371. Ceramic recuperators are generally made of
Silicon carbide
Calcium carbide
Fireclay bricks
High alumina bricks
✅ The correct answer is option A.
Materials and Construction MCQs
372. Plate and frame filter press is usually made of
Mild steel
Cast iron
Stainless steel
Galvanised iron
✅ The correct answer is option B.
373. Which of the following exercises most powerful influence on the mechanical properties of steel?
Manganese
Carbon
Phosphorous
Silicon
✅ The correct answer is option B.
374. Slow and progressive deformation of a material with time under constant stress is called
Creep
Erosion
Resilience
None of these
✅ The correct answer is option A.
375. The crystal structure of most of the common metals is
Orthorhombic
Cubic
Hexagonal
None of these
✅ The correct answer is option B.
376. Amount of energy that a material can absorb before its fracture is a measure of its
Toughness
Resilience
Malleability
Ductility
✅ The correct answer is option A.
377. Corrosion resistance of steel is increased by the addition of
Phosphorous and tungsten
Nickel and chromium
Lead and vanadium
Molybdenum and tungsten
✅ The correct answer is option B.
378. Out of the following, copper vessels are the most suitable for the storage of
Bromine
Dry chlorine & dry fluorine
Nitric acid (95% and fuming)
Phosphoric acid (95%) & sulphuric acid (95% and fuming)
✅ The correct answer is option B.
379. In hot wire aneomometer used for gas flow measurement, the wire is normally made of
Copper
Platinum
Constantan
Chromium
✅ The correct answer is option B.
380. Material of construction of pipe generally used for conveying water in India is
Stainless steel
Cast iron
Wrought iron
Lead lined steel
✅ The correct answer is option B.