Air pollution by “Fly Ash” is caused by–

Air pollution by “Fly Ash” is caused by–
by

1 Answer

Answer :

Cement industry
by

Related questions

Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing? (A) Ash disposal problem (B) Excessive fly ash discharge from the stack (C) Higher power consumption in its transportation (D) Erosion of induced draft fan blades

Description : Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing? (A) Ash disposal problem (B) Excessive fly ash discharge from the stack (C) Higher power consumption in its transportation (D) Erosion of induced draft fan blades

Last Answer : (A) Ash disposal problem

Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing? (A) Ash disposal problem (B) Excessive fly-ash discharge from the stack (C) High power consumption in its transportation (D) Erosion of induced draft fan blades

Description : Which of the following is the most important deterrents to an extended use of pulverised coal in boiler firing? (A) Ash disposal problem (B) Excessive fly-ash discharge from the stack (C) High power consumption in its transportation (D) Erosion of induced draft fan blades

Last Answer : (A) Ash disposal problem

Pick out the wrong statement. (A) Percentage of ash in coke produced from medium coking coal is more than that in coal (B) The calorific value (kcal/Nm3 ) of coke oven gas reduces on removal of hydrogen from it by cryogenic method (C) Ash is normally removed as 'fly-ash' in Kopper-Totzek process of coal gasification (D) Coal based fertiliser plants in India at Talcher (Orissa) and Ramagundam (A.P) employ Kopper-Totzek process of coal gasification

Description : Pick out the wrong statement. (A) Percentage of ash in coke produced from medium coking coal is more than that in coal (B) The calorific value (kcal/Nm3 ) of coke oven gas reduces on ... plants in India at Talcher (Orissa) and Ramagundam (A.P) employ Kopper-Totzek process of coal gasification

Last Answer : (C) Ash is normally removed as 'fly-ash' in Kopper-Totzek process of coal gasification

Smog is (A) Nothing but black smoke (B) A combination of smoke and fog (C) A liquid particle resulting from vapor condensation (D) A solid particle e.g. fly-ash

Description : Smog is (A) Nothing but black smoke (B) A combination of smoke and fog (C) A liquid particle resulting from vapor condensation (D) A solid particle e.g. fly-ash

Last Answer : (B) A combination of smoke and fog

Pozzolanic properties exist in (A) Shales (B) Fly ash (C) Pumicite (D) All the above

Description : Pozzolanic properties exist in (A) Shales (B) Fly ash (C) Pumicite (D) All the above

Last Answer : Answer: Option D

Workability improved by adding (A) Fly ash (B) Hydrated lime (C) Calcium chloride (D) All the above

Description : Workability improved by adding (A) Fly ash (B) Hydrated lime (C) Calcium chloride (D) All the above

Last Answer : Answer: Option D

For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is (A) 80 : 13 : 7 (B) 70 : 20 : 10 (C) 60 : 35 : 5 (D) None of these

Description : For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is (A) 80 : 13 : 7 (B) 70 : 20 : 10 (C) 60 : 35 : 5 (D) None of these

Last Answer : Answer: Option A

The main constituent of fly-ash, is (A) Aluminium oxide (B) Silica (C) Ferrous oxide (D) All of these

Description : The main constituent of fly-ash, is (A) Aluminium oxide (B) Silica (C) Ferrous oxide (D) All of these

Last Answer : Answer: Option D

The workability of concrete can be improved by adding (a) Hydrated lime (b) Fly ash (c) Calcium chloride (d) All the above

Description : The workability of concrete can be improved by adding (a) Hydrated lime (b) Fly ash (c) Calcium chloride (d) All the above

Last Answer : (d) All the above

Fly ash when added to concrete [ A ] Acts as aggregates [ B ] Acts as pozzolona [ C ] Improves appearance [ D ] Reduces setting time

Description : Fly ash when added to concrete [ A ] Acts as aggregates [ B ] Acts as pozzolona [ C ] Improves appearance [ D ] Reduces setting time

Last Answer : [ B ] Acts as pozzolona

State any two properties and any two uses of fly ash

Description : State any two properties and any two uses of fly ash

Last Answer : Properties: a) It contains SiO2, Al2O3, Fe2O3, CaO and some toxic elements b) Flyash together with bottom ash is a non-hazardous material c) These particles are spherical in shape d) ... reclamation l) Used in cement production m) Production of roller compacted concrete n) Used in geopolymers

State the uses of fly ash and blast furnace slag.

Description : State the uses of fly ash and blast furnace slag.

