Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 9
1.
Coating provided on the electrodes used in the arc welding is not expected to
A. add alloying elements. B. prevent electrode from contamination. C. stabilise the arc. D. provide protective atmosphere to weld.
Answer: Option B
Explanation:
2.
Desalination of water
A. makes it potable. B. makes it non-potable. C. means distillation of water. D. none of these.
Answer: Option A
Explanation:
3.
Viscoelastic behaviour is observed in __________ materials.
A. non-crystalline organic polymeric B. ceramic C. all crystalline D. all amorphous
Answer: Option A
Explanation:
4.
Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation
A. pressure falls below the vapour pressure B. pressure becomes very high C. temperature becomes low D. all 'a', 'b' & 'c'
Answer: Option D
Explanation:
5.
Which of the following materials has the poorest electrical conductivity ?
A. Carbon B. Aluminium C. Silver D. Stainless steel
Answer: Option A
Explanation:
