Question # 1

In glass making the whole combination of ingredients is called a.

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Gangue

Batch

Mixture

None of these

What field of study encompasses procurement and production of metals.

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Metallurgy

Geology

Material science

Metalgraphy

Glass was first made by about________

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40 BC

400 BC

4000 BC

100 BC

What is called black gold.

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Petroleum

Coal

Coal tar

Natural gas

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

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Fat

Vinegar

Ethanol

Water

in the system of designating wrought aluminum alloys the letter F that follows the number indicates what condition of the alloy.

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As fabricated

Calcined

Annealed

Strain hardened

The use of acids to remove oxides and acids on hot worked steels is known as

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Tempering

Picking

Machining

Sizing

Not a Characteristic property of ceramic material

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High temperature stability

High mechanical strength

Low elongation

Low hardness

If diesel has cetane number of 50 then the diesel index will be.

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36

46

56

66

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%

Red brass contain about how many percent of zinc.

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20 %

15 %

30 %

25 %

What letter suffix steel identification means that it is steel with boron as an alloying elements.

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xxL xx

xxBxx

xxHxx

xxKxx

Polyethylene Glycols are used in the preparation of which tye of detergetns.

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Cationic detergents

Anionic detergents

Non ionic detergent soaps

None of above

Which of the following statements is NOT true .

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About 10% of the earth's crust is iron

Pure iron does not have significant industrial use because it is too weak and soft.

Steel in an alloy of carbon and iron with limits on the amount of carbon

None of above

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%

Which of the following term is not used in pulping.

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Kappa number

Copper number

Bromine Number

Octane Number

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

Proper proportioning of concrete, ensures

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Resistance to water

Desired durability

Water tightens of the structure.

All

The special chrome steels of the stainless variety contain how many percent of chromium.

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4 to 8

11 to 17

9 tp 10

12 to 15

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

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Potassium phosphate

Potassium Chloride

Potassium Nitrate

None of these

What is the lowest temperature diffusion hardening process and does not require a quench

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Carburizing

Tempering

Nitriding

Melting

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