IASbaba Daily Prelims Quiz
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The Current Affairs questions are based on sources like ‘The Hindu’, ‘Indian Express’ and ‘PIB’, which are very important sources for UPSC Prelims Exam. The questions are focused on both the concepts and facts. The topics covered here are generally different from what is being covered under ‘Daily Current Affairs/Daily News Analysis (DNA) and Daily Static Quiz’ to avoid duplication. The questions would be published from Monday to Saturday before 2 PM. One should not spend more than 10 minutes on this initiative.
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Question 1 of 5
1. Question
Consider the following statements regarding the Indian Grey Hornbill (Ocyceros birostris):
It belongs to the family Bucerotidae.
It is endemic to the Western Ghats.
The female seals herself inside the tree cavity during nesting, leaving only a narrow slit through which the male provides food.
It is classified as Least Concern under the IUCN Red List.
Which of the statements given above are correct?Correct
Solution (d)
Explanation
Statements 1, 3 and 4 are correct. The Indian Grey Hornbill (Ocyceros birostris) belongs to the family Bucerotidae and is classified as Least Concern (LC) by the IUCN. During breeding, the female seals herself inside a natural tree cavity using mud, fruit pulp and droppings, leaving only a narrow slit through which the male supplies food until the chicks are sufficiently developed.
Statement 2 is incorrect because the species is widely distributed across the Indian subcontinent in open woodlands, plains and urban landscapes. The Malabar Grey Hornbill, not the Indian Grey Hornbill, is endemic to the Western Ghats.
Why this question?
Tests species identification through distribution and breeding behaviour.
Why important for UPSC?
Species in news and IUCN status are recurring prelims themes.
PYQ Pattern Link
Similar to UPSC questions on Great Indian Bustard, Nilgiri Tahr and Hornbill species.Incorrect
Solution (d)
Explanation
Statements 1, 3 and 4 are correct. The Indian Grey Hornbill (Ocyceros birostris) belongs to the family Bucerotidae and is classified as Least Concern (LC) by the IUCN. During breeding, the female seals herself inside a natural tree cavity using mud, fruit pulp and droppings, leaving only a narrow slit through which the male supplies food until the chicks are sufficiently developed.
Statement 2 is incorrect because the species is widely distributed across the Indian subcontinent in open woodlands, plains and urban landscapes. The Malabar Grey Hornbill, not the Indian Grey Hornbill, is endemic to the Western Ghats.
Why this question?
Tests species identification through distribution and breeding behaviour.
Why important for UPSC?
Species in news and IUCN status are recurring prelims themes.
PYQ Pattern Link
Similar to UPSC questions on Great Indian Bustard, Nilgiri Tahr and Hornbill species. -
Question 2 of 5
2. Question
Q2. With reference to Sulphur Dioxide (SO₂), consider the following statements:
Coal-fired thermal power plants are the largest anthropogenic source of SO₂ emissions.
SO₂ is a primary precursor of sulphate aerosols contributing to PM₂.₅ formation.
Flue Gas Desulphurisation (FGD) technology can reduce SO₂ emissions by more than 90%.
SO₂ is a secondary pollutant formed by photochemical reactions involving nitrogen oxides.
Which of the statements given above are correct?Correct
Solution (a)
Explanation
Statements 1, 2 and 3 are correct. Sulphur Dioxide (SO₂) is primarily emitted from the combustion of sulphur-containing coal in thermal power plants, making them the largest anthropogenic source. In the atmosphere, SO₂ undergoes oxidation to form sulphate aerosols, a major contributor to PM₂.₅ and acid rain. Flue Gas Desulphurisation (FGD) systems can remove up to 95% of SO₂ emissions before flue gases are released.
Statement 4 is incorrect because SO₂ itself is a primary pollutant, emitted directly from sources. Sulphate aerosols are secondary pollutants derived from atmospheric transformation of SO₂.
Why this question?
Distinguishes primary pollutants from secondary pollutants.
Why important for UPSC?
Air pollution mechanisms are frequently tested.
PYQ Pattern Link
Comparable to UPSC questions on ozone, PM₂.₅ and acid rain.Incorrect
Solution (a)
Explanation
Statements 1, 2 and 3 are correct. Sulphur Dioxide (SO₂) is primarily emitted from the combustion of sulphur-containing coal in thermal power plants, making them the largest anthropogenic source. In the atmosphere, SO₂ undergoes oxidation to form sulphate aerosols, a major contributor to PM₂.₅ and acid rain. Flue Gas Desulphurisation (FGD) systems can remove up to 95% of SO₂ emissions before flue gases are released.
Statement 4 is incorrect because SO₂ itself is a primary pollutant, emitted directly from sources. Sulphate aerosols are secondary pollutants derived from atmospheric transformation of SO₂.
Why this question?
Distinguishes primary pollutants from secondary pollutants.
Why important for UPSC?
Air pollution mechanisms are frequently tested.
PYQ Pattern Link
Comparable to UPSC questions on ozone, PM₂.₅ and acid rain. -
Question 3 of 5
3. Question
Q3. Which one of the following correctly describes the Codex Alimentarius Commission (CAC)?
Correct
Solution (c)
Explanation
Option (c) is correct. The Codex Alimentarius Commission (CAC) was established in 1963 jointly by the Food and Agriculture Organization (FAO) and the World Health Organization (WHO).
It develops science-based international food standards, guidelines and codes of practice to protect consumer health and promote fair practices in international food trade.
