Advertisements
Advertisements
प्रश्न
The consequences of global warming may be:
(i) increase in average temperature of the earth.
(ii) melting of Himalayan Glaciers.
(iii) increased biochemical oxygen demand.
(iv) eutrophication.
उत्तर
(i) increase in average temperature of the earth.
(ii) melting of Himalayan Glaciers.
Explanation:
The rate at which solar radiation is reaching the earth is constant but the amount of CO2 in the air is increasing. Consequently, the heat radiated back to the earth will increase and the temperature of the earth surface will also increase. This increase in temperature will disturb the thermal balance on the earth and could cause glacier and ice caps to melt.
APPEARS IN
संबंधित प्रश्न
Identify the wrong statement in the following.
Match the List I with List II and select the correct answer using the code given below the lists.
| List I | List II | ||
| A | Stone leprosy | 1 | CO |
| B | Biological magnification | 2 | Green house gases |
| C | Global warming | 3 | Acid rain |
| D | Combination with haemoglobin | 4 | DDT |
Which one of the following river is highly polluted?
Which is the natural source of air pollution?
Which town along the banks of Yamuna is polluted?
Which of the following is a natural source of air pollution?
Which of these sources are responsible for water pollution?
- Households
- Industries
- Farms and fields
- Tourism
Which of the following is/are the causes of pollution in Yamuna?
- Industrial pollution from Kanpur.
- Domestic waste from Delhi.
- Extraction of water by Haryana and Uttar Pradesh for irrigation.
Respiratory diseases are mainly caused by ______ pollution.
Read the given source and answer the questions that follow:
|
The main sources of noise pollution are various factories, mechanized construction and demolition Works, automobiles and aircraft, etc. There may be added periodical but polluting noise from sirens, loudspeakers used in various festivals, programmes associated with community activities. The level of steady noise is measured by sound level expressed in terms of decibels (dB). Of all these sources, the biggest nuisance is the noise produced by traffic, because its intensity and nature depend upon factors, such as the type of aircraft, vehicle, train and the condition of road, as well as, that of vehicle (in case of automobiles). In sea traffic, the noise pollution is confined to the harbour due to loading and unloading activities being carried. Industries cause noise pollution but with varying intensity depending upon the type of industry. Noise pollution is location specific and its intensity declines with increase in distance from the source' of pollution, i.e. industrial areas, arteries of transportation, airport, etc. Noise Pollution is hazardous in many metropolitan and big cities in India. |
- Explain the meaning of noise pollution.
- Why is noise pollution hazardous in metropolitan cities in India?
- "Noise pollution is location specific." Explain with argument.
