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?

ഇന്ത്യയുടെ ദേശീയ ബഹിരാകാശ ദിനാഘോഷത്തെ സംബന്ധിച്ച ശരിയായ വാക്യം/വാക്യങ്ങൾ തെരഞ്ഞെടുക്കുക

(i) എല്ലാ വർഷവും ആഗസ്റ്റ് 23 ന് ആചരിച്ചു വരുന്നു

(ii) 'ചന്ദ്രനെ തൊടുമ്പോൾ ജീവിതങ്ങളെ സ്പ‌ർശിക്കൽ : ഇന്ത്യയുടെ ബഹിരാകാശ സാഗ' എന്നതാണ് ഇന്ത്യയുടെ ദേശീയ ബഹിരാകാശ ദിനം 2025-ലെ പ്രതിപാദ്യം

(iii) ഇത് ചന്ദ്രയാൻ ചന്ദ്രനിൽ വിജയകരമായി ഇറങ്ങിയതിന്റെ സ്മരണക്കായി ഏർപ്പെടുത്തിയതാണ്

(v) ഇത് ചൊവ്വ ഭ്രമണപഥദൗത്യത്തിന്റെ വിജയസൂചകമായുള്ള ആചരണമാണ്

(v) ഇത് ഇന്ത്യയുടെ ബഹിരാകാശ ദൗത്യങ്ങളെക്കുറിച്ച് പൗരന്മാർക്കിടയിൽ വർദ്ധിച്ച ആവേശവും അവബോധവും സൃഷ്ടിക്കുന്നു

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.

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 first introduced the term "Ecosystem"?

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

Which of the following years marked the inception of World Environment Day as a global observance?

Who among the following coined the term "Ecology", marking a foundational moment in environmental science?

Which of the following countries, apart from India, is known to have operationalized the AKASH missile system?

The AKASH missile system is developed by DRDO and manufactured by:

Which of the following accurately distinguishes BRAHMOS from AKASH in terms of their guidance systems?

BRAHMOS is characterized by its high speed and versatile launch capabilities. Which of the following best differentiates it from traditional cruise missiles?

Which of the following best describes the class and capabilities of the AKASH missile system?

Consider the following statements about HELINA:

1. It is launched from helicopters and used for ground targets.

2. It uses radio frequency guidance and laser homing.

Which of the statements is/are correct?

Which of the following best explains the difference between Trishul and NAG missiles?

1. Trishul was a SAM, while NAG is an ATGM.

2. Trishul was inducted in service; NAG was discontinued.

3. NAG uses IIR guidance; Trishul did not.

Which of the following statements is/are correct about NAMICA?

1. It is a land-based launcher platform for NAG missiles.

2. It is developed for anti-aircraft operations.

Which of the following missile systems belong to the category of “fire-and-forget”?

1. NAG

2. Maitri

3. Trishul

Consider the following statements:

1. Trishul's inability to meet service requirements led to the proposal of Maitri.

2. Maitri, although planned, was never developed due to the adoption of the Barak system.

Which of the statements given above is/are correct?

Which of the following statements are true about the Trishul missile’s testing history?

1. The first test was conducted in 1985 at Sriharikota as an unguided flight.

2. Multiple successful tests were conducted from ITR in 2004.

3. The missile was officially inducted into Indian armed forces in 2005.

Which of the following are correct features of the NAG missile?

1. It uses Imaging Infrared (IIR) guidance.

2. Its operational range is between 500 meters and 5 kilometers.

3. It is developed jointly by DRDO and Russia.

Consider the following statements regarding the NAG missile system:

1. It is a fire-and-forget, third-generation anti-tank missile.

2. NAMICA is the air-based version of the NAG missile.

3. HELINA is the land-based version of the NAG missile.

Which of the above is/are correct?

Which of the following statements are correct?

1. Trishul had a successful test reaching Mach 2 in 1992.

2. Maitri missile was a joint venture between DRDO and Israel Aerospace Industries.

3. Maitri was designed to have a low-level, quick reaction capacity.