ആദിമകാലത്ത് അതിസാന്ദ്രതയാൽ ഘനീഭവിച്ച പ്രപഞ്ചം ശക്തമായ മർദ്ദത്താൽ പൊട്ടിത്തെറിച്ചാണ് ഇന്നുള്ള പ്രപഞ്ചം ഉണ്ടായത് എന്ന് പ്രസ്‌താവിക്കുന്ന സിദ്ധാന്തം ?

'ദി ഒറിജിൻ ഓഫ് കെമിക്കൽ എലമെന്റ്സ്' എന്ന ഗ്രന്ഥം പ്രസിദ്ധീകരിച്ചത് ആര് ?

മഹാവിസ്ഫോടന സിദ്ധാന്തം അവതരിപ്പിക്കപ്പെട്ടത് ഏത് ഗ്രന്ഥത്തിലൂടെയാണ് :

പ്രപഞ്ചോത്‌പത്തിയെക്കുറിച്ചുള്ള പ്രധാന സിദ്ധാന്തങ്ങൾ തിരഞ്ഞെടുക്കുക :

1. സ്‌പന്ദന സിദ്ധാന്തം
2. ഭൗമകേന്ദ്ര സിദ്ധാന്തം
3. സൗരകേന്ദ്ര സിദ്ധാന്തം
4. മഹാവിസ്ഫോടന സിദ്ധാന്തം

പ്രപഞ്ചോത്പത്തി, വികാസം എന്നിവയെക്കുറിച്ച് പഠിക്കുന്ന ശാസ്ത്രശാഖ :

കോപ്പർ നിക്കസ്ന്റെ പ്രധാന ഗ്രന്ഥങ്ങൾ തിരഞ്ഞെടുക്കുക :

1. ജ്യോഗ്രഫി
2. ദി റവല്യൂഷനിബസ്
3. അൽമജസ്റ്റ്
4. ജ്യോതിർ ഗോളങ്ങളുടെ പരിക്രമണം

സൗരയൂഥം എന്ന ആശയം ആദ്യമായി അവതരിപ്പിച്ചത് ?

"ജ്യോതിശാസ്ത്രത്തിൻ്റെ പിതാവ്' ആയി കണക്കാക്കുന്നത് :

ഗ്രഹങ്ങൾ സൂര്യനെ ചുറ്റുന്നു എന്ന് ആദ്യമായി പ്രസ്‌താവിച്ച ഇന്ത്യൻ ശാസ്ത്രജ്ഞൻ :

സൂര്യനാണ് പ്രപഞ്ചത്തിന്റെ കേന്ദ്രം എന്ന് പ്രസ്താവിക്കുന്ന സിദ്ധാന്തം ?

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

Which of the following is not a cause of cultural lag?

ബഹിരാകാശത്തുവച്ച് ഉപഗ്രഹങ്ങളെ കൂട്ടിയോജിപ്പിക്കുന്ന 'സ്പേസ് ഡോക്കിംഗ് വിജയകരമായി പരീക്ഷിച്ച നാലാമത്തെ രാജ്യമാണ് ഇന്ത്യ. ഏതൊക്കെ ഉപഗ്രഹങ്ങളെയാണ് 'സ്പേസ് ഡോക്കിംഗ് വഴി ബന്ധിപ്പിച്ചത്?

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.

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.