Question # 1

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

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E

B

X

F

The layer containing petroleum oil and gas is.

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Above that of water

Below water

Between water and sand

All of above

Which one of the following set of raw material is most suitable for manufacture of urea.

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CH4N2 and CO2

H2CO2 and H2O

H2O N2 and H2

H2O N2 AND KCl

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

Which substance is used as filler or additive in paper making.

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Starch

Glucose

Cellulose

Maltose

The percentage of nitrogen in ammonia is _______________%

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32

82

25

55

Washing soap can be prepared by saponification with alkali of _____ of the following oil.

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Rose oil

Paraffin oil

Groundnut oil

Coconut oil

________is best in its cleaning action.

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Soap

Detergents

Surfactant

None of these

During the preparation of soap the liquid separated by distillation is

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Sodium hydroxide

Oil

Fats

Glycerol

Bromine number is measure of.

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Paraffins

Unsaturates

Saturates

None of these

What is a process for making glass reinforced shapes that can be general by polling resin impregnated glass stands though a die.

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Continuous pultrusion

Bulk molding

Vacuum bag forming

Computational analysis

_________ is preferred for horticultural crops and for tobacco and potatoes.

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Potassium Chloride

Potassium Sulphate

Potassium NItrate

None of these

The main constituent of glass is.

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Silica

Silicon

Magnesia

Alumina

What is the advantage of quench hardening?

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Imporoved strength

Hardness

Wear characteristics

All of the choice

Soap is soluble in grease because it

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Is non polar

Has a hydrophobic head

Has a hydrophobic tail

Has an ionic head and a hydrocarbon tail

The green color of water in a lake is due to

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Excessive growth of sea weeds

Algae

Pollution

Grass

The substance added to the soil to provide one or more nutrient elements essential for plants growth are called.

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Growth hormones

Fertilizers

Salts

Minerals

What is the effect of aluminum in cast iron.

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To increase hardness above 0.5 %

To deoxidize molten cast iron

To affect machinability, ductility and shrinkage depending on form

Both A and B

PCRA stand for

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Pollution control research association

Petroleum conversation Research association

Petroleum control research association

All of above

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

Which type of organic compounds does fat belong to.

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Alkene

Ester

Alkanol

Alkanoic acid

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