Question # 1

In the process of preparation of detergents the organic acids produced are neutralized with.

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Sodium hydroxide

Sodium sulphate

Sodium chloride

Potassium hydroxide

Which of the following process is not sorbent separation technolgy.

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Penex

Parex

Molex

Olex

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

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Fat

Vinegar

Ethanol

Water

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

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Tempering

Picking

Machining

Sizing

__________ is used for fruits, vegetables and tobacco

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Potassium Chloride

Potassium Sulphate

Potassium nitraite

All above

Glass was first made by about________

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40 BC

400 BC

4000 BC

100 BC

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 minimum tensile strength of gray Cast Iron class 50

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25000 ibf /in²

50000 ibf/in²

100000 ibf/in²

900000 ib/in²

What cast iron has modular or spheroidal graphite?

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Ductile iron

Gray iron

White iron

Raw iron

Purpose of sizing is.

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To increase the strength

To improve formation

To increase resistance toward water

To remove wastes

The following ceramic product is mostly used as pigment in paints.

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TiO2

SiO2

uo2

ZrO2

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

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Tuyere

Coke

Silver

Diamond

What field of study encompasses the procurement and production of metals.

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Metallury

Geology

Metagraphy

Nanochemistry

Commercial detergents contain mainly ___________

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RCOON

RONa

RSNa

All above

What refers to the deterioration of material by oscillatory relative motion of small amplitude between two solid surfaces in a corrosive environment?

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Stray current corrosion

Microbiologicla corrosion

Fretting corrosion

None of these

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

Which of the following is not adsorptive separation process.

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Parex

Olex

Penex

None of these

What is a measure of rigidity?

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Stiffiness

Jardmess

Strength

Modulus of elasticity

What is caustic potash

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NaOH

KOH

NaCl

KCl

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

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