MATERIALS AND CONSTRUCTION QUIZ

Containers made of high silicon cast iron (14% Si) are not suitable for the storage of

Phosphoric acid (95%) & sulphuric acid (95%)

Benzoic & boric acids

Acetic acid

Hydrochloric acid (concentrated)

TRUE ANSWER : ?
YOUR ANSWER : ?

White cast iron as compared to grey cast iron is

All of these

Very brittle

More durable

Very hard

TRUE ANSWER : ?
YOUR ANSWER : ?

Babbit metal used for making bearings should have

Low co-efficient of friction between journal and bearing

High-co-efficient of friction between journal and bearing

Ability to retain lubricant on its surface

Both B & C

TRUE ANSWER : ?
YOUR ANSWER : ?

Maximum consumption of zinc is in

Galvanising

Utensil manufacture

Electrical industry

Alloying

TRUE ANSWER : ?
YOUR ANSWER : ?

The process of heating the cold pressed metallic powder is called __________ in powder metallurgy.

Sintering

Precipitation

Agglomeration

Fusion

TRUE ANSWER : ?
YOUR ANSWER : ?

Addition of __________ in steel can help in increasing the depth of hardness.

Tungsten

Chromium

Vanadium

Nickel

TRUE ANSWER : ?
YOUR ANSWER : ?

The purpose of nitriding the steel is to

None of these

Harden its surface

Soften its surface

Improve its reliability

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following has a very high carbide forming tendency in steels?

Chromium

Nickel

Vanadium

Silicon

TRUE ANSWER : ?
YOUR ANSWER : ?

Plasticisers are added to polymers to improve their

Tensile strength

Softness & flexibility

Acid resistance

Alkali resistance

TRUE ANSWER : ?
YOUR ANSWER : ?

Shock resisting steels should possess high

Toughness

Hardness

Wear resistance

Tensile strength

TRUE ANSWER : ?
YOUR ANSWER : ?

↑