Objective Questions

Question 1

Number of carbon atoms in olvanil

Answer 1

C26H43NO3

Question 2

Definition of ozonolysis

Answer 2

an organic reaction where the unsaturated bonds of alkenes, alkynes, or
azo compounds are cleaved with ozone.

Question 3

Edman degradation

Answer 3

developed by Pehr Edman, is a method of sequencing amino acids in a
peptide.

Question 4

Nearest layer of the atmosphere from the earths surface

Answer 4

troposphere

Question 5

Chemical formula for 11-tetradecenyl acetate

Answer 5

C16H30O2

Question 6

Common contaminant on BTEx process

Answer 6

benzene, toluene, ethylbenzene, and xylenes

Question 7

What is the other name for bulk temperature

Answer 7

mixing cup temperature

Question 8

Where does an enzyme capsaicin commonly found

Answer 8

capsicum

Question 9

Common method for the removal of fine particle in hot airstream common in cement
production

Answer 9

ESP

Question 10

What is the method that Wohler do to break the vital force theory in nature?

Answer 10

Heating NH4Cl
with AgCN to form urea

Question 11

What is the common form of nitro-glycerol?

Answer 11

Nitroglycerin

Question 12

Definition of polar covalent bond

Answer 12

A bond in which electrons are shared between elements
having a difference in electronegativity of between 0.5 and ~2.0.

Question 13

Arrange in increasing melting point

Answer 13

oleic, palmitic, stearic

Question 14

What is the difference between catabolism, anabolism and metabolism?

Answer 14

Cata-the breakdown of
complex molecules in living organisms to form simpler ones, together with the release of
energy, ana- the synthesis of complex molecules in living organisms from simpler ones together
with the storage of energy

Question 15

What law is PRC modernization act?

Answer 15

REPUBLIC ACT NO. 8981

Question 16

Primary use of ethylene

Answer 16

ripening of fruits

Question 17

What happen to the pH of carbonated drinks if it open in atmospheric condition?

Answer 17

increase

Question 18

Formula red lead

Answer 18

Lead(II,IV) oxide

Question 19

Process of breaking down a large isotope into smaller isotopes

Answer 19

nuclear fission,

Question 20

Author of octet rule

Answer 20

gilbert lewis

Question 21

Adolf baeyers contribution in medicine, made by reacting malonic acid and urea with a catalyst
is called?

Answer 21

barbituric acid

Question 22

Which layer of the atmosphere contains the ozone layer?

Answer 22

Stratosphere

Question 23

Composition of acid in acid rain?

Answer 23

sulphuric and nitric acids

Question 24

How to differentiate alkane, alkene and alkyne?

Answer 24

reaction with Br2

Question 25

Formula of alar

Answer 25

C6H12N2O3

Question 26

Arrange in increasing toxicity level

Answer 26

heptachlor , dieldrum , Cr, DDT, arsenic

Question 27

Polymer use in bullet proof vest

Answer 27

Linear Polyethylene

Question 28

How do you differentiate electromagnetic radiation?

Answer 28

Wavelength

Question 29

Who discovered resonance?

Answer 29

o Linus Pauling

Question 30

Functional groups in thiotic acid

Answer 30

carboxylic group

Question 31

Definition of functional group

Answer 31

specific groups of atoms or bonds within molecules that are responsible for the characteristic chemical reactions of those molecules

Question 32

Product of reaction between acyl halide and an alcohol

Answer 32

Ester

Question 33

In stem cell studies, a chemical known as telomeres is attached to the chromosome to promote longer life. How would you apply this as a chemical engineer in the field of agriculture and food?

Answer 33

Genetically enhance plants to prolong shelf life

Question 34

What is the first step in utilizing proteins

Answer 34

Hydrolysis

Question 35

Liquid Nitrogen is placed in an Erlenmeyer flask. Hard-boiled egg is then placed on top of the opening, what will happen?

Answer 35

Egg will be sucked in

Question 36

You are an environmental engineer sent to a place with the cholera epidemic, what the best thing to do?

Answer 36

Treat water supply

Question 37

What are plasmids?

Answer 37

Plasmids are small DNA molecules within a cell that are physically separated from a chromosomal DNA and can replicate independently

Question 38

The Nobel Prize for radioactivity discovery was shared between Curie and Roentgen. Who coined the word “serendipity” in 1754?

Answer 38

Horace Walpole

Question 39

What is the chemical used in sunblock?

Answer 39

ZnO

Question 40

Ketone and aldehyde in alcohol will form?

Answer 40

Acetals/Ketals

Question 41

What is the formula of aspirin?

Answer 41

Aspirin is acetylsalicylic acid – acetyl + benzene ring + acetyl substituent on the benzene ring

Question 42

What is gluconeogenesis?

Answer 42

Formation of glucose from non-carbohydrate sources.

Question 43

Why carbon dating?

Answer 43

Because C14

Question 44

Can oxygen be synthesized from nitrogen?

Answer 44

yes,by the bombardment of alpha particles

Question 45

Which element is difficult to remove from sewage and wastewater and at the same time, it contributes to bacterial and algae overgrowth in freshwater?

Answer 45

nitrogen

Question 46

There are approximately 20 amino acids in human protein. Name 3 essential amino acids

Answer 46

Arginine, lysine, phenylalanine

Question 47

How do two free radicals react when they encounter each other?

Question 48

How does alpha, beta and gamma particle affect the mass number of an atom?

Answer 48

no change

Question 49

Pollutant produced from coal and petroleum

Answer 49

CO2,CO,NOx

Question 50

Who discovered x-ray

Answer 50

Wilhelm Roentgen

Question 51

Which is nuclear fusion

Answer 51

the radiant energy from sun

Question 52

Instrument in measuring Radiation

Answer 52

Geiger Counter and Chamber

Question 53

How many neutrons are there in C-14

Answer 53

8

Question 54

Iodine vapor forms iodine crystals when it touches a cold surface, what is the reverse the process being described?

Answer 54

Sublimation

Question 55

Notation on alkane containing C

Answer 55

chloro

Question 56

Description of primary cell and secondary cell

Answer 56

A primary cell or battery is one that cannot easily be recharged after one use, A secondary cell or battery is one that can be electrically recharged

Question 57

Particle with the same mass of proton?

Answer 57

Neutron

Question 58

This contains genetic information

Answer 58

DNA

Question 59

What happens to the melting point of a saturated fatty acid if -CH2- is increased?

Answer 59

increase

Question 60

What compound is a ketone but is not a carbohydrate but is useful commercially?

Answer 60

acetone