Chemical Engineering Basics MCQs

Question 1

Which of the following is not a principal alloying element for the structural steel?

Accepted Answer

Molybednum

Answer

Nickel

Answer

Manganese

Answer

Chromium

Question 2

Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and

Accepted Answer

Manganese

Answer

Silicon

Answer

Nickel

Answer

Chromium

Question 3

Spherical shape of mercury droplets is due to its

Accepted Answer

High surface tension

Answer

High viscosity

Answer

Low surface tension

Answer

High density

Question 4

Which of the following polymers is obtained by copolymerisation of three monomers?

Accepted Answer

ABS

Answer

SAN

Answer

SBR

Answer

PTFE

Question 5

Metalloids . . . . . . . .

Accepted Answer

Are compounds that exhibit both metallic & non-metallic properties to some extent and are exemplified by elements like germanium, silicon & boron

Answer

Are good conductor of heat & electricity

Answer

Act as electron donors with metals & as electron acceptor with non-metals

Answer

Are not necessarily solids at room temperature

Question 6

Temperature attained in soldering of metals is about __________ °C.

Accepted Answer

150-300

Answer

400-500

Answer

650-800

Answer

1000-1100

Question 7

Methyl orange indicator turns

Accepted Answer

Orange yellow in alkaline medium

Answer

Orange yellow in acidic medium

Answer

Colourless in acidic medium

Answer

Colourless in basic medium

Question 8

When an isolated thermodynamic system executes a process,

Accepted Answer

No chemical reaction takes place within the system

Answer

Work is done

Answer

Heat transfer takes place

Answer

Mass flow occurs across the boundary of the system

Question 9

In chemical dehumidification process

Accepted Answer

Dry bulb temperature remains constant

Answer

Wet bulb temperature increases

Answer

Dew point temperature increases

Answer

Dry bulb temperature increases