Online Chemical Engineering Test - Materials and Construction Test 2

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Total number of questions: 20.
Time allotted: 30 minutes.
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Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with

karbate

lead or glass

fireclay bricks

PVC

[#]

Percentage elongation of a material is a measure of its

ductility

brittleness

toughness

malleability

[#]

Pure nickel is

ferromagnetic above its curie point (i.e., 415°C).

having h.c.p. crystal lattice.

ferromagnetic at room temperature.

not resistant to oxidation at high temperature.

[#]

Cermets are used for making

cutting tools

abrasives

both (a) & (b)

neither (a) nor (b)

[#]

Which of the following alloys does not contain nickel ?

Chlorinet - 2 alloy

Monel

Inconel

Babbit metal

[#]

Nickel is a constituent of

bronze

solder

duralumin

monel metal

[#]

Maximum consumption of zinc is in

alloying

galvanising

utensil manufacture

electrical industry

[#]

Ability of a material to __________ is indicated by its damping capacity.

withstand compression

absorb vibration

absorb shock

none of these

[#]

Pick out the correct statement.

Stainless steel is nothing but chromium coated steel.

Hardening of a soft metal can be done by alloying it with another metal or non-metal.

Plastic deformation of a material is its temporary distortion under the action of applied stress.

Rusting of iron is not electrochemical in nature.

[#]

10.

Steel balls for ball bearings are generally made of __________ steel.

cast

stainless

free carbon

carbon chrome

[#]

11.

Which of the following is a low melting point metal ?

Stainless steel

Wrought iron

Tin

Copper

[#]

12.

Mild steel is

a low carbon steel (0.05 to 0.3% carbon).

highly resistant to corrosion (as much as stainless steel).

a high carbon steel (0.5 to 1.5% carbon).

very poor in strength & ductility.

[#]

13.

DDT is shipped in

stainless steel containers

paper bags

fibre drums

either (b) or (c)

[#]

14.

__________ can replace tungsten in high speed steel,

Chromium

Vanadium

Cobalt

Molybdenum

[#]

15.

Gas holder of a gobar (cowdung) gas plant is made of

molybdenum stainless steel

tin

mild steel

aluminium

[#]

16.

Maximum consumption of lead is in the manufacture of

storage batteries.

solder alloys.

electric cable sheathing.

lead lined vessels.

[#]

17.

Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its

high co-efficient of thermal expansion.

low thermal conductivity.

high corrosion resistance.

all (a), (b) and (c).

[#]

18.

A measure of toughness of a material is its

percentage elongation

yield strength

ultimate strength

area under stress-strain diagram

[#]

19.

Combination of metals and ceramics are called

metalloy

cermets

pellets

non-crystalline ceramics

[#]

20.

__________ is a donor impurity for semi-conductors.

Boron

Antimony

Gallium

none of these

[#]

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Online Chemical Engineering Test - Materials and Construction Test 2

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