ക്വാണ്ടം ശാസ്ത്രത്തിന്റേയും സാങ്കേതികവിദ്യയുടേയും യുഎന്‍ രാജ്യാന്തര വര്‍ഷം?

Perihelion is on

ആരെയാണ് 'മിസൈൽ വുമൺ ഓഫ് ഇന്ത്യ' എന്ന് വിളിക്കുന്നത്?

ഭൂമിയുടെ Low-Earth ഭ്രമണ പഥത്തിൽ, രണ്ട് ബഹിരാകാശ വാഹനങ്ങൾക്കിടയിൽ ഡോക്കിംഗും (docking) അൺഡോക്കിംഗും (undocking) പരീക്ഷിക്കുന്നതിനായി വിക്ഷേപിച്ച ISRO ദൗത്യത്തിന്റെ പേര്?

Which of the following statements best defines the nature and scope of Science and Technology?

1. Science is solely about theoretical research while technology is limited to manufacturing processes
2. Science involves systematic inquiry to understand natural phenomena, while technology applies this knowledge for practical benefits
3. Science and technology are unrelated fields that do not impact everyday life
4. Technology is the art of invention with no reliance on scientific principles

Consider the following statements:

1. Methane is both a natural and anthropogenic pollutant.

2. It is primarily responsible for photochemical smog formation.

3. 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?

1. They are released by oil refineries and smelters.

2. They support the growth of lichens and mosses.

3. They lead to acid rain.

Which of the following pollutants are matched correctly with their effects?

1. Sulphur oxides – Destruction of chlorophyll

2. Nitrogen oxides – Formation of ozone in photochemical smog

3. Methane – Causes lung cancer

4. Carbon monoxide – Respiratory blockage due to haemoglobin binding

Which of the following statements about air pollution effects is/are correct?

1. Carbon monoxide binds with haemoglobin, preventing oxygen transport.

2. Ethylene accelerates fruit ripening and causes premature leaf fall.

3. Nitrogen oxides cause acid rain and respiratory issues.

Which of the following statements are correct regarding unburnt hydrocarbons?

1. They include benzene and 3,4 benzopyrene.

2. They are mainly emitted by burning fossil fuels.

3. They are associated with lung cancer in humans.

Which of the following statements regarding types of pollution are correct?

1. Natural pollution arises solely from human activities like industrial waste dumping.

2. Anthropogenic pollution is caused by human actions such as overuse of fertilizers.

3. Positive pollution involves the addition of harmful substances, reducing fertility.

4. Negative pollution involves the removal of essential substances, reducing productivity.

Which natural pollutant is associated with forest fires and also occurs in marshy areas?

Which of the following pollutants is naturally released from marshes and paddy fields and is also the most abundant hydrocarbon in the atmosphere?

Which of the following gases is primarily responsible for acid rain and photochemical smog?

Which pollutant is responsible for the destruction of chlorophyll and adversely affects monuments like the Taj Mahal?

Which of the following is the primary source of Carbon Monoxide (CO) in urban air pollution?

Consider the following about pollution control strategies:

1. Substituting pollutants with safer alternatives is a viable strategy.

2. Pollution can be minimized but not completely eliminated.

3. Recycling non-biodegradable materials is an effective control method.

Consider the following regarding natural pollution:

1. It is always harmless.

2. Methane from marshes is a type of natural pollution.

3. Natural pollution cannot be regulated.

Consider the following regarding qualitative and quantitative pollutants:

1. Qualitative pollutants include substances introduced exclusively by humans.

2. Quantitative pollutants are harmful only when their concentration increases.

3. Mercury is a qualitative pollutant.

Consider the following statements about synergism:

1. It refers to the combined effect of primary pollutants creating more toxic substances.

2. It always leads to less harmful by-products.

3. PAN and smog are examples of products formed via synergism.

Consider the following statements about biodegradable pollutants:

1. Biodegradable pollutants are always harmless in any quantity.

2. They can cause pollution if present in excess amounts.

3. Microorganisms play a key role in degrading biodegradable pollutant

Which statements correctly distinguish between positive and negative pollution?

1. Positive pollution refers to addition of harmful substances in the environment.
2. Negative pollution involves removal of necessary components like topsoil.
3. Both types contribute equally to pollution intensity.

