Chemical Engineering MCQs

Option A: Gamma rays

Option B: X-rays

Option C: Microwaves

Option D: Gas welding

Correct Answer: Microwaves ✔

Option A: 0.03

Option B: 0.3

Option C: 0.8

Option D: 1.5

Correct Answer: 0.3 ✔

Option A: Combustion with air

Option B: Gravitational pull by earth

Option C: Friction with earth’s atmosphere

Option D: Loss in weight of the satellite

Correct Answer: C. Friction with earth’s atmosphere ✔

Option A: Lower melting temperature

Option B: Same melting temperature

Option C: Same composition

Option D: Both ‘B’ & ‘C’

Correct Answer: D. Both ‘B’ & ‘C’ ✔

Option A: Cyaniding

Option B: Sherardizing

Option C: Spheroidising

Option D: None of these

Correct Answer: Cyaniding ✔

Option A: Increases

Option B: Decreases

Option C: Remain constant

Option D: Either A. or B. depends on the type of semi-conductor

Correct Answer: Increases ✔

Option A: Period increases

Option B: Period decreases

Option C: Group increases

Option D: Both ‘B’ & ‘C’

Correct Answer: D. Both ‘B’ & ‘C’ ✔

Option A: 768

Option B: 908

Option C: 1400

Option D: 1539

Correct Answer: 768 ✔