A. Reduce & melt the iron ore
B. Increase the fluidity of slag
C. Remove sulphur & phosphorus from molten metal
D. None of these
✅ The correct answer is option A.
Engineering MCQs
pH value of rain water in India ranges from
A. 5.5 to 7.5
B. 8 to 9.5
C. 3.5 to 5
D. 9.5 to 10.5
✅ The correct answer is option A.
Drills are usually made of
A. Cermets
B. High speed steel
C. Alloy steel
D. Tungsten carbide
✅ The correct answer is option B.
Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the __________ temperature of air.
A. Wet bulb
B. Dry bulb
C. Saturation
D. Dew point
✅ The correct answer is option A.
The speed of sound will be maximum in
A. Vacuum
B. Metal
C. Air
D. Water
✅ The correct answer is option B.
Atomic __________ of an element is a whole number.
A. Weight
B. Number
C. Volume
D. Radius
✅ The correct answer is option B.
Main constituent of bone ash is
A. Ammonium phosphate
B. Calcium phosphate
C. Animal charcoal
D. Ammonium sulphate
✅ The correct answer is option B.
The term ‘Value’ in value engineering technique refers to the __________ cost of the product.
A. Function (utility)
B. Selling
C. Production
D. Total
✅ The correct answer is option A.
Steel produced from phosphatic iron is __________ in nature.
A. Malleable
B. Ductile
C. Brittle
D. Tough
✅ The correct answer is option C.
Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when
A. Cheap electricity is available
B. The precious metal content of copper is high
C. There is a demand for ultrapure (99.99%) electrolytic copper
D. All of the above
✅ The correct answer is option D.