Chemical Engineering - Chemical Engineering Basics

21. 

Production of a hollow product by inflation of a tube or parison is called the __________ process.

A. blow moulding
B. calendering
C. extrusion
D. injection

Answer: Option A

Explanation:

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22. 

A spark ignition petrol engine has

A. throttle valve
B. carburettor
C. both (a) & (b)
D. neither (a) nor (b)

Answer: Option C

Explanation:

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23. 

Out of the following, the highest emf for a given temperature is generated by the __________ thermocouple.

A. chromel - alumel
B. iron - constantan
C. platinum - platinum + rhodium
D. copper-constantan

Answer: Option B

Explanation:

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24. 

Which is the only metal that exists in liquid state at room temperature?

A. Sodium
B. Mercury
C. Lithium
D. Strontium

Answer: Option B

Explanation:

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25. 

An approximately __________ process exemplifies the flow of a gas through a very long pipe of uniform cross-section.

A. adiabatic
B. isothermal
C. isentropic
D. isochoric

Answer: Option B

Explanation:

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