Environmental Engineering

Question 1

It is known as Water Quality Guidelines and General Effluent
Standards of 2016.

a. DAO 34
c. RA 9275
b. DAO 35
d. DAO No. 2016-08

Answer 1

DAO No. 2016-08

Question 2

Clean Water Act

Answer 2

RA 9275

Question 3

Class of water intended for primary contact recreation such as bathing, swimming, skin diving, etc.

Answer 3

Class B

Question 4

Gas responsible for the rotten egg odor of wastewater.

Answer 4

hydrogen sulfide

Question 5

useless, unwanted or discarded materials resulting from normal community activities

Answer 5

waste

Question 6

– generally the indication of the age of sewage

Answer 6

Color

grayish - fresh
black - septic

Question 7

comes from the septic decomposition at organic wastes and is due
to the presence of gases such as

Answer 7

Odor

Question 8

is part of water supply to the community, industry/manufacturing,
agriculture, etc. which has been mixed with suspended or dissolved solid, and usually contains pollutants.

Answer 8

wastewater

Question 9

the amount of suspended matter in water/wastewater and is obtained by measuring its light scattering ability. It is also a measure of the ability of sunlight to pass through water and the ability of water to disperse different materials disposed into it

Answer 9

Turbidity

Question 10

lowers the solubility of oxygen in water and increase the rate at which oxygen-consuming microbes attack organic waste

Answer 10

Temperature

Gas: inc T = dec Solubility

Question 11

– solid residue when water is evaporated at 103 – 1050C.

Answer 11

Total Solids

TS = TDS+TSS

Question 12

Which of the following apparatus is not used in measuring turbidity?
a. Jackson Turbidimeter
b. Secchi Disk Depth
c. Photoelectric Colorimeter
d. none of these

Answer 12

Photoelectric Colorimeter

Question 13

The resistance of water to the passage of light through it is a measure

Answer 13

Turbidity

Question 14

Sodium ions contribute to which characteristics of water

Answer 14

Total Dissolved Solids

Question 15

The total solids in water are due to the presence of
a. suspended and dissolved solids
b. suspended and floating solids
c. colloidal and settleable solids
d. colloidal and bacterial load

Answer 15

. suspended and dissolved solids

Question 16

ny alteration in the physical, chemical or biological properties of the environment (air, water and land) which adversely affects its quality and/or aesthetic use.

Answer 16

Environmental Pollution

Question 17

describes the chemical, physical, and biological characteristics of water with respect to its suitability for a particular use

Answer 17

Water Quality

Question 18

Class AA
Class A
Class B
Class C
Class D

Answer 18

AA - primary having water sheds, uninhabitated, approved disinfection

A- public water supply II. water supply req conventional treatment

B- recreational water class I. for primary contact (bathing, fishing etc)

C- fishery water, Rec class2 boating, agriculture, irrigation

D- Navible waters

Question 19

actual quantity of free O2 present in water (biological characteristic of water)

Answer 19

Dissolved Oxygen

Question 20

– a measure of the amount of O2 needed to oxidize completely an organic matter whose chemical formula is known (biological characteristic of water)

Answer 20

Theoretical Oxygen Demand

Question 21

–a measure of the amount of O2 needed by microorganism to decompose biodegradable organics at specified time (5 days), temperature (200C) and pH (7)

Answer 21

Biological Oxygen Demand

Question 22

– a measure of the amount of O2 needed to oxidize organics using strong oxidizing agents (KMnO4 or K2Cr2O7) in acid

Answer 22

Chemical Oxygen Demand

Question 23

(Chemical Characteristics of Wastewater)

– a measure of the acidity or alkalinity of water

Answer 23

pH

Question 24

– basic components of fertilizer, serves as nutrients for microbial growth in particular algae. (Chemical Characteristics of Wastewater)

Answer 24

Nitrogen and Phosphorus

Question 25

– refers to the heavy metals which are toxic even in small
concentrations(Chemical Characteristics of Wastewater)

Answer 25

Trace Metals

Question 26

National Water and Air Pollution Control Commission Act (1964)

RA9729
RA3931
RA8749
RA9003

Answer 26

RA3931

Question 27

Toxic Substances and Hazardous Waste Management Act(1990)

RA9729
RA3931
RA8749
RA6969

Answer 27

RA6969

Question 28

Clean Air Act of 1999

RA9729
RA3931
RA8749
RA6969

Answer 28

RA8749

Question 29

Ecological Solid Waste Management Act (2000)

RA9729
RA9003
RA8749
RA6969

Answer 29

RA9003

Question 30

Clen Water Act of 2004

RA9729
RA9275
RA8749
RA6969

Answer 30

RA9275

Question 31

Climate Change Act of 2009

RA9275
RA9729
RA8749
RA6969

Answer 31

RA9729

Question 32

Environmental Impact Statement System(1978)

PD856
PD1586
RA9729
RA8749

Answer 32

PD1586

Question 33

Sanitation Code of the Philippines

PD856
PD1586
RA9729
RA8749

Answer 33

PD856

Question 34

Updated Water Quality Guidelines and General Effluent Standards for Selected Parameters

DAO2018-12
DAO2016-08
DAO2021-19
DAO2021-15

Answer 34

DAO 2021-19

Question 35

Protecting the ozone layer by phasing out CFCs, HFCs, and HCFCs.

Kyoto
Montreal
Stockholm Convention
Agenda21

Answer 35

Montreal

Question 36

Limiting and reducing Green House Gas emissions

Kyoto
Montreal
Stockholm Convention
Agenda21

Answer 36

Kyoto Protocol

Question 37

Elimiinating or restricting production and use of persistent organic pollutants (POPs)

Kyoto
Montreal
Stockholm Convention
Agenda21

Answer 37

Stockholm Convention

Question 38

Limiting global temperature rice in this century to 2degC

Stockholm Convention
Agenda21
Paris Agreement
Basel Convention

Answer 38

Paris Agreement

Question 39

provides blue print for action towards sustainable development

Stockholm Convention
Agenda21
Paris Agreement
Basel Convention

Answer 39

Agenda 21

Question 40

Miscellaneous Processes

Kraft - paper
Hoepner - copper or iron sufides fused
Barff - H from H2O gas

Answer 40

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