Question # 1

Ammonium nitrate is sold as a mixture with

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Soda Ash

Lime stone

Zinc

None of above

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

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Tempering

Picking

Machining

Sizing

For highly paraffine , crude oil, the characterization factor will be in range of

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11.5-12.5

12.5-13.0

13.5-14.0

13.4-15.0

What is the effect of manganese in cast iron.

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^{To affect the machinability ductility and shrinkage depending on form}

To reduce hardness by combining with sulfur below 0.5% and increase hardness above 0.55

To dioxide molten cast iron

Have no effect

Fertilizers are classified into

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Two major categories

Three major categories

Four major categories

None of above

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 is the equilibrium temperature of transformation of austenite to pearlite

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1000 F

1333 F

166 6 F

1222 F

What is the most undesirable of all the elements commonly found in steels.

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Sulphur

Phosphorus

Silocn

Magnesium

Which of the following process is not sorbent separation technolgy.

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Penex

Parex

Molex

Olex

The term 'brass' is very commonly used to designate any alloy primarily of.

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Copper and zinc

Aluminum and iron

Copper and aluminum

Zinc and nickel

The group of steel are water hardened tool steels.

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Groups S

Groups W

Groups O

Group F

Which of the following is not adsorptive separation process.

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Parex

Olex

Penex

None of these

Petroleum is formed from

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Domestic animal

Organisms in sea

Wild animals

All above

Not a major contributor of engineering ceramics

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SiC

SiO2

Si3N4

BH3

Fats and oil are_____________

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Acids

Alcohols

Salts

Base

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

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Deorizers

Deoxidizers

Deoxifiers

Deterrent

Iron is said to be abundant in nature. About how many percent of the earth’s crust is iron.

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10%

5%

20%

8%

The chrome vanadium steels contain how many percent of vanadium.

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0.15 to 0.30

0.05 to 0.15

0.30 to 0.45

0.45 to 0.60

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

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Gangue

Batch

Mixture

None of these

The principle former of almost all glasses is

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(SIO2)n

(SiO3)n

(SiO2)

None of these

What is use of the addition of brine solution in the production of soap from castor oil and sodium hydroxide.

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To speed up the reaction

To lower the solubility of soap

To remove unreacted castor oil and sodium hydroxide

To increase the purity of the soap obtained.

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