Last Answer :  I) Fly ash The various uses of fly ash are: 1) Concrete production, as a partial substitute material for Portland cement. 2) For the construction of embankments and other structural fills. 3) For ... and water proofing. 5) It is used as insulation in mineral wool, in rail road ballast etc.

Write two uses of each : (i) Fly ash (ii) Blast furnace slag

Description : Write two uses of each : (i) Fly ash (ii) Blast furnace slag

Last Answer : I) Fly ash The various uses of fly ash are: 1) Concrete production, as a partial substitute material for Portland cement. 2) For the construction of embankments and other structural fills. 3) For ... and water proofing. 5) It is used as insulation in mineral wool, in rail road ballast etc. 

What are the major constituents of typical fly ash particles generated from the combustion of coal? w) acidic and basic oxides x) trace elements y) unburned carbon z) sulfates and phosphates

Description : What are the major constituents of typical fly ash particles generated from the combustion of coal? w) acidic and basic oxides x) trace elements y) unburned carbon z) sulfates and phosphates

Last Answer : ANSWER: W -- ACIDIC AND BASIC OXIDES 

The radioactive pollution may result from: 1. medical waste 2. coal ash 3. production of nuclear arsenal 4. mining of uranium 5. decommissioning of nuclear weapons The correct causes are: (a) 1, 3 and 4 only (b) 1, 3, 4 and 5 only (c) 2, 3, 4 and 5 only (d) 1, 2, 3, 4 and 5

Description : The radioactive pollution may result from: 1. medical waste 2. coal ash 3. production of nuclear arsenal 4. mining of uranium 5. decommissioning of nuclear weapons The correct causes are: (a) 1, 3 and 4 only (b) 1, 3, 4 and 5 only (c) 2, 3, 4 and 5 only (d) 1, 2, 3, 4 and 5

Last Answer : Ans:(b)

Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. (A) Coal ash (B) Potassium cyanide (C) Ortho-xylene (D) None of these

Description : Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. (A) Coal ash (B) Potassium cyanide (C) Ortho-xylene (D) None of these

Last Answer : (B) Potassium cyanide

Name any two diseases that are caused by air pollution. -Geography

Description : Name any two diseases that are caused by air pollution. -Geography

Last Answer : Asthma and T.B.

What is air pollution Name 2 diseases that caused by air pollution Suggest the ways to prevent air pollution?

Description : What is air pollution Name 2 diseases that caused by air pollution Suggest the ways to prevent air pollution?

Last Answer : respiratory infections, Heart disease, COPD, stroke and lung cancer

Air pollution is not caused by

Description : Air pollution is not caused by

Last Answer : Air pollution is not caused by A. Pollen grains B. Hydroelectric power C. Industries D. Automobiles

Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called (A) Thermosphere (B) Stratosphere (C) Troposphere (D) Mesosphere

Description : Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called (A) Thermosphere (B) Stratosphere (C) Troposphere (D) Mesosphere

Last Answer : (B) Stratosphere

Minimum air pollution is caused by burning of a) coal b)kerosene c)LPG d)Diesel

Description : Minimum air pollution is caused by burning of a) coal b)kerosene c)LPG d)Diesel

Last Answer : c)LPG

Anxiety and stress are caused by a) Air pollution b) Noise pollution c) Water pollution d) Nuclear pollution

Description : Anxiety and stress are caused by a) Air pollution b) Noise pollution c) Water pollution d) Nuclear pollution

Last Answer : b) Noise pollution

Do you think the ash cloud will spread worldwide and disrupt air travel everywhere--not just Europe?

Description : Do you think the ash cloud will spread worldwide and disrupt air travel everywhere--not just Europe?

Last Answer : Unlikely… However, that depends on: how long the eruption lasts, how much material is placed airborne, the grain shape and size of the material, the exhaust velocity of the volcano vent, and the velocity and direction of the winds aloft. So, too many variables to answer your question today.

Which of the following is used for removing air bubbles from glass during its manufacture? (1) Fledspar (2) Arsenic oxide (3) Potassium Carbonate (4) Soda Ash

Description : Which of the following is used for removing air bubbles from glass during its manufacture? (1) Fledspar (2) Arsenic oxide (3) Potassium Carbonate (4) Soda Ash

Last Answer : (2) Arsenic oxide

Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the (A) Physical nature, ash content and fineness of the coal (B) Amount of excess air supplied and load on the boiler (C) Type of burner and combustion chamber (D) All (A), (B) and (C)

Description : Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the (A) Physical nature, ash content and fineness of the coal (B) Amount of excess air supplied and load on the boiler (C) Type of burner and combustion chamber (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

