Emission | MCQs

Explanation

Static electricity is used in electrostatic precipitators to remove smoke and dust particles from gases in smokestacks.

Charged particles are attracted to plates with opposite charge, cleaning the air before release.

Explanation

The European Union is set to become the largest economy Bloc in the Word to complete ban save conventional (combustion engine) cars by 2035

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The European Union on Wednesday proposed an effective ban on the sale of new petrol and diesel cars from 2035

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California bans the sale of gas-powered cars by 2035 to curb climate change.

Explanation

According to Kirchhoff's law:

Coefficient of emission (e) + Coefficient of reflection (r) + Coefficient of transmission (t) = 1

Given: t = 0.33, r = 0.64

e + 0.64 + 0.33 = 1

e = 1 - 0.97

= 0.03

Explanation

A mature tree absorbs carbon dioxide at a rate of 48 pounds per year.

In one year, an acre of forest can absorb twice the CO2 pgroduced by the average car's annual mileage.