Chemical Engineering - Chemical Engineering Basics

11.
Co-efficient of performance of a Carnot cycle refrigerator operating between - 23°C and + 27°C is
3
5
0.5
1.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
Presence of nickel & chromium in steel does not raise its
elastic limit
machining properties
ductility
resilience
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
Hot extrusion process is not used for making
cast iron pipe for domestic water supply.
aluminium curtain rods.
stainless steel tubes used in furnitures.
any of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
Addition of __________ to steel does not help in improving its machinability.
sulphur
silicon
lead
phosphorous
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
Quartz is a __________ material.
diamagnetic
ferromagnetic
ferroelectric
piezoelectric
Answer: Option
Explanation:
No answer description is available. Let's discuss.