While Codex standards are voluntary, they serve as international benchmarks under the WTO Agreement on Sanitary and Phytosanitary (SPS) Measures.
The WTO itself does not formulate these standards. CAC also does not enforce national food laws; implementation remains the responsibility of individual countries.
Why this question?
Tests distinction between FAO, WHO and WTO functions.
Why important for UPSC?
International organisations are recurring Prelims topics.
PYQ Pattern Link
Similar to UPSC questions on IPCC, IPBES and International Grains Council.Incorrect
Solution (c)
Explanation
Option (c) is correct. The Codex Alimentarius Commission (CAC) was established in 1963 jointly by the Food and Agriculture Organization (FAO) and the World Health Organization (WHO).
It develops science-based international food standards, guidelines and codes of practice to protect consumer health and promote fair practices in international food trade.
While Codex standards are voluntary, they serve as international benchmarks under the WTO Agreement on Sanitary and Phytosanitary (SPS) Measures.
The WTO itself does not formulate these standards. CAC also does not enforce national food laws; implementation remains the responsibility of individual countries.
Why this question?
Tests distinction between FAO, WHO and WTO functions.
Why important for UPSC?
International organisations are recurring Prelims topics.
PYQ Pattern Link
Similar to UPSC questions on IPCC, IPBES and International Grains Council. -
Question 4 of 5
4. Question
Consider the following statements regarding Introns:
Introns are transcribed into precursor mRNA but removed during RNA splicing.
Exons constitute the coding sequences retained in mature mRNA.
Alternative splicing enables a single gene to produce multiple proteins.
Introns are abundant in prokaryotes but generally absent in eukaryotes.
Which of the statements given above are correct?Correct
Solution (a)
Explanation
Statements 1, 2 and 3 are correct. Introns are non-coding DNA sequences that are transcribed into pre-mRNA but are removed during RNA splicing before translation. The remaining coding regions, known as exons, are joined together to produce mature mRNA. Through alternative splicing, different combinations of exons may be assembled, enabling a single gene to produce multiple proteins, thereby increasing protein diversity.
Statement 4 is incorrect because introns are common in eukaryotes, whereas they are rare in prokaryotes. This distinction is frequently used by UPSC as a conceptual elimination trap.
Why this question?
Tests biotechnology concepts through gene expression mechanisms.
Why important for UPSC?
Molecular biology remains a favourite Science topic.
PYQ Pattern Link
Comparable to UPSC questions on CRISPR, mRNA vaccines and gene editing.Incorrect
Solution (a)
Explanation
Statements 1, 2 and 3 are correct. Introns are non-coding DNA sequences that are transcribed into pre-mRNA but are removed during RNA splicing before translation. The remaining coding regions, known as exons, are joined together to produce mature mRNA. Through alternative splicing, different combinations of exons may be assembled, enabling a single gene to produce multiple proteins, thereby increasing protein diversity.
Statement 4 is incorrect because introns are common in eukaryotes, whereas they are rare in prokaryotes. This distinction is frequently used by UPSC as a conceptual elimination trap.
Why this question?
Tests biotechnology concepts through gene expression mechanisms.
Why important for UPSC?
Molecular biology remains a favourite Science topic.
PYQ Pattern Link
Comparable to UPSC questions on CRISPR, mRNA vaccines and gene editing. -
Question 5 of 5
5. Question
Q5. Consider the following statements regarding the Maldives:
It comprises about 1,192 coral islands grouped into 26 natural atolls.
It is the world’s lowest-lying country, with its highest natural point only about 2.4 metres above sea level.
It lies astride the Eight Degree Channel, separating it from Sri Lanka.
The Maldives is a member of both the Indian Ocean Rim Association (IORA) and the Colombo Security Conclave.
Which of the statements given above are correct?Correct
Solution (b)
Explanation
Statements 1, 2 and 4 are correct. The Maldives consists of approximately 1,192 coral islands arranged into 26 natural atolls, of which around 200 are inhabited. It is recognised as the world’s lowest-lying country, with its highest natural elevation of only about 2.4 metres above mean sea level, making it highly vulnerable to climate change and sea-level rise. The country also cooperates with India through organisations such as the Indian Ocean Rim Association (IORA) and the Colombo Security Conclave.
Statement 3 is incorrect because the Eight Degree Channel separates Minicoy (India) from the Maldives, not Sri Lanka from the Maldives.
Why this question?
Tests map-based geography through maritime channels and regional groupings.
Why important for UPSC?
Indian Ocean geopolitics remains a high-probability Prelims area.
PYQ Pattern Link
Comparable to UPSC questions on Ten Degree Channel, Nine Degree Channel and strategic maritime neighbours.Incorrect
Solution (b)
Explanation
Statements 1, 2 and 4 are correct. The Maldives consists of approximately 1,192 coral islands arranged into 26 natural atolls, of which around 200 are inhabited. It is recognised as the world’s lowest-lying country, with its highest natural elevation of only about 2.4 metres above mean sea level, making it highly vulnerable to climate change and sea-level rise. The country also cooperates with India through organisations such as the Indian Ocean Rim Association (IORA) and the Colombo Security Conclave.
Statement 3 is incorrect because the Eight Degree Channel separates Minicoy (India) from the Maldives, not Sri Lanka from the Maldives.
Why this question?
Tests map-based geography through maritime channels and regional groupings.
Why important for UPSC?
Indian Ocean geopolitics remains a high-probability Prelims area.
PYQ Pattern Link
Comparable to UPSC questions on Ten Degree Channel, Nine Degree Channel and strategic maritime neighbours.
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