Tag: environmental pollution and industries

Quizzes (15) Questions (97)

Questions Related to environmental pollution and industries

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Lead concentration in blood is considered alarming, if it is

  1. $4-6\mu g/100ml$
  2. $10\mu g/100ml$
  3. $20\mu g/100ml$
  4. $30\mu g/100ml$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lead is the major heavy metal pollutant released by the vehicular exhausts. It persists in the air and precipitates with the rains. In reaches the human body when consumed through water or inhaled as suspended particle. At the concentration of 30μg/100ml in blood, it is considered poisoning as it can cause aplastic anaemia, tumour and cancer.

Hence, the correct answer is '30μg/100ml'.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

In foggy and hazy environment, birds are able to locate position of sun and their path by means of

  1. Infra-red wavelength

  2. Ultra-violet radiations

  3. Magnetic system

  4. Pheromones
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In foggy and hazy environment, the visible spectrum of the sun is not able to penetrate and so, humans find it difficult to visualize. However, the UV-A can penetrate through the fog, which cannot be detected by human eyes as t falls behind the visible spectrum of VIBGYOR. Birds are capable of recognizing more colors than the humans, they can detect the UV rays as well that allows them to navigate in the foggy and hazy conditions as well. These also allow the birds to track their migratory routes.

Hence, the correct answer is 'Ultra-violet radiations'.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

"Grey Air" refers to

  1. Incomplete smog formation
  2. $N _2O$

  3. CO
  4. $SO _2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Photochemical smog is composed mainly of ozone (O$ _3$), Peroxyacetyl nitrate (PAN) and NOx. It is often called brown air where solar radiation is intense. In areas or seasons of lesser solar radiation smog formation is incomplete and the air is referred to as grey air.

So the correct answer is 'Incomplete smog formation'.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Anthracosis is caused by

  1. Iron dust

  2. Coal dust

  3. Cane fibre

  4. Silica
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Anthracosis is the clinical disorders of the respiratory tract that is caused due to deposition of the coal dust due to inhalation of polluted air. It is a form of pneumoconiosis. Due to this, the lungs are rendered black in colour. It is also called the Miner's disease as the coal mine workers are worst affected by it. It affects the bronchi and alveoli surface area. This illness can be seen in smokers as well. Pulmonary emphysema and chronic bronchitis are the severe effects of anthracosis. 

Hence, the correct answer is 'Coal dust'.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Aerosols, decrease primary productivity by.

  1. Decreasing $O _2$ concentration
  2. Preventing $N _2$ fixation

  3. Reducing photosynthesis

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Aerosols are minute particles suspended in the atmosphere and are known to reduce primary productivity on earth. scattering and absorption of sunlight by anthropogenic aerosols reduce photosynthetically active radiation, (PAR) incident upon the Earth’s surface, but increase the fraction of the PAR that is diffuse.

So the correct answer is 'Reducing photosynthesis'.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Which pollutant causes(a) Damage to neuron (b) Dryness in throat (c) Headache and blurred vision?

  1. Hydrocarbons

  2. Hydrogen sulphide

  3. Hydrogen fluoride

  4. Hydrogen cyanide
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Hydrogen cyanide stops the transport of oxygen around the body and may also cause sudden loss of consciousness, weakness, headache, confusion, nausea, vomiting, irritation and eye infections. People with sensitive kidneys, respiratory tract (air passages and lungs), skin or thyroid are more prone to hydrogen cyanide poisoning. Part of the reason why hydrogen cyanide is considered potentially more dangerous is that some individuals are unable to detect it by smell which creates damage to neurons.

So the correct answer is 'Hydrogen cyanide'.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Fog is formed by

  1. Smoke

  2. Condensation of water vapours

  3. Condensation of water vapours over dust particles

  4. Both A and C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When there is temperature difference between the land and the atmosphere, and the land is also having low temperature, then the condensation of the water droplets/water vapours can begin near the surface. The condensation process occurs around the dust particles present in the air, so the dust particles provide nucleation for fog formation. Smoke and dust forms the haze. Smoke, dust and water droplets form the mist. Hence, the correct answer is ‘Condensation of water vapours over dust particles’.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Which of the following does not cause soil pollution

  1. Acid rain

  2. Agriculture activities

  3. Monsoon rain

  4. Industrial activities
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The following are the main mechanisms that generate soil pollution:
A. Antropogenic – through human activity including:
1. Accidental spills and leaks during storage, transport or use of chemicals (e.g., leaks and spills of gasoline and diesel at gas stations);
2. Foundry activities and manufacturing processes that involve furnaces or other processes resulting in possible dispersion of contaminants in environment;
3. Mining activities involving crushing and processing of raw materials (such as mining activity);
4. Construction activities
5. Agricultural activities involving the spread of herbicides/pesticides/insecticides and fertilizers;
6. Transportation activities (e.g., vehicle emissions)
7. Dumping of chemicals (accidental or intended – such as illegal dumping);
Storage of wastes in landfills (which may leak to groundwater or generate polluted vapours)
8. Cracked paint chips falling from building walls, especially lead-based paint;
B. Natural causes:
1. Natural accumulation of compounds in soil due to imbalances between atmospheric deposition and leaching away with precipitation water (e.g., concentration and accumulation of perchlorate in soils in arid environments).
2. Natural production in soil under certain environmental conditions (e.g., natural formation of perchlorate in soil in the presence of a chlorine source, metallic object and using the energy generated by a thunderstorm).
3. Leaks from sewer lines into subsurface (e.g., adding chlorine which could generate trihalometanes such as chloroform).
Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Which of the following waste cannot be considered as a soil pollutant?

  1. Biodegradable

  2. Non-biodegradable

  3. Industrial

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Substances that are not broken down by microorganisms are non-biodegradable. Non-biodegradable substances affect the soil. Biodegradable substances are broken down by organisms and are not harmful to environment. Hence, non-biodegradable and industrial wastes are considered as soil pollutants. They may enter the food chain and harm the organisms in the higher trophic levels. 

Thus, the correct answer is option A.