A. 20
B. 200
C. 500
D. 1000
✅ The correct answer is option B.
Basic Chemical Engineering MCQs
Resilience of a bolt can be increased by increasing its
A. Length
B. Shank diameter
C. Head diameter
D. None of these
✅ The correct answer is option A.
In age-hardenable alloys, maximum ductility is obtained
A. In as cast state
B. Immediately after solution treatment and subsequent quenching
C. After optimum ageing
D. After overageing
✅ The correct answer is option C.
The increase in hardness of metal due to its cold working is termed as the __________ hardening.
A. Work
B. Age
C. Induction
D. Flame
✅ The correct answer is option C.
Gas carrying pipelines are best joined by
A. Nuts & bolts
B. Rivetting
C. Welding
D. None of these
✅ The correct answer is option C.
Most of the phosphorous present in the blast furnace burden enters into
A. Hot metal
B. Flue gases
C. Slag
D. Refractory lining
✅ The correct answer is option A.
Sudden fall of atmospheric pressure by a large amount is an indication of the
A. Rain
B. Cold wave
C. Storm
D. Fair weather
✅ The correct answer is option C.
__________ can not increase the fatigue strength of a material.
A. Grain refining
B. Grain coarsening
C. Surface hardening
D. Shot peening
✅ The correct answer is option B.
Laser welding is widely employed in the __________ industries.
A. Electronic
B. Structural
C. Process
D. Heavy
✅ The correct answer is option A.
Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses iron ore in the form of
A. Lumps
B. Pellets
C. Briquettes
D. Sinter
✅ The correct answer is option B.