Environmental issues practice · Medium

According to Kyoto protocol, the major nations abide to reduce concentration of green –house gases by

Consider the following statements
I. Soil without a vegetation cover is eroded by both wind and water
II. Excessive irrigation results in water logging of soil
III. Increased salt concentration damages agriculture
Which of the statements given above are correct?

Which of the following process is a cyclic, zero-waste procedure where waste products from one process are cycled in as nutrients for other processes, allowing maximum utilisation of resources and increasing the efficiency of production?

Which of the following is not shortwave radiation?

Delhi is one of the most polluted cities of the world. Which of the following steps were taken by the government to reduce vehicular pollution in Delhi
I. Phasing out of old vehicles
II. Use of unleaded petrol
III. Use of low sulphur petrol and diesel
IV. Use of catalytic converters in vehicles
V. Applying stringent pollution level norms for vehicles
VI. Switch over of public transport from diesel/petrol to CNG
Which of the statements given above are correct?

David is a hardworking environmentalist who has to travel 10 kilometres to his office daily. He drives to and from his destination in a sedan which releases a substantial amount of vehicular exhaust into the atmosphere. This concerns David due to the growing pollution in the city. Which of the following measures can he take to reduce the emission of pollutants from his car?

Assertion: Contribution of $C{O_2},C{H_4},CFCs$ and
N2O towards green house effect is respectively
60%, 6%, 14% and 20%.

Reason: Green house gases are radioactively
active gases and which prevent the short
wavelength radiations emitted by earth to escape
into space.

A: Ozone is a catalyst depleting CFC.

R: Good ozone is troposphere protects the living organisms from harmful effects of U.V radiations.

Green house effect is the cumulative result of the influences of certain gases. Identify the gas, which is not involved in this influence?

Which of the following are the causes for deforestation?
I. Human settlements
II. Forest fires
III. Hydroelectric projects
IV. Overgrazing by livestock
V. Demand of wood
Which of the statements given above are correct?

Consider the following statements I. Reforestation is the process of restoring a forest that once existed but was removed at some point of time in the past II. Reforestation may occur naturally in a deforested area III. A tree plantation movement or Van Mahotsava is being carried out in India since 1982 Which of the statements given above are correct?

Consider the following statements regarding deforestation I. It is removal, decrease or deterioration of forest cover of an area II. It leads to soil erosion III. Deforestation often causes flash floods IV. Deforested area can be used variously as cropland, industrial area, residential area, fallow land, etc. Which of the statements given above are correct?

Reforestation is useful for

Montreal protocol aims at

Eutrophicated lake has BOD

To remove which pollutants, enzymatic filters are used?

Amrita Devi Bishnoi wildlife protection award is given to the individuals or communities from

Which method is used to remove particulate matter present in exhaust of thermal power plant?

In India, Jhum cultivation is practiced mainly in

Irrepairable goods, computers and other electronic devices are known as

What is soil erosion?

Consider the following statements about eutrophication
I. Eutrophication is the natural ageing of a water body by nutrient enrichment
II. The accelerated ageing of lakes due to sewage and agricultural and industrial wastes is called cultural or accelerated eutrophication
III. The plant nutrients responsible for eutrophication are nitrates and phosphates
IV. Phosphates and nitrates accelerate the growth of algae which utilise oxygen and may deoxygenate the water enough to kill the fish and other aquatic animals
Which of the statements given above are correct?

Consider the following statement about polyblend
I. In 1998, Ahmed Khan developed polyblend, a fine powder of recycled modified plastic
II. Polyblend has been mixed with bitumen to lay roads in Bengaluru
III. Polyblend enhances bitumen’s water repellant properties and helps to increase the life of road
Which of the statements given above are correct?

Which one of the following is mainly responsible for green houses effect?

Concentration of DDT for first tropic level (phytoplanktons) and top trophic level (fish eating birds) is _____ respectively in aquatic food chains if DDT is 0.003 pb in water.

Ozone hole results in

Foul smell in the water bodies of tanks, ponds ,etc, is due to

Ramesh Chandra Dagar is associated with

The oxygen concentration at the floor of the deep ponds and lakes is very low because of the

Minamata occurs in