LQ3 Old Test

Question 1

It is the product of chlor-alkali process that can be ued as an important energy source?

Answer 1

H2

Question 2

It has consumed the lowest electricity and produces the highest purity of NaOH

Answer 2

Membrane cell process

Question 3

These are the products of chlor-alkali industry

Answer 3

Cl2, H2, NaOH

Question 5

The electrolysis process in chlorine-alkali industry uses a permeable membrane to facilitate the exchange of ions, converting Cl- first to Cl2 and then, Na+ to NaOH. This also requires a liquid level difference to prevent backflow

Answer 5

Diaphragm cell process

Question 6

These are the products of chlor-alkali industryo

Answer 6

Cl2, H2, NaOH

Question 7

The brin process used by the british oxygen company was developed in which period?

Answer 7

Mid 1880’s

Question 8

The production of syngas from methane is possible through which of the following processes?

Answer 8

Steam reforming

Question 9

What are the application of N2 in any industry?

Answer 9

Tank and pipeline purging, sparging, molten aluminum degassing

Question 10

This process allows the creation of flat steel sheets

Answer 10

Rolling

Question 11

The first step in basic oxygen steelmaking is called

Answer 11

Charging

Question 12

The bayer process was developed on which time period?

Answer 12

1885 to 1890

Question 13

The process of extracting aluminum from alumina through electrolysis is called

Answer 13

Hail-heroult process

Question 14

The process of converting bauxite into aluminum oxide using NaOH is called

Answer 14

Bayer process

Question 15

It is defined as the discipline concerned with the production of metal products through high temperature chemical reactions

Answer 15

Pyrometallurgy

Question 16

The raw materials for the blast furnace is called

Answer 16

Charge

Question 17

The iron ore that contains iron in the form of Fe2O3 is called

Answer 17

Haematite

Question 18

There are cements that can settle or harden in dry conditions

Answer 18

True

Question 19

Calcination is a ____ process

Answer 19

Endothermic

Question 20

These are the companies that produces cement

Answer 20

1. Cemex holding Ph inc.
2. Holcim Ph

Question 21

The process of decomposition of calcium carbonate into calcium oxide and carbon dioxide in cement industry is called

Answer 21

Calcination

Question 22

The product of rotary kilns is called

Answer 22

Clinker

Question 23

The collective term for processing of raw materials in ceramic industry is called

Answer 23

Beneficiation

Question 24

These are the elements present in clay used for ceramic industry

Answer 24

Aluminum, silicon, and oxygen

Question 25

This type of forming of ceramics involves dry pressing, isostatic compaction and vibratory compaction

Answer 25

Dry forming

Question 26

It is a process of converting the materials for ceramic into a dense, cohesive body with uniform structure, through a controlled heat process

Answer 26

Sintering

Question 27

The bath used in pilkington process is made up of

Answer 27

Tin

Question 28

The term to describe broken glass being recycled in glass manufacturing plants is called

Answer 28

CULLETS

Answer 29

CULLETS

Question 30

In the production of sulfuric acid, what is the catalyst used in converting sulfur dioxide to sulfur trioxide?

Answer 30

Vanadium pentoxide

Question 31

An industrial chemical that is used in certain processes to prevent contact with air

Answer 31

Nitrogen

Question 32

What is the number one industrial chemical worldwide in terms of production volume

Answer 32

Sulfuric acid

Question 33

It is used in the production of antifreeze agents

Answer 33

Ethylene

Question 34

It is also called lye, and is the most widely used industrial alkali

Answer 34

Sodium hydroxide

Question 35

Its major use is in the production of polyvinyl chloride

Answer 35

Ethylene dichloride

Question 36

Which industrial chemical release substantial heat when diluted, high enough to ignite combustible materials?

Answer 36

Sodium hydroxide

Question 37

The main products of chlorine-alkali industry can be obtained through

Answer 37

Electrolysis

Question 38

Slow cooling of glass to increases it strength is a process called

Answer 38

Annealing

Question 39

What is the most common process used for the purification of hydrogen?

Answer 39

Pressure Swing Absorption (note: be careful kasi may adsorption sa choices dapat aBsorption)

Question 40

Which one is a fuel gas: nitrogen, acetylene, carbon dioxide, or oxygen?

Answer 40

Acetylene

Question 40

When air is processed to produce argon, nitrogen, and oxygen, the first to be collected is:

Answer 40

Nitrogen

Question 41

Up to what pressure is acetylene compressed for filling into cylinders?

Answer 41

300 psi

Question 42

What is the boiling point of argon?