Which of the following statements describe anthropogenic pollution?

1. It is caused by natural events like volcanic eruptions.

2. It results from human activities.

3. Examples include emissions from industries and vehicles.

Which of the following statements about primary pollutants are true?

1. They are emitted directly into the atmosphere.

2. Carbon monoxide and DDT are primary pollutants.

3. They are more toxic than secondary pollutants.

Which of the following statements are correct regarding pollution control?

1. One way to control pollution is by legally banning harmful substances.

2. Alternatives to pollutants can help in pollution mitigation.

3. There is no way to control pollution once it has started.

Which of the following statements are correct?

1. Non-biodegradable pollutants can be naturally recycled over time.

2. Aluminium and DDT are examples of non-biodegradable pollutants.

3. Biodegradable pollutants always enhance environmental quality.

Which category best describes substances that occur naturally but cause pollution when concentration increases?

Which of the following is a qualitative pollutant?

Which type of pollution is caused by overgrazing leading to soil nutrient loss?

Which of the following is an example of a secondary pollutant?

Which of the following is an example of a non-biodegradable pollutant?

Consider the following statements.

1. Producers generate energy-rich food using sunlight.

2. Consumers include decomposers only.

3. All organisms in the biosphere are either producers or consumers.

Consider the following statements.

1. Pollution refers to any desirable change in the environment.

2. Pollution can affect human health directly or indirectly.

3. Industrial activity is a major contributor to environmental pollution.

Consider the following statements.

1. An ecosystem includes energy flow through different trophic levels.

2. Each successive trophic level receives 20% of the energy from the previous level.

3. Consumers are classified into primary, secondary, and tertiary based on feeding habits.

Consider the following statements.

1. Rachel Carson’s work led to the banning of DDT in the USA.

2. Carson’s books focused only on marine life.

3. Her writing spurred global awareness about chemical pesticides.

Consider the following statements.

1. The term “ecosystem” was introduced by Eugene Odum in 1953.

2. Ecosystem includes both abiotic and biotic components.

3. An ecosystem does not involve energy flow or nutrient cycling.

Which of the following statements are correct?

1. Ecosystem represents both structure and function of nature.

2. It includes only living organisms interacting with one another.

3. It is the smallest unit of environment that includes both biotic and abiotic factors

Which of the following statements are correct?

1. The primary consumer is always a herbivore.

2. Tertiary consumers are always decomposers.

3. Producers convert inorganic substances into organic matter using sunlight.

Which of the following statements are correct?

1. The biosphere includes both living and non-living components.

2. The biosphere is part of the Earth where life exists.

3. The biosphere comprises all ecosystems.

Which of the following statements are correct?

1. Silent Spring was published in 1951.

2. Rachel Carson's work focused primarily on atmospheric pollution.

3. The Sea Around Us and Under the Sea Wind are also written by Carson.

Which of the following statements are correct?

1. Alexander Von Humboldt was the first to present the relationship between organisms and environment.

2. Eugene Odum is credited with the term "ecosystem."

3. Rachel Carson’s Silent Spring led to the formation of the U.S. Environmental Protection Agency.

Who is regarded as the Father of Indian Ecology?

What percentage of energy is transferred from one trophic level to the next in a food chain?

Who is known as the ‘Mother of the Modern Environmental Movement’?

Who first introduced the term "Ecosystem"?

Who is recognized as the 'Father of Modern Ecology'?

Consider the following statements:

1. Plastic pollution is one of the key environmental challenges addressed by multiple WED themes.

2. The themes of WED are influenced by the host country’s priority issues.

3. UNEP has no role in selecting the annual theme.

With reference to environmental awareness events, consider the following statements:

1. The Stockholm Conference marked the first global political recognition of environmental issues.

2. World Environment Day was created as a follow-up to the 1992 Rio Earth Summit.

3. The 2024 theme emphasizes ecosystem restoration and resilience to drought.

Choose the correct statement(s):

1. World Environment Day 2023 highlighted technological solutions to plastic pollution.

2. The slogan “Beat Plastic Pollution” was first launched in 2023.

3. The 2023 host country was South Korea.

Consider the following statements about the 1972 Stockholm Conference:

1. It was the first UN conference focused on environmental issues.

2. It led to the formation of the UNEP.

3. It resulted in binding legal treaties on carbon emissions.