Chemical Engineering Basics MCQs

Question 1

A material in which the atoms are arranged regularly in some directions but not in others, is termed as 'mesomorphous material'; an example of which is

Accepted Answer

Lead

Answer

Glass

Answer

Mica

Answer

Silver

Question 2

Steel containing low percentage of nickel, chromium & tungsten are termed as the __________ steel.

Accepted Answer

Plain carbon

Answer

Wrought

Answer

Tool

Answer

Alloy

Question 3

Which of the following is termed as the boiler mounting ?

Accepted Answer

Blow off cock

Answer

Feed water pump

Answer

Steam superheater

Answer

Economiser

Question 4

Which of the following is termed as the boiler mounting ?

Accepted Answer

Blow off cock

Answer

Superheater

Answer

Economiser

Answer

Feed pump

Question 5

Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

Accepted Answer

Grashoff number & Prandtl number

Answer

Grashoff number

Answer

Grashoff number & Reynolds number

Answer

Reynolds number

Question 6

Window panes of aeroplanes are normally made of

Accepted Answer

Perspex (PMMA)

Answer

Teflon (PTFE)

Answer

Bakelite (phenol formaldehyde)

Answer

Polystyrene

Question 7

Viscoelastic behaviour is observed in __________ materials.

Accepted Answer

Non-crystalline organic polymeric

Answer

Ceramic

Answer

All crystalline

Answer

All of the above

Question 8

The value of $$\gamma = \frac{{{{	ext{c}}_{	ext{p}}}}}{{{{	ext{c}}_{	ext{v}}}}}$$ at < 500°C for air & most common gases can be safely assumed to be

Accepted Answer

1.4

Answer

0.8

Answer

1

Answer

1.8

Question 9

Electrolytes conduct electric current by

Accepted Answer

The movement of ions

Answer

The movement of molecules

Answer

Allowing electrons to flow through them from cathode to anode

Answer

Movement of electric charge through them