Pollution of Ai...

Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.

(i) Scrubbers are used to remove suspended particulate matter from factories.
(ii) Excess carbon monoxide present in the atmosphere traps a lot of heat and leads to warming of Earth's surface.
(iii) The suspended particulate matter present in the air is known as aerosol.
(iv) Kyoto protocol was signed to reduce the emission of greenhouse gases.

Trees are planted along the roadside to reduce pollution from motor vehicles. How do trees help to reduce pollution?

(i)  They absorb traffic noise.
(ii) They take in carbon dioxide.
(iii) They trap dust and soot from the exhaust pipes of vehicles.

Which of the following statements about eutrophication is/are correct?

(i)  It increases the amount of sunlight reaching the bottom of the water body.

(ii) It occurs due to excessive enrichment of the water in river and lakes.

(iii) It results in decrease in water clarity, dissolved oxygen and aquatic life.

Read the given statements and select the correct option.

Statement 1: Carbon dioxide helps in maintaining temperature of the Earth.
Statement 2: Carbon dioxide traps heat of the reflected infrared radiations and stops heat from escaping the Earth's surface.

Which of the following statements is incorrect?

Select the pair of diseases that are caused by contaminated water.

Air pollutants are harmful to living things. Which of the following is/are their harmful effect(s)?

(i)  They form acid rain.
(ii) They cause breathing problems in humans.
(iii) They interfere with photosynthesis in plants.
(iv) They result in the depletion of ozone layer.