Objective Questions Flashcards
Number of carbon atoms in olvanil
C26H43NO3
Definition of ozonolysis
an organic reaction where the unsaturated bonds of alkenes, alkynes, or
azo compounds are cleaved with ozone.
Edman degradation
developed by Pehr Edman, is a method of sequencing amino acids in a
peptide.
Nearest layer of the atmosphere from the earths surface
troposphere
Chemical formula for 11-tetradecenyl acetate
C16H30O2
Common contaminant on BTEx process
benzene, toluene, ethylbenzene, and xylenes
What is the other name for bulk temperature
mixing cup temperature
Where does an enzyme capsaicin commonly found
capsicum
Common method for the removal of fine particle in hot airstream common in cement
production
ESP
What is the method that Wohler do to break the vital force theory in nature?
Heating NH4Cl
with AgCN to form urea
What is the common form of nitro-glycerol?
Nitroglycerin
Definition of polar covalent bond
A bond in which electrons are shared between elements
having a difference in electronegativity of between 0.5 and ~2.0.
Arrange in increasing melting point
oleic, palmitic, stearic
What is the difference between catabolism, anabolism and metabolism?
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
What law is PRC modernization act?
REPUBLIC ACT NO. 8981
Primary use of ethylene
ripening of fruits
What happen to the pH of carbonated drinks if it open in atmospheric condition?
increase
Formula red lead
Lead(II,IV) oxide
Process of breaking down a large isotope into smaller isotopes
nuclear fission,
Author of octet rule
gilbert lewis
Adolf baeyers contribution in medicine, made by reacting malonic acid and urea with a catalyst
is called?
barbituric acid
Which layer of the atmosphere contains the ozone layer?
Stratosphere
Composition of acid in acid rain?
sulphuric and nitric acids
How to differentiate alkane, alkene and alkyne?
reaction with Br2
Formula of alar
C6H12N2O3
Arrange in increasing toxicity level
heptachlor , dieldrum , Cr, DDT, arsenic
Polymer use in bullet proof vest
Linear Polyethylene
How do you differentiate electromagnetic radiation?
Wavelength
Who discovered resonance?
o Linus Pauling
Functional groups in thiotic acid
carboxylic group
Definition of functional group
specific groups of atoms or bonds within molecules that are
responsible for the characteristic chemical reactions of those molecules
Product of reaction between acyl halide and an alcohol
Ester
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?
Genetically enhance plants to prolong shelf life
What is the first step in utilizing proteins
Hydrolysis
Liquid Nitrogen is placed in an Erlenmeyer flask. Hard-boiled egg is then placed on top of the
opening, what will happen?
Egg will be sucked in
You are an environmental engineer sent to a place with the cholera epidemic, what the best
thing to do?
Treat water supply
What are plasmids?
Plasmids are small DNA molecules within a cell that are physically
separated from a chromosomal DNA and can replicate independently
The Nobel Prize for radioactivity discovery was shared between Curie and Roentgen. Who
coined the word “serendipity” in 1754?
Horace Walpole
What is the chemical used in sunblock?
ZnO
Ketone and aldehyde in alcohol will form?
Acetals/Ketals
What is the formula of aspirin?
Aspirin is acetylsalicylic acid – acetyl + benzene ring + acetyl
substituent on the benzene ring
What is gluconeogenesis?
Formation of glucose from non-carbohydrate sources.
Why carbon dating?
Because C14
Can oxygen be synthesized from nitrogen?
yes,by the bombardment of alpha particles
Which element is difficult to remove from sewage and wastewater and at the same time, it
contributes to bacterial and algae overgrowth in freshwater?
nitrogen
There are approximately 20 amino acids in human protein. Name 3 essential amino acids
Arginine, lysine, phenylalanine
How do two free radicals react when they encounter each other?
How does alpha, beta and gamma particle affect the mass number of an atom?
no change
Pollutant produced from coal and petroleum
CO2,CO,NOx
Who discovered x-ray
Wilhelm Roentgen
Which is nuclear fusion
the radiant energy from sun
Instrument in measuring Radiation
Geiger Counter and Chamber
How many neutrons are there in C-14
8
Iodine vapor forms iodine crystals when it touches a cold surface, what is the reverse the
process being described?
Sublimation
Notation on alkane containing C
chloro
Description of primary cell and secondary cell
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
Particle with the same mass of proton?
Neutron
This contains genetic information
DNA
What happens to the melting point of a saturated fatty acid if -CH2- is increased?
increase
What compound is a ketone but is not a carbohydrate but is useful commercially?
acetone
