According to the Central Pollution Control Board [CPCB] what size (in diameter) of particulate is responsible for causing greater harm to human health?
1. 3.5 micrometers
2. 2.5 micrometers
3. 4.0 micrometers
4. 3.0 micrometers
Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants:
1. Vehicular exhaust
2. Allergy causing pollen
3. Noise
4. Particulates of size 2.5 micrometer or below
A species that was introduced for ornamentation but has become a troublesome weed in India:
1. Parthenium hysterophorus
2. Eichhornia crassipes
3. Prosopis juliflora
4. Trapa Spinosa
Dobson units are used to measure thickness of:
1. Ozone
2. Troposphere
3. CFCs
4. Stratosphere
Montreal Protocol was signed in 1987 for the control of:
1. | Emission of ozone-depleting substances |
2. | Release of Green House gases |
3. | Disposal of e-waste |
4. | Transport of genetically modified organisms from one country to another |
Snow-blindness in Antarctic regions is due to:
1. | Inflammation of cornea due to high doses of UV-B radiation |
2. | High reflection of light from snow |
3. | Damage to the retina caused by infra-red rays |
4. | Freezing of fluids in the eye because of the low temperature |
The device which can remove particulate matter present in the exhaust from a thermal power plant is :
1. Catalytic Convertor
2. STP
3. Incinerator
4. Electrostatic Precipitator
The entire fleet of buses in Delhi was converted to CNG from diesel. In reference to this, which one of the following statements is false?
1. | It cannot be adulterated like diesel. |
2. | CNG burns more efficiently than diesel. |
3. | The same diesel engine is used in CNG buses making the cost of conversion low. |
4. | It is cheaper than diesel. |
Statement I: | In a scrubber the exhaust from the thermal plant is passed through the electric wires to charge the dust particles. |
Statement II: | Particulate matter (PM 2.5) cannot be removed by scrubber but can be removed by an electrostatic precipitator. |
High dose of UV-B causes inflammation of cornea and is called as:
1. UV -blindness
2. Colour-blindness
3. Evening- blindness
4. Snow- blindness