In producer gas making furnace, steam is added along with air to mainly control the (A) Fusion of coal ash & clinker formation (B) C. V. of producer gas (C) Temperature of producer gas (D) Tar content in producer gas

Description : In producer gas making furnace, steam is added along with air to mainly control the (A) Fusion of coal ash & clinker formation (B) C. V. of producer gas (C) Temperature of producer gas (D) Tar content in producer gas

Last Answer : (A) Fusion of coal ash & clinker formation

Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis. (A) 500 (B) 750 (C) 950 (D) 1100

Description : Coal is heated in presence of air to a temperature of about __________ °C, while determining its ash content for proximate analysis. (A) 500 (B) 750 (C) 950 (D) 1100

Last Answer : (B) 750

During combustion of coal on grate, clinker formation is increased by the (A) Use of thick fire bed (B) Low fusion point of ash (< 1100° C) (C) Use of preheated primary air (D) All (A), (B) & (C)

Description : During combustion of coal on grate, clinker formation is increased by the (A) Use of thick fire bed (B) Low fusion point of ash (< 1100° C) (C) Use of preheated primary air (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C. (A) 400-500 (B) 900-1000 (C) 1400-1500 (D) 1700-1800

Description : Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are ... __________ °C. (A) 400-500 (B) 900-1000 (C) 1400-1500 (D) 1700-1800

Last Answer : (B) 900-1000

Which of the following would require least amount of secondary air for combustion? (A) Coke breeze containing 25% ash and 2% volatile matter (B) Anthracite containing 10% volatile matter and 8% ash(C) Bituminous coal containing 20% ash and 25% volatile matter(D) Semi-bituminous coal containing 25% ash and 20% volatile matter

Description : Which of the following would require least amount of secondary air for combustion? (A) Coke breeze containing 25% ash and 2% volatile matter (B) Anthracite containing 10% volatile matter and 8% ash ... ash and 25% volatile matter (D) Semi-bituminous coal containing 25% ash and 20% volatile matter

Last Answer : (A) Coke breeze containing 25% ash and 2% volatile matter

Find false statement about effect of sulphur in fuel? (A) It has heating value (B) It helps in electrostatic precipitation of ash in flue gases (C) It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low (D) It erodes furnace walls

Description : Find false statement about effect of sulphur in fuel? (A) It has heating value (B) It helps in electrostatic precipitation of ash in flue gases (C) It leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low (D) It erodes furnace walls

Last Answer : (D) It erodes furnace walls

Increase in temperature due to excess of carbon dioxide in air which traps heat energy is known as _______ . a) global warming b)soot c)ash d)acid rain

Description : Increase in temperature due to excess of carbon dioxide in air which traps heat energy is known as _______ . a) global warming b)soot c)ash d)acid rain

Last Answer : a) global warming

Bunchy top of papaya caused by MLO is spread by a. Nematode b. Fungi c. White fly d. Leaf hoppers

Description : Bunchy top of papaya caused by MLO is spread by a. Nematode b. Fungi c. White fly d. Leaf hoppers

Last Answer : d. Leaf hoppers

Explain any three types of pollution caused by industries. -SST 10th

Description : Explain any three types of pollution caused by industries. -SST 10th

Last Answer : The three types of pollution caused by industries are air pollution, water pollution and Noise pollution. (i) Air pollution through spewing of smoke from industry pollute the air with sulphur ... water pollution. (iii) Besides, industrial and construction activities generates noise pollution.

Name three types of pollution caused by industries. -SST 10th

Description : Name three types of pollution caused by industries. -SST 10th

Last Answer : The three types of pollution caused by industries are air pollution, water pollution and Noise pollution.

How is soil pollution caused? -SST 10th

Description : How is soil pollution caused? -SST 10th

Last Answer : Soil pollution usually results from the disposal of solid and semi-solid wastes in agricultural practices, industrial processes and insanitary habits. Some Major Causes of soil pollution: ... the fertilizers are contaminated with other synthetic organic chemicals, the soil water gets polluted.

Name two common diseases caused as a result of gaseous pollution. -SST 10th

Description : Name two common diseases caused as a result of gaseous pollution. -SST 10th

Last Answer : Two diseases are lung cancer and asthma.

Black foot disease is caused by pollution of ground water as a consequence of increased seepaga of

Description : Black foot disease is caused by pollution of ground water as a consequence of increased seepaga of

Last Answer : Black foot disease is caused by pollution of ground water as a consequence of increased seepaga of A. Nitrates B. Fluorides C. Arsenic D. Mercury.

