Question # 1

What is the function of Head Box in paper making machine.

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It dry the paper

It reduces thickness of paper

It makes the surface of paper smooth

It discharge the pulp at the screen of fourdrinier table

What term is used to denote a family of thermosetting polymers that are reaction products of alcohols and acids.

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Alkaline

Alkydes

Alcocide

Ketones

What is the ASTM tension testing designation for standard method for steel products.

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A 370

E 345

E8

E 9

When a drop of detergent solution is added onto a clean towel. It spreads instead of existing as a droplet Which of the following statements explains this phenomenon.

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Detergent acts as an emulsifying agent

Detergent reduce surface tension of water

Detergent reduces surface tension of water

All of above

Which of the following cast irons is a high carbon, iron carbon silicon alloy.

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Deorizers

Deoxidizers

Deoxifiers

Deterrent

Which cast iron is hard and wear resistant.

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Grey iron

White iron

Melleable iron

None of these

What is the raw material of sugar industry.

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Sugar cane

Potato

Carrot

Sugar heat

Both A and C

Which of the following term is not used in pulping.

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Kappa number

Copper number

Bromine Number

Octane Number

What prefix in steel identification means composition varies from normal limits.

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E

B

X

F

Organic farming is the technique of raising crops through uses of.

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Manures

Biofertilizers

Resistant varieties

All of these

What is clinker.

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Roasted calcareous material

Roasted argillaceous material

Roasted calcareous and argillaceous material

Roasted gypsum

In Pakistan how many units are involved to the production of glass.

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20

25

30

None of these

What impurity in steel can cause ted shortness which means the steel becomes unworkable at high temperature.

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Sulphur

Silicon

Magnesium

Aluminium

Refining is

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Extracting petroleum gas

Separation of various fraction

Heating of coal

All of above

Soap and detergent remove the direct form clothes due to.

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Osmosis

Gravity

Lowering of interfacial tension

Diffusion

The melting of nearly all glass is done in a continuous tank furnace. which operates steadily over periods of up to.

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a day

a month

a year

None of these

Galvanized steel are steel products coated with

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Carbon

Sulphur

Zinc

Iron

What refer by the ability of steel to be hardened through to its centre in large section?

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Malleability

Hardenability

Ductility

Rigidity

What is the approximate chromium range of a ferritic stainless steel.

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12% to 18%

16% to 20%

20% to 24%

12% to 16%

The composition of mixture of clay and lime stone in the raw for cement material is.

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75% lime stone and 25% clay

25% lime stone and 75% clay

15% lime stone and 55% clay

30% limes stone and 79% clay

While compacting the concrete by a mechanical vibrator, the slump should not exceed.

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2.5 cm

10 cm

3.1 cm

5.0 cm

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