Materials and Construction MCQs Archives

291. Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system?

High silicon iron, silicon rubber, Kel-F and teflon

Mild steel and stainless steel

Cast iron, tin and aluminium

Copper, nickel and monel

✅ The correct answer is option A.

292. Which of the following heat treatment processes is used for softening the hardened material?

Normalising

Tempering

Annealing

None of these

✅ The correct answer is option B.

293. Invar used in thermocouples is an alloy of nickel and

Iron

Copper

Chromium

Lead

✅ The correct answer is option A.

294. A material capable of undergoing large permanent deformation, when subjected to compression is termed as

Malleable

Ductile

Brittle

None of these

✅ The correct answer is option A.

295. Which of the following is not a non-ferrous alloy?

Meehanite

Magnalium

Gun metal

Muntz metal

✅ The correct answer is option A.

296. The softest material in Mho’s scale (for measuring hardness) is

Talc

Gypsum

Rubber

None of these

✅ The correct answer is option A.

297. Light weight metallic alloy used in aircraft industry is

Aluminium

High silicon (14%) iron

Duralumin

Phosphor bronze

✅ The correct answer is option C.

298. Kel-F is a material, which is

Chemically known as polychlorotrifluor-oethylene (PTFE)

Having excellent chemical & high temperature resistance (upto 200°C)

Having elastomeric properties

All of the above

✅ The correct answer is option D.

299. Hot working of lead is carried out at

75° C

373° K

150° C

Room temperature

✅ The correct answer is option D.

300. Ability of a material to absorb energy in deformation in the plastic range is characterised as its

Ductility

Toughness

Creep

Resilience

✅ The correct answer is option B.