Acid rain is caused by the emission of sulfur dioxide and nitrogen oxides into the atmosphere. It damages forests, water bodies, buildings and biodiversity, making it an important environmental topic.
In the acid rain, the rainwater and snow is contaminated by which of the following pollutants?
1. Sulphur-dioxide 2. Nitrogen oxide
3. Carbon-dioxide 4. Methane
Codes :
Correct Answer:
(B) 1 and 2 only
Sulphur dioxide and nitrogen oxide are the main factors for acid rain. Acid rain contaminates rainwater and snow. This produces an adverse impact on rivers, lakes and ponds.
Ques: 2
Acid rain occurs due to –
Correct Answer:
(C) Reaction between clouds and sulphur dioxide pollutants
Acid rain is caused by the reaction of the cloud's water and sulphur dioxide. Acid rain reduces pH value of soil. It also impacts micro-organism as their growth is dependent on pH value. Acid rain also increases the corrosion rate of metals in particular iron, steel, copper and bronze. These enter in the drinking water and soil and thus affect the nervous system.
Ques: 3
Acid rain is caused by –
Correct Answer:
(A) Industries
Ques: 4
Which one of the following is an air pollutant gas and is released by burning fossil fuel?
Correct Answer:
(D)
Sulphur dioxide
Sulphur dioxide is an air pollutant gas and is released by burning fossil fuel.
Ques: 5
In the context of which of the following do some scientists suggest the use of cirrus cloud thinning technique and the injection of sulphate aerosol into stratosphere?
Correct Answer:
(D)
Reducing the global warming
For reducing the global warming geo-engineering solutions have often been suggested by the scientists. Injection of sulphate aerosols, very fine solid particles, into the stratosphere is one of the most widely discussed ideas. Sulphate aerosol particles are very good reflectors of sunlight, and it has been shown, through various climate models, that even if 1% of current incident solar radiation is reflected back in space, a very significant amount of temperature rise on earth can be off set. Another way of instantly cooling the planet is the use of cirrus cloud thinning technique. These clouds are composed mainly of ice crystals and they have greenhouse property. They let the solar radiation pass through and reach the surface, but trap the higher wavelength infrared radiation emitted from the earth, thereby contributing to the heating. If these clouds are reduced by some engineering interventions, it would allow the IR radiation from the earth, too, to pass through to space, thus allowing some of the heat to dissipate and hence cool the planet.
Ques: 6
Acid rain is due to air pollution by–
Correct Answer:
(D)
Nitrous oxide and Sulphur dioxide
Acid rain is caused by a chemical reaction that begins when a compound like sulphur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere where they mix and react with water, oxygen and other chemical to form more acidic pollutants. When these pollutants fall on the surface with rain, it is termed acid rain. Normally, the pH value of acid rain is less than 5.6. Notably, the pH value of pure water is 7.0.