CHEMICAL ENGINEERING BASICS QUIZ

__________ iron is produced by the annealing of white cast iron.

Grey

Ductile

Malleable

Nodular

TRUE ANSWER : ?
YOUR ANSWER : ?

Cold cracking in the heat affected zone of a high strength steel weld can take place because of the

Relatively high sulphur content in the base metal

Sufficient hydrogen present in the welding arc

Retained austenite

Martensite formation

TRUE ANSWER : ?
YOUR ANSWER : ?

In the Bayer's process, bauxite is digested under pressure using

NaOH

NH₃

H₂SO₄

HCl

TRUE ANSWER : ?
YOUR ANSWER : ?

Unit of viscosity in CGS system is

Gm .cm⁻², sec⁻¹

Gm .cm⁻¹ sec⁻¹

Gm . cm² . sec⁻²

Gm . cm . sec⁻¹

TRUE ANSWER : ?
YOUR ANSWER : ?

Cold chiesel & hammers are made of

High speed steel

High carbon steel

Mild steel

Forged steel

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following materials has the maximum shrinkage allowance ?

Aluminium alloy

Cast iron

Lead

Brass

TRUE ANSWER : ?
YOUR ANSWER : ?

Materials having resistivity ranging from 1 to 100 ohm. cm is termed as

Insulator

Semi-conductor

None of these

Conductor

TRUE ANSWER : ?
YOUR ANSWER : ?

First empirical temperature scale conceived is the __________ temperature scale.

Reaumer

Celcius

Farenhite

Absolute

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following are made out of the carbon steel having carbon content of 0.9 to 1% ?

Mandrels, twist drills, small lathe tools and razors

Small punches, broaches reamers and springs

Forgings like can shaft, structural steel plate, threading dies and drawing dies

Cutlery, screws, rivets and files

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength.

Shot peening

Lancing

Spinning

Slugging

TRUE ANSWER : ?
YOUR ANSWER : ?

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