Answer 42

-186 degrees Celsius

Question 43

Which of the following is a characteristic of acetylene: flammable, toxic, corrosive, or reactive?

Answer 43

Flammable

Question 44

Which are the variable mixture components of synthesis gas?

Answer 44

Carbon monoxide and hydrogen

Question 45

Which of the following is considered refrigerant gas: oxygen, hydrogen, carbon dioxide, or nitrogen?

Answer 45

Nitrogen

Question 46

Who invented the pneumatic trough for gas collection?

Answer 46

Stephen Hales

Question 47

Which reaction produces acetylene?

Answer 47

Reaction between calcium carbide and water

Question 48

What type of Portland cement is useful in cold weather concreting applications?

Answer 48

Type III

Question 49

The upper part of the kiln in the production of cement is called:

Answer 49

Calcination zone

Question 50

In the manufacture of Portland cement, the temperature around the clinkering zone when raw materials are burned is

Answer 50

1500-1700 degrees Celsius

Question 51

Which of the following statements is correct with regard to the production of Portland cement? - The wet process is used for hard materials - The dry process produces superior quality of cement - Overall cost for both wet and dry process is the same - The dry process requires less processing time compared to the wet process

Answer 51

The dry process requires less processing time compared to the wet process

Question 52

Which of the following is not a raw material in the production of Portland cement? - Blast furnace slag - clayey raw materials - sand - lime-containing raw materials

Answer 52

Sand

Question 53

In the second stage of crushing the raw materials in the production of cement _______ is used

Answer 53

Ball mill

Question 54

In the production of cement, what is the temperature around the calcination zone

Answer 54

1000 degrees Celsius

Question 55

What is the required proportion of limestone and clay in the production of Portland cement?

Answer 55

5:1

Question 56

What is the purpose of adding gypsum to the burned cement clinker when grinding?

Answer 56

To control the settling time of cement

Question 57

The burning of raw materials in the production of Portland cement is done in a _______

Answer 57

Rotary kiln

Question 58

What type of Portland cement is used for applications that require an extreme resistance to sulfates?

Answer 58

Type V

Question 59

The lower part of the kiln in cement production produces

Answer 59

clinkers

Question 60

What is the calcination temperature in the production of aluminum?

Answer 60

960-1100 degrees Celsius

Question 61

It is a thermal process of converting loose fine particles into a solid coherent mass by heat and/or pressure without fully heating the particles to the point of melting

Answer 61

Sintering

Question 62

It is a tower shaped structure lined with heat resistance brick used in the production of iron

Answer 62

Blast furnace

Question 62

It is the principal industrial means of refining bauxite to produce alumina

Answer 62

Bayer's process

Question 63

What is the process of heating steel to a fixed temperature and cooling it at a slow and controlled rate to enhance the ductility of the metal making them easier to fabricate into finished product?

Answer 63

Annealing

Question 64

What is the purpose of rolling in the production of steel?

Answer 64

To make the thickness uniform and impart a desired mechanical property

Question 65

Steel with high carbon content used to make blades

Answer 65

Wootz steel

Question 66

How many percent carbon is cast iron?

Answer 66

2-4%

Question 67

What is the product formed by pouring molten steel into a mold cavity?

Answer 67

Steel casting

Question 68

It is an alloy composed of iron and carbon

Answer 68

Steel

Question 69

What is the waste material in the iron making process?

Answer 69

Slag

Question 70

The temperature of glass melting furnace is around

Answer 70

1500 degrees Celsius

Question 71

The bonding in ceramic is

Answer 71

Partially ionic and partially covalent

Question 72

Glass is a mixture of

Answer 72

Metallic silicates

Question 73

It is the process by which ceramics are thermally consolidated into a dense cohesive body composed of fine, uniform grains

Answer 73

Firing

Question 74

An inorganic amorphous solid that is hard

Answer 74

Glass

Question 75

It is a process of removing the impurities of the raw materials in ceramic manufacture

Answer 75

Beneficiation

Question 76

Which of the following types of glass accounts for about 0-% of manufactured glass? - soda-lead glass - potash lead glass - soda-lime silicate glass - borosilicate glass

Answer 76

Soda-lime silicate glass

Question 77

Which of the following is not a property of ceramic? - hard and durable - chemically inert - high melting point - high thermal conductivity

Answer 77

High thermal conductivity

Question 78

Which of the following statements is/are correct with regard to ceramics? - They are brittle - They are inorganic substances - They are good thermal insulators - All of these

Answer 78

All of these

Question 79

The primary difference between a ceramic and a glass is based on its ________

Answer 79

Crystallinity