527 Q1 Ch1 Intro to CC

Most of the present human activities capture the effluent (عادم) CO2 before it is vented to the atmosphere.

• True.

• False.

The current PRIMARY uses of CO2 are

(choose all that applies)

• Enhanced Oil Recovery

• Food Industry

• Production of plastics

• Production of cement

It is more feasible to capture CO2 from

• concentrated (point) sources, e.g., power plants.

• mobile sources, e.g., vehicles.

• the atmosphere.

Direct air capture of CO2 is much less efficient than other CC technologies because

(choose all that applies)

• CO2 concentration in the atmosphere is quite low.

• the CC equipment must process enormous amounts of air daily to capture a reasonable amount of CO2.

• CO2 is chemically bonded to other gases in the air.

• human activities emit little amounts of CO2 into the atmosphere annually.

To stabilize the global mean temperature, our CO2 emissions

• can increase at moderate rates from year to year.

• should remain equal to their current annual value for all future years.

• have to cease (تتوقف) completely today.

The carbon-climate response is defined as

• the ratio of temperature change to cumulative CO2 emissions.

• how much CO2 the global atmosphere can be saturated with.

• how fast countries are responding to the need for reducing their CO2 emissions.

CO2 is not the only GHG. There are also CH4, N2O, HFCs, PFCs, and SF6.

Non-CO2 GHG emissions constitute approximately _______ of total CO2 equivalent emissions.

• one-third

• half

• 10%

• 1%

Globally, which activity/industry has the largest CO2 emissions?

• Cement production

• Refineries

• Iron and steel production

• Fossil-fuel combustion

Which of the following sectors of human activities produces the most CO2 emissions?

• Electricity production

• Transportation/mobility

• Industrial

• Commercial

• Residential (سكني)

What are the factors governing the appropriateness of a CC technology to a certain application?