistant
Having higher melting point
Having lower hardness, reactivity and fusibility
Having lower electrical conductivity
✅ The correct answer is option A.
Babbit metal used for making bearings should have
High-co-efficient of friction between journal and bearing
Ability to retain lubricant on its surface
Low co-efficient of friction between journal and bearing
Both B & C
✅ The correct answer is option A.
Graphite is corroded by
Sulphuric acid (10%)
Sea water
Hydrochloric acid
None of these
✅ The correct answer is option D.
The ‘bomb’ in the bomb calorimeter is made of
Molybdenum stainless steel
Mild steel
High silicon iron (14% Si)
Copper
✅ The correct answer is option A.
The maximum percentage of chromium that can be added to steel is about
12
18
24
30
✅ The correct answer is option B.
Babbit metals used for making bearings are
Tin or lead based alloys
Short of antifrictional properties
Having homogenous microstructure
Yellow metals
✅ The correct answer is option A.