Interview Questions.

Question 1. What Is Pollution Control?

Answer :

Pollution manipulate is a time period utilized in environmental management. It way the manipulate of emissions and effluents into air, water or soil.

Question 2. What Are The Major Causes Of Pollution?

Answer :

The burning of coal greatly contributes to air pollution due to the fact the smoke coming from factories, chimneys, timber burning and motors releases sulphur dioxide into the air. A main purpose of water pollution is disposal of industrial waste within the ocean.

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Question three. How To Control Noise Pollution?

Answer :

There are many methods which assist to manipulate the noise pollutants. The source of noise should be decreased. The route of transmission of sound need to be stopped and the receiver of noise have to be secure guarded. The amount of traffic must be reduced close to the residential homes, academic institutes and hospitals.

The machinery should be redesigned and the cars have to be nicely maintained. The acoustical furnishing should be executed so that the sound may be absorbed. The voice need to no longer be passed without delay to the receiver and ought to be diverted upwards in place of downwards as in case of ear splitting jet exhaust noise.

The industries ought to be built far from the residential regions and the prison laws need to be mounted and observed to shield the people from noise pollutants. A standard attention programme to train the people must be performed. It is essentially a public nuisance which influences the people in almost all aspects.

Question 4. What Are The Effects Of Noise Pollution?

Answer :

There are many aspect results of the noise pollutants. It influences the general fitness and hearing energy of the people. The excessive intensity of noise and its persevered use can motive harm to the ears. It might also cause the permanent lack of hearing. A large explosion can cause the injury to tympanic membrane.

It might also cause tension and pressure which may cause the fright. It reasons the disturbance in anxious structures of city babies and result in the emotional disturbances along with the peculiar behavior. It may increase the coronary heart charge, decreased output, constriction of vessels and impaired vision. In case of animals it could have an effect on the heart, liver and brain. It might also affect the mind through dilating the blood vessels. It may also have an effect on the eyes by way of dilating the student and purpose the digestive spasms. It can also result in the growth in cholesterol level in blood.

Question 5. What Is Noise Pollution?

Answer :

The noise pollution is described as the undesirable sound which is launched into the environment. It disturbs the individual and purpose an damaging impact on the mental and mental nicely being. It is measured in the gadgets of decibels and is denoted by way of the dB. The noise that's extra than one hundred fifteen dB is tolerant.

The industrial restriction of sound inside the industries need to be 75 dB in line with the world fitness enterprise. A type writer can produce a legitimate at 60 dB. There are distinctive sources of the noise pollution and consist of the agriculture machines, industries which produce a legitimate and the usage of pleasing device, crackers, the blasting of dynamite, bull slumbering, stone crushing, defense equipments and textile mills.

Environmental Science Interview Questions
Question 6. How To Control Radioactive Pollution?

Answer :

The radioactive pollutants may be controlled through variety of ways. It consists of the stoppage of leakage from the radioactive substances consisting of the nuclear reactors, industries and laboratories. The disposal of radioactive material need to be secure and cozy. They need to be saved in the safe locations and ought to be changed into harmless shape.

The wastes with a very low radiation should be placed into the sewage. The nuclear strength vegetation ought to follow all of the safe commands. The protective clothes have to be worn via the people who work in the nuclear plants. The natural radiation ought to be at the permissible limits and they must no longer move it.

Question 7. What Is Salinization Of Soil?

Answer :

The growth in awareness of salts in soil that are soluble cause the technique of salination. It relies upon on many elements. The terrible drainage of soil ends in the accumulation of salts at the surface of soil. It can also take place all through the flood. The nice of irrigation water also performs a critical role. In arid regions the ground water is saline. The irrigation water is wealthy in soluble salts. The salts can move from the lower to upper layers by using the capillary action.

It occurs inside the summer time. The increase usage of fertilizers might also add as much as the salt content material of soil. The salt is transported from one location to the alternative with the help of wind. It happens specially in the arid vicinity. The parent nature of rock cloth makes a decision whether the soil is alkaline or acidic. Our u . S . Has 6 million hectares of saline land and in Punjab alone round 6 to 8 thousand hectares of land becomes unfit for agriculture every year.

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Question 8. How To Control Soil Pollution?

Answer :

There are many factors which manipulate the soil pollution. It includes the constrained use of fertilizers and pesticides. The organic control technique ought to be recognized and carried out. The grazing ought to be managed and woodland management must be carried out nicely. The afforestation and reforestation need to be done. In regions of wind erosion wind breaks and shields need to be used. The soil binding grass ought to be planted and the large timber have to be positioned along the banks. The industrial wastes have to be dumped inside the low lying regions. There is a precise technique of cropping which does now not allow the weeds to decide the fields. The mining methods must be stepped forward in conjunction with their transportation. The place need to now not be left barren and dry.

Question 9. How To Control Water Pollution?

Answer :

Water pollutants may be managed within the a couple of ways. It is exceptional controlled via the dilution of water. The pollution need to be handled chemically and have to be transformed into the non toxic materials. The low stage of radioactive wastes inside the water is removed through the oxidation of ponds. There are sure chemicals which act at the organic insecticide and are used inside the pesticide. There are specific techniques which can be very helpful inside the system of thermal pollutants and involve the cooling, evaporation, water cooling; cooling can be moist or dry. Their primary purpose is to maintain the water cool in rivers and streams. The shallow ponds ought to be used to save the home and business wastes. One ought to keep away from the huge ponds. The waste has a presence of sunlight and organic nutrients which may result in the larger increase of bacteria which act at the waste remember.

