No.1 PSC Learning App
Consider the following statements:
Methane is both a natural and anthropogenic pollutant.
It is primarily responsible for photochemical smog formation.
It is the most abundant hydrocarbon in the atmosphere.
Which of the statements is/are correct?
Which of the following statements about sulphur oxides are correct?
They are released by oil refineries and smelters.
They support the growth of lichens and mosses.
They lead to acid rain.
Which of the following pollutants are matched correctly with their effects?
Sulphur oxides – Destruction of chlorophyll
Nitrogen oxides – Formation of ozone in photochemical smog
Methane – Causes lung cancer
Carbon monoxide – Respiratory blockage due to haemoglobin binding
Which of the following statements about air pollution effects is/are correct?
Carbon monoxide binds with haemoglobin, preventing oxygen transport.
Ethylene accelerates fruit ripening and causes premature leaf fall.
Nitrogen oxides cause acid rain and respiratory issues.
Which of the following statements are correct regarding unburnt hydrocarbons?
They include benzene and 3,4 benzopyrene.
They are mainly emitted by burning fossil fuels.
They are associated with lung cancer in humans.
Which of the following statements regarding types of pollution are correct?
Natural pollution arises solely from human activities like industrial waste dumping.
Anthropogenic pollution is caused by human actions such as overuse of fertilizers.
Positive pollution involves the addition of harmful substances, reducing fertility.
Negative pollution involves the removal of essential substances, reducing productivity.
Consider the following about pollution control strategies:
Substituting pollutants with safer alternatives is a viable strategy.
Pollution can be minimized but not completely eliminated.
Recycling non-biodegradable materials is an effective control method.
Consider the following regarding natural pollution:
It is always harmless.
Methane from marshes is a type of natural pollution.
Natural pollution cannot be regulated.
Consider the following regarding qualitative and quantitative pollutants:
Qualitative pollutants include substances introduced exclusively by humans.
Quantitative pollutants are harmful only when their concentration increases.
Mercury is a qualitative pollutant.
Consider the following statements about synergism:
It refers to the combined effect of primary pollutants creating more toxic substances.
It always leads to less harmful by-products.
PAN and smog are examples of products formed via synergism.
Consider the following statements about biodegradable pollutants:
Biodegradable pollutants are always harmless in any quantity.
They can cause pollution if present in excess amounts.
Microorganisms play a key role in degrading biodegradable pollutant
Which statements correctly distinguish between positive and negative pollution?
Positive pollution refers to addition of harmful substances in the environment.
Negative pollution involves removal of necessary components like topsoil.
Both types contribute equally to pollution intensity.
Which of the following statements describe anthropogenic pollution?
It is caused by natural events like volcanic eruptions.
It results from human activities.
Examples include emissions from industries and vehicles.
Which of the following statements about primary pollutants are true?
They are emitted directly into the atmosphere.
Carbon monoxide and DDT are primary pollutants.
They are more toxic than secondary pollutants.
Which of the following statements are correct regarding pollution control?
One way to control pollution is by legally banning harmful substances.
Alternatives to pollutants can help in pollution mitigation.
There is no way to control pollution once it has started.
Which of the following statements are correct?
Non-biodegradable pollutants can be naturally recycled over time.
Aluminium and DDT are examples of non-biodegradable pollutants.
Biodegradable pollutants always enhance environmental quality.
Consider the following statements.
Producers generate energy-rich food using sunlight.
Consumers include decomposers only.
All organisms in the biosphere are either producers or consumers.
Consider the following statements.
Pollution refers to any desirable change in the environment.
Pollution can affect human health directly or indirectly.
Industrial activity is a major contributor to environmental pollution.
Consider the following statements.
An ecosystem includes energy flow through different trophic levels.
Each successive trophic level receives 20% of the energy from the previous level.
Consumers are classified into primary, secondary, and tertiary based on feeding habits.