Chemical Engineering - Chemical Engineering Basics

16. 

Gas carrying pipelines are best joined by

A. nuts & bolts
B. rivetting
C. welding
D. none of these

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

17. 

Scab is a defect developed during __________ of metals.

A. forging
B. sand casting
C. machining
D. welding

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

18. 

Pick out the wrong statement about powder metallurgy technique.

A. Powder metallurgy techniques are applied at room temperature.
B. Final product in powder metallurgy is not necessarily metallic powder.
C. The final product in powder metallurgy is made from metallic powder.
D. Silver and nickel when melted together do not mix to form an alloy ; however alloy of these constituents can be made by powder metallurgy technique.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

19. 

A floating body oscillates about its __________ when it is displaced slightly.

A. centre of gravity
B. metacentre
C. centre of buoyancy
D. centre of pressure

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

20. 

Which of the following relatively employs the highest heat transfer surface area in a high pressure boiler ?

A. Airpreheater
B. Economiser
C. Steam superheater
D. Furnace water wall

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.