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
The thickness of the ozone in a column of air from the ground to the top of the atmosphere is measured in terms of :
1. Dalton units
2. Svedberg units
3. Monomeric units
4. Dobson units
Which biological process leads to a decrease in the fish-eating bird population near a water body containing toxicants from industrial drainage?
1. Algal bloom
2. Biochemical oxygen demand
3. Accelerated Eutrophication
4. Biomagnification
1. | Kilobase | 2. | Dobson unit |
3. | Decibels | 4. | Decameter |
1. | The amount of some toxic substances of industrial wastewater increases in the organisms at successive trophic levels. |
2. | The micro-organisms involved in biodegradation of organic matter in a sewage-polluted water body consume aquatic organisms. |
3. | Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries. |
4. | Water hyacinth grows abundantly in eutrophic water bodies and lead to an imbalance in the ecosystem dynamics of the water body. |
Given below are two statements:
I: | Electrostatic precipitator is most widely used in a thermal power plant. |
II: | Electrostatic precipitator in a thermal power plant removes ionising radiations. |
1. | Statement I is incorrect but Statement II is correct. |
2. | Both Statement I and Statement II are correct. |
3. | Both Statement I and Statement II are incorrect. |
4. | Statement I is correct but Statement II is incorrect. |