The reclaimed polluted water can be used in making fertilizers as it's far rich in phosphorous, potassium and nitrogen. It can also be used for the irrigation and factories functions. The proper sewage treatment plans play a vital role in the reclaimed polluted water. There ought to be a law which ensures that the industries must deal with the waste before the water is discharged into the rivers and seas. The polluted water may be treated through the usage of a plant referred to as water hyacinth which is likewise referred as kaloli. It deals with the organic and chemical waste. The heavy metals are also eliminated by using it.

Environmental Health and Safety (EHS) Interview Questions
Question 10. What Are The Degrees Of Water Impurity?

Answer :

There are extraordinary levels of the water impurity. It may be due to the distinct organisms which differ within the tolerance degree of temperature, ph, oxygen, calcium and phosphorous content. It also includes the organic depend, poisons and some pollutants. There are positive fishes referred to as daphnia which might be touchy to poison and metals. The observe of aquatic life gives records concerning the water pollutants. The bio chemical oxygen call for also enables within the measurement of natural wastes inside the polluted water. It is denoted by using BOD. It is defined as the requirement of oxygen by small organisms so that the organic matter which is straightforward to be decomposed may be stabilized beneath the oxygen wealthy surroundings.

The oxygen is measured in the milligrams for few days. It is measured in I liter of water at a temperature around twenty degree Celsius. More is the natural waste extra is the BOD fee. The water which isn't always wealthy inside the organic matter has a cost of BOD identical to 1500 milligram in step with liter. The water which is wealthy in the organic depend has a fee of BOD more than 1500 milligram according to liter. It is predicated best at the natural matter measurements and different elements are not taken into account. So, it isn't a dependable approach for the water pollution. Another approach is there that can substitute this method and is known as the COD which refers to chemical oxygen call for. It takes into account all the oxygen eating pollution which might be present in the water.

Question 11. How Can We Control Air Pollution In The Environment?

Answer :

There are many elements which modify the air pollutants. It states that there should usually be a distance between the industrial and home vicinity. The chimneys ought to be tall in size in order that the emissions ought to be launched better up within the environment. The filters and precipitators need to be used within the chimneys. The scrubber or spray collector must be used to dispose of the poisonous gases. The ash manufacturing need to be decreased by way of the high temperature incinerators.

The sulphur should be eliminated after the combustion. The non combustive assets of power are the nuclear energy, geothermal strength, sun, tidal and wind power. The fuel have to have anti knocking agents. The railway song need to be electrified. The mining place should be rich in timber. The fuel gasoline should be used instead of the coal gasoline. The emission manage system must be gift in the automobiles. The wastes must be removed and recycled within the commercial plants and refineries. The motors must be pollutants free by way of making the fuel alcohol based and the usage of the battery strength.

There are certain plants that have the ability to fix the carbon monoxide. These must be grown in the larger numbers. It includes the ficus and coleus. There are positive vegetation which have the ability to metabolize the nitrogen oxides and other pollutants. It includes the pinus and ribes.

Biomedical waste Interview Questions
Question 12. What Is A Pollutant?

Answer :

A pollutant is a waste cloth that pollutes air, water or soil. Three factors determine the severity of a pollutant: its chemical nature, the concentration and the endurance.

Disaster Management Interview Questions
Question 13. What Are Sources Of Water Pollution And Waste Water Generation Scenario?

Answer :

It is estimated that seventy five% to eighty% of water pollutants through extent is resulting from domestic sewage. The most important industries causing water pollution include: distilleries, sugar, textile, electroplating, pesticides, prescribed drugs, pulp & paper generators, tanneries, dyes and dye intermediates, petro-chemical compounds, metal vegetation and so on. Non-point assets such as fertilizer and pesticide run-offs in rural areas additionally cause pollutants. Only 60% of chemical fertilizers are applied in soils and the stability is leached into soil polluting the floor water. Excess phosphate run-off ends in eutrophication in lakes and water our bodies.

Question 14. What Are The Details Of The Programme On Pollution Control In The Problem Areas?

Answer :

A programme for pollution control via concerted efforts in polluted areas turned into started in 1989. The programme includes identification of the polluted areas, extensive surveys of those regions for identity of polluting resources, preparation of motion plans for control of those polluting sources, and implementation of the motion points by means of the worried responsible corporations/industries.

Question 15. What Are The Incentives To The Industries For Pollution Control?

Answer :

The steps taken by means of the various categories of the industries for reduction in the generation of the pollutants are as follows:

Commissioning of the stand-by power deliver systems by way of chlor-alkali flora lessen mercury emission because of energy screw ups.
Introduction of mixing machine for coal homogenisation in cement plants to make sure strong operation of the ESPs.
Conversion of unmarried hood to the double hood machine in copper smelters to lessen the fugitive emissions.
Biomethanation of the effluents in distillerie.
Solar evaporation ponds in small-scale water polluting gadgets no longer having CETPs within the proximity.
Conversion of the open fire furnaces (OHF) to the primary oxygen furnaces (BOF) and introduction of the dry gadget (rather than wet) for the quenching of the new coke in iron & metal plant life.
Commissioning of chemical restoration flowers (CRPs) by using pulp & paper industries; and Change over the DCDA production approach by using sulphuric acid.
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Question sixteen. What Is The Meaning Of Industrial Pollution?

Answer :

Industrial pollutants is the contamination of the environment through groups, specifically flora and factories, that unload waste products into the air and water. Industrial waste is one in every of the most important participants to the worldwide pollutants problem endangering human beings and the surroundings.