Chemical Engineering Basics MCQs

Question 1

Fine grained steels have

Accepted Answer

High ductility

Answer

High brittleness

Answer

Higher tendency to distort

Answer

None of these

Question 2

Floating control action

Accepted Answer

Moves the final control element at constant speed in either direction in response to an error signal

Answer

Changes the position of the final control element from on to off

Answer

Is used to counteract rapid load changes

Answer

None of these

Question 3

Styrofoam is the commercial name of

Accepted Answer

Polystyrene

Answer

Polyurathene

Answer

Polyacrylonitrile

Answer

Polybutadiene

Question 4

Which of the following is an inedible oil ?

Accepted Answer

Tallow oil

Answer

Corn oil

Answer

Olive oil

Answer

Cotton seed oil

Question 5

A metalloid possesses the characteristics of both the metals and non-metals. Which of the following is not a metalloid?

Accepted Answer

Lead

Answer

Arsenic

Answer

Antimony

Answer

None of these

Question 6

Hypo (sodium thiosulphate) because of its complex forming behaviour is used in photography to remove undecomposed silver bromide as a soluble complex for __________ of the picture.

Accepted Answer

Developing

Answer

Printing

Answer

Colour

Answer

Fixation

Question 7

Minimum diameter of the tube used for making water manometer should be __________ mm to avoid a correction for the effect of capillarity.

Accepted Answer

6

Answer

1

Answer

2.5

Answer

4

Question 8

Steel balls are manufactured by cold heading. After cold forming, they are subjected to

Accepted Answer

Stress-relieving

Answer

Tempering

Answer

Normalising

Answer

Artificial ageing

Question 9

__________ number is sometimes used in place of Grashoff number in free convection heat transfer.

Accepted Answer

Rayleigh

Answer

Stanton

Answer

Brinkman

Answer

Nusselt