HAZARDS AND LUBES

Question 1

True or False. Chemical is considered hazardous if it can negatively affect the health of people or the environment.

Answer 1

True

Question 2

Chemicals that can cause cancer

Answer 2

Carcinogens

Question 3

Chemicals that can cause damage to fetus

Answer 3

Teratogens

Question 4

Chemical that can be lethal in high enough dosage

Answer 4

Toxins

Question 5

Chemicals that cause visible destruction of living tissue at the site of contact

Answer 5

Corrosives

Question 6

Chemicals that can cause eversible inflammatory effects on living tissue at the site of contact

Answer 6

Irritants

Question 7

Cause an allergic reaction after repeated exposure to this chemical

Answer 7

Sentisizers

Question 8

What are the four routes that chemical can enter your body

Answer 8

1. ABSORPTION/SKIN AND EYE CONTACT
2. INHALATION
3. INGESTION/SWALLOWING
4. INJECTION

Question 9

It is a unique numeric identifier code assigned to a substance when it enters the CAS Registry Database

Answer 9

Chemical Abstract Service (CAS) Registry Number

Question 10

A system for standardizing and harmonizing the classification and labelling of chemical

Answer 10

GHS

Question 11

The inherent characteristics of a chemical substances and mixtures that are existing in the workplace and in the environment, regardless of quantity that are potentially dangerous

Answer 11

Hazards

Question 12

A document prepared by the manufacturer that contains important physical characteristics, ecological, health, safety, and toxicological information on chemical substances. It is the number one source of information to ensure safe use of hazardous chemicals.

Answer 12

Safety Data Sheet (formerly known as Material Data Safety Sheet)

Question 13

TRIVIA: Safety Data Sheet includes
- Properties of each chemical
- Physical and Environmental Health Hazards
- Protective Measures
- Safety precautions for handling, storing, and transporting the chemical

Question 14

Lubricants is derived from a Latin word, what is that word?

Answer 14

Lubricus

Question 15

What does “lubricus” mean

Answer 15

Slippery

Question 16

What are the 6 characteristics of a good lubricating oil?

Answer 16

1. High boiling point
2. Adequate viscosity
3. Low freezing point
4. High resistance to oxidation
5. Non-corrosive properties
6. Good thermal stability

Question 17

TRIVIA: CLASSIFICATION OF LUBRICANTS
1. Liquids – vegetable, animal, mineral, and blended oils
2. Solids – graphite, talc, chalk
3. Semi-solids – greases, vaselines, waxes
4. Synthetic – silicones, chlorocarbons, polypropylenes
5. Emulsions – oil in water and water in oil

Question 18

These are extracted from crude fat

Answer 18

Animal Fats and Oils

Question 19

What do you call the process of extracting animal fats and oils from crude fat?

Answer 19

Rendering

Question 20

This oil is obtained from crushing seeds

Answer 20

Vegetable oil

Question 21

TRIVIA: Important animal fats and oils
a. lard and lard oil
b. tallow and tallow oil
c. neatsfoot oil
d. fish oils
e. sperm oil
f. whale oil
g. seal oil

Question 22

What are the five important vegetable oils

Answer 22

a. olive oil
b. castor oil
c. rape oil or colza oil
d. palm oil or palm kernel oil
e. cotton seed oil

Question 23

It has lower molecular weight hydrocarbons with 12 to 50 atom

Answer 23

Mineral Oils

Question 24

Are obtained during distillation of petroleum; thus, they are cheap

Answer 24

Mineral Oils 🫵👹

Question 25

How are impurities removed? There are three ways/processes

Answer 25

1. Dewaxing 2. Acid Refining or Lubrication 3. Solvent Refining of the Lubricating Oils

Question 26

In this process, a suitable solvent is selected in which the solubility of the undesirable impurities is more than that in the oil

Answer 26

SOLVENT REFINING OF THE LUBRICATING OILS

Question 27

This is done by thoroughly agitating the oil with the required amount of concentrated sulfuric acid, which acts as a solvent

Answer 27

Acid Refining or Lubrication

Question 28

In this process, the oil and wax are separated using continuous filters or centrifuge

Answer 28

DEWAXING

Question 29

_____ _____ have largely replaced ANIMAL and VEGETABLE OILS because the former is cheaper.

Answer 29

Mineral Oils

Question 30

What are the three types of greases?

Answer 30

1. LIME OR CALCIUM SOAP BASE 2. SODIUM-SOAP 3. ROSIN SOAP

Question 31

They are usually prepared from non-soap thickeners such as carbon black, silica gel, modified clays, etc.

Answer 31

Non-soap Greases

Question 32

Are oily liquids which are not found naturally or not produced directly during the normal manufacturing and refining processes of the petroleum industry

Answer 32

SYNTHETIC LUBRICANTS

Question 33

TRIVIA: Synthetic Lubricants are designed for special jobs such as: a. in metal forming process such as die casting b. hot running bearing and hot rolling mills c. aircraft turbine

Question 34

What are the methods of Lubrication?

Answer 34

1. THICK FILM / FLUID FILM / HYDRODYNAMIC LUBRICATION 2. BOUNDARY LUBRICATION / THIN FILM LUBRICATION