Question # 1

The nutrients which are required in very small amount for the normal growth of plants are called.

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Nitrogenous fertilizers

Micronutrients

Phosphorus fertilizer

All of the above

What refers to the tin mill steel, without a coating.

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White plate

Black plate

Tin steel free

Dichromate tin

Which of the following does NOT react with sodium hydroxide solution.

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Fat

Vinegar

Ethanol

Water

Soapy detergents and soapless detergents behave differently in hard water because they

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Have different hydrophilic heads

Have different hydrophobic hydrocarbon chains

Have different pH values

Above A and C both

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

___________ surfactants perform well over a wide range of water hardness and pH.

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Anionic

Cationic

Nonionic

Neutral

in the process of production of soap the soap can be salted out by adding

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Concentrated sulphuric acid

Concentrated potassium hydroxide solution

Concentrated sodium chloride solution

None of above

Potassium sulphate with 48% to 52% potash, is made from.

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Potassium phosphate

Potassium Chloride

Potassium Nitrate

None of these

Which substances is not used as an additive in paper industry.

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Glucose

Starch

Alum

None of these

Steel that are used for axles, gears, and similar parts requiring medium to high and strength are known as.

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Medium carbon steel

Low carbon steel

Very high carbon

High carbon steel

What is clinker.

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Roasted calcareous material

Roasted argillaceous material

Roasted calcareous and argillaceous material

Roasted gypsum

Which sequence of steps is correct in paper making machine

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Pressing Dyring, Flow spreader Calender stock

Flow spreader, Pressing, Prying Calender sock

Drying ,Pressing , Flow spreader, Calender stock

None of above

What is the scaling off of a surface in flakes or layers as the result of corrosion?

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Expoliation

Corrosion fatigue

Scaping

Fretting

What is a coal that has been previously burned in an oxygen poor environment?

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Tuyere

Coke

Silver

Diamond

A steel cannot qualify for stainless prefix until it has at least how many percent of chromium.

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10 %

20 %

5 %

30 %

Which cast iron is hard and wear resistant.

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Grey iron

White iron

Melleable iron

None of these

What corrosion occurs under organic coating on metals as fine wavy hairlines?

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Stray current corrosion

Microbiological corrosion

Filiform corrosion

Simple corrosion

Final paper wound in the form of a real having final moisture of about.

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6-8%

9 - 12 %

13-15 %

4 - 10%

The wear-resistance of the material is attributed to its ability on ________ that is the hardness is increased greatly when the steel is cold worked.

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Cold harden

Stress harden

Strain harden

Cool temperature

Aviation Fuel contains.

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Light Naphtha

Medium Naphtha

Kerosene

Diesel

Not a major contributor of engineering ceramics

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SiC

SiO2

Si3N4

BH3

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