WorksheetsENGINEERING CHEMISTRY QUIZ
Total questions: 40
Worksheet time: 21mins
The Law of Conservation of Energy states:
Energy can created or destroyed but not transformed
Energy cannot be created or destroyed, it can only transformed from one form to another form
Energy can't be created, destroyed or transformed
All the above
Stretched bow and arrow is
Potential or kinetic?
Kinetic
Potential
What is the picture about?
a. air pollution
b. rubbish
c. littering
d. water pollution
How to keep fresh air?
a. make more air pollution
b. produce more carbon dioxide
c. plant trees
d. pick up flowers in the garden
What command is it ?
Switch off the cable!
Turn on the cable!
Shut down the cable!
Unplug the cable!
Close the tap is the way to save ......
Air
Water
Electric
Wind
True or False: Recycling is to turn old trash and make it into something new!
True
False
Which are recyclable items?
Used glass bottles
Plastics
Metal cans
All of the above
Green chemistry is regarded as a reduction process. Which of the following aspects are the targets of reduction?
(1) Cost of production
(2) Use of catalyst
(3) Risk and hazard
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Which of the following are sources of biomass to replace natural gas as the feedstock of many industrial processes?
(1) Seaweed from large-scale farming
(2) Waste paper from schools and offices
(3) Methane gas from landfill sites
(1) and (2) only
(1) and (3) only
(2) and (3) only
(1), (2) and (3)
Green Chemistry is the synonymous with remediation, removing hazardous chemicals from the environment.
True
False
The Principles of Green Chemistry include:
Raw materials should, where practicable, be renewable.
Chemical products should be designed to be degradable to innocuous products when disposed of and not be environmentally persistent.
Synthetic methods should, where practicable, use or generate materials of low human toxicity and environmental impact.
It is better to treat waste formation than to prevent it before it is formed.
Green chemistry is the approach in chemical sciences that
efficiently uses renewable raw materials
avoids using toxic or hazardous reagents
exceeds costs for traditional manufacturing
reduces sustainable feedstock use in manufacturing
Soil pollution refers to the contamination of soil with abnormal concentration of:
toxic substances
land
oxygen
Some factors that produce soil pollution are
pesticides
waste produced by factories
water
trash
What gas does garbage release when it is buried?
Carbon dioxide
Oxygen
Methane
Which disease can be produced by soil pollution ?
Cancer
Heart disease
Deformities
Skin problems
We should pick up the trash to stop soil pollution
TRUE
FALSE
How can we produce less waste?
Only use paper if necessary
Avoid plastic packaging
save water
throw trash in the ocean
We should be careful when we throw batteries or computer equipment
TRUE
FALSE
Green House gases
absorb the sun's radiation and trap heat
are good for our health
absorb gravity and keep us attached to Earth
expulse radiation to the sun and prevent us from getting to warm
What activity is increasing green house gases?
Ocean and air currents
Volcanic activity
Plants activity
Human activity
what is greenhouse effect
the process of reflecting the heat from the back to the outer space.
it is the process of trapping of heat from the sun by the greenhouse gases.
what happens when air is heated?
it rises
it decreases
no effect
How would Earth be different without greenhouse gases in its atmosphere?
More heat from solar radiation would escape into space
More solar radiation would be reflected back into space
More solar radiatio would penetrate Earth's crust and mantle
More heat from solar radiation would be stored in Earth's crust
What gas is known for increasing the amount of "trapped" heat in the atmosphere?
Oxygen
Nitrogen
Methane
Carbon Dioxide
