Chemical Engineering - Chemical Engineering Basics

16. 

Metallic surveying tapes are made of __________ which has a low co-efficient of expansion & enough strength.

A. invar
B. hastealloy
C. duralumin
D. monel metal

Answer: Option A

Explanation:

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

17. 

Which of the following is a unit of time ?

A. Barn
B. Light year
C. Angstrom
D. none of these

Answer: Option D

Explanation:

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18. 

__________ furnace is generally used in the non-ferrous foundaries.

A. Direct arc
B. Indirect arc
C. Resistance
D. Induction

Answer: Option B

Explanation:

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19. 

Steel & cast iron pipes are produced by __________ casting.

A. slush
B. die
C. investment
D. true centrifugal

Answer: Option D

Explanation:

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20. 

The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance.

A. casting
B. pattern
C. draft
D. distoration

Answer: Option C

Explanation:

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