Environmental issues practice · Mixed difficulty

Initially BOD of primary effluent in aeration tank increases in STPs because

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

Algal blooms imparts a distinct colour to water due to

Which statement represents the harmful effect of depletion of earth’s ozone layer?

Examples of regional pollution are

Chipko movement (1974) is the world’s known eco development programme, started by Sunder Lal Bahuguna in Tehri Garhwal (Uttarakhand). It is associated with

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

Asbestosis is caused due to:

Consider the following statements about Ramesh Chandra Dagar’s work in the field of organic farming
I. Ramesh Chandra Dagar’s work includes bee-keeping, dairy management, water harvesting, composting and agriculture in a chain of processes
II. In this process there is no need to use chemical fertilisers for crops as cattle excreta is used as manure
III. Crop waste is used for making compost which is used as natural fertilizer
IV. Compost generates natural gas which is used for energy needs of farm
Which of the statements given above are correct?

In context with the Environment,
the price charged to deliver
municipal solid waste to a landfill,
waste-to-energy facility, or
recycling facility is known as ______?

Loss of forest, urbanization, increasing pollution are all due to

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

The gradual continuous increase in average temperature of surface of the earth as a result of increase in concentration of $\mathrm{C}{\mathrm{O}_2}$ and CFCs is termed as

Ramesh Chandra Dagar is associated with

Assertion (A): CNG is better than diesel and petrol
Reasons (R) : CNG burns most efficiently and it is cheaper than petrol or diesel. CNG can not be adulterated like petrol or diesel

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

Minamata occurs in

Photochemical smog formed in congested metropolitan cities mainly consist of

Polyblend

Which of the following diseases is related to cadmium pollution?

Algal bloom in lake causes all the effects given below, except

In an area where DDT had been used extensively, the population of birds declined significantly because

The concept of Joint Forest Management (JFM) involves

Which of the following is/are correct regarding Montreal Protocol?
(i) Persistent organic pollutants.
(ii) Global warming and climate change.
(iii) To control the emission of ozone depleting substances.
(iv) Biosafety of genetically modified organisms.

Consider the following statements
I. Algal blooms are formed by free floating algae
II. Algal bloom causes fish mortality and deterioration of water quality
III. Water hyacinth, the world’s most problematic aquatic weed is also called ‘Terror of Bengal’
Which of the statements given above are correct about algal blooms?

Which one of the following is a correct option with reference to pathogenic bacteria and DDT?

Increase in concentration of a toxicant at successive trophic levels is called

Consider the following statements about harmful effects of radioactive pollution
I. Radiations from nuclear wastes causes mutation at a very high rate
II. At high doses, nuclear radiations are lethal
III. At low doses, radiations cause disorders and cancer
Which of the statements given above are correct?

The fertile top soil is removed by human activities like