Chemical Engineering - Chemical Engineering Basics

46.
Lead pencil contains
graphite
lead sulphide
lead
both(b) & (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.

47.
Function of gear box is to
reduce the speed.
obtain variable speed.
increase the speed.
produce high torque.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

48.
Pearlite comprises of
87% cementite & 13% Fe.
87% ferrite & 13% cementite.
93.33% ferrite & 6.67% C.
87% ferrite & 13% C.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

49.
Which of the following if present in iron ore, enhances its value ?
Alumina
Alkali oxide
Lime & Magnesia
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

50.
As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise.
110
85
60
45
Answer: Option
Explanation:
No answer description is available. Let's discuss.