Pollution caused by persistent pesticides is relatively more dangerous to which type of organisms?

Description : Pollution caused by persistent pesticides is relatively more dangerous to which type of organisms?

Last Answer : Pollution caused by persistent pesticides is relatively more dangerous to which type of organisms? A. ... C. First level carnivores D. Top carnivores.

Minamata and itai-itai are caused by the pollution of

Description : Minamata and itai-itai are caused by the pollution of

Last Answer : Minamata and itai-itai are caused by the pollution of A. Mercury and lead B. Mercury and Cadmium C. Lead and Tin D. Lead and Strontium.

Phosphate pollution is caused by

Description : Phosphate pollution is caused by

Last Answer : Phosphate pollution is caused by A. Weatheringof phosphate rocks only B. Agricultural fertilizers ... sewage D. sewage and agricultural fertilizers.

Water soaked appearance of leaves due to sulphur dioxide pollution is caused by

Description : Water soaked appearance of leaves due to sulphur dioxide pollution is caused by

Last Answer : Water soaked appearance of leaves due to sulphur dioxide pollution is caused by A. Destruction of ... A and B D. Corrosive action over metals.

Pollution is not caused by

Description : Pollution is not caused by

Last Answer : Pollution is not caused by A. Thermal power plant B. Automobile C. Radioactive power plant D. Hydroelectric power plant

Minamata disease caused due to water pollution is due to

Description : Minamata disease caused due to water pollution is due to

Last Answer : Minamata disease caused due to water pollution is due to A. Lead poisoning B. Arsenic chloride poisoning C. Mercury poisoning D. Ammonia pollution

Thermal pollution is caused by

Description : Thermal pollution is caused by

Last Answer : Thermal pollution is caused by A. Power plants B. Industries C. Automobiles D. All of the above

Which one of the following weeds is effective in controlling water pollution caused by industrial effluents? (1) Parthenium (2) Elephant grass (3) Water hycinth (4) Molar grass

Description : Which one of the following weeds is effective in controlling water pollution caused by industrial effluents? (1) Parthenium (2) Elephant grass (3) Water hycinth (4) Molar grass

Last Answer : (3) Water hycinth Explanation: Water hyacinth (Eichhornia crassipes) is used for purifying not only domestic wastewater but also industrial wastewater. It can readily absorb, accumulate and ... hyacinth can remove even radioactive metals from industrial effluents, which is very difficult otherwise.

Minamata disease is caused by pollution of water by - (1) lead (2) tin (3) methy isocyanate (4) mercury

Description : Minamata disease is caused by pollution of water by - (1) lead (2) tin (3) methy isocyanate (4) mercury

Last Answer : (4) mercury Explanation: Minamata disease is a neurological syndrome caused by severe mercury poisoning. The disease was first discovered in Minamata City in Kumamoto prefecture, Japan in 1956. It ... pollution) from the Chisso Corpora-tion's chemical factory, which continued from 1932 to 1968.

Which of the following weeds has been found effective in checking water pollution caused by industrial affluents? (1) Water hyacinth (2) Elephant Grass (3) Parthenium (4) Both (2) and (3)

Description : Which of the following weeds has been found effective in checking water pollution caused by industrial affluents? (1) Water hyacinth (2) Elephant Grass (3) Parthenium (4) Both (2) and (3)

Last Answer : (1) Water hyacinth Explanation: Plants that are resistant to crude oil toxicity such as black poplar and willows, as well as miscanthus grass (elephant grass) have been found to ... oliefera seeds and Parthenium hysterophorus plants are effective for the removal of industrial p011utants in water.

Transboundary pollution (or) Acid rain is caused by – (1) Carbon monoxide (2) Carbon dioxide (3) Hydrocarbon (4) Nitrogen oxide and sulphur dioxide

Description : Transboundary pollution (or) Acid rain is caused by – (1) Carbon monoxide (2) Carbon dioxide (3) Hydrocarbon (4) Nitrogen oxide and sulphur dioxide

Last Answer : (4) Nitrogen oxide and sulphur dioxide Explanation: Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions ( ... dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.

Which of the following weeds has been found useful to check water pollution caused by industrial effluents? (1) Partheniurn (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2)

Description : Which of the following weeds has been found useful to check water pollution caused by industrial effluents? (1) Partheniurn (2) Elephant grass (3) Water hyacinth (4) Both (1) and (2)

Last Answer : (4) Both (1) and (2) Explanation: Parthenium and Elephant grass are useful to check water pollution caused by industrial effluents.