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Daily-mcqs 14 Nov 2025
Q1:
With reference to Ricin, consider the following statements: 1. Ricin is a protein toxin derived from the seeds of Ricinus communis, which is also used for castor oil production. 2. Ricin causes cellular damage primarily by inhibiting DNA replication. 3. Ricin exposure can occur through ingestion, inhalation, or injection. 4. A specific antidote is available globally for ricin poisoning. How many of the above statements are correct?
A: Only one
B: Only two
C: Only three
D: All four
Answer: B
Explanation:
Statement 1 is correct. Ricin is obtained from castor beans (Ricinus communis), widely cultivated for castor oil.
Statement 2 is incorrect. Ricin is lethal because it blocks protein synthesis by binding to ribosomes, not by inhibiting DNA replication.
Statement 3 is correct. Ricin exposure can occur via ingestion, inhalation, or injection — all potentially fatal at low doses.
Statement 4 is incorrect. There is no specific antidote for ricin poisoning; treatment is only supportive.
Q2:
Ricin is listed as a Schedule 1 toxin under the Chemical Weapons Convention (CWC). What does Schedule 1 classification typically imply? 1. The substance has few to no legitimate civilian uses. 2. It poses a high risk and can be used as a weapon of mass destruction. 3. Its production, storage, and transfer are strictly prohibited except for research in very small quantities. Select the correct answer:
A: 1 and 2 only
B: 1 and 3 only
C: 2 and 3 only
D: 1, 2, and 3
Answer: D
Explanation:
Schedule 1 chemicals under CWC are those that have no significant industrial or peaceful use, are high-risk, and have strictly controlled production/possession limited only to research or medical purposes in minimal quantities.
Ricin qualifies due to extreme toxicity and its history in assassinations/bioterror attempts, including the Georgi Markov case.
Hence, all three statements are correct.
Q3:
With reference to India’s ranking in the Climate Risk Index 2026, consider the following statements: 1. India ranks 9th in the long-term CRI covering 1995–2024. 2. India ranks 3rd globally in terms of economic losses in 2024. 3. India ranks 15th in the CRI for 2024. 4. India is among the top three globally in people affected by extreme weather in 2024. Select the correct answer:
A: 1 and 2 only
B: 1,3 and 4 only
C: 2 ,3 and 4 only
D: 1, 2, 3 and 4
Answer: B
Explanation:
Statement 1 is correct: India ranks 9th long-term.
Statement 3 is correct: India ranks 15th in 2024.
Statement 4 is correct: India ranks 3rd in people affected in 2024.
Statement 2 is incorrect: India is not ranked 3rd for economic losses, but for people affected.
Q4:
With reference to the Global TB Report 2025, consider the following statements: 1. It is published annually by the World Health Organization. 2. It assesses TB trends related to incidence, mortality, diagnosis, prevention, and treatment. 3. India accounts for nearly one-third of global TB cases as per the 2025 report. How many of the above statements are correct?
A: Only one
B: Only two
C: All three
D: None
Answer: B
Explanation:
Statement 1 is correct: The Global TB Report is an annual WHO publication.
Statement 2 is correct: It covers full-spectrum TB indicators at global, regional, and national levels.
Statement 3 is incorrect: India contributes 25%, i.e., approximately one-fourth.
Q5:
With reference to global and regional TB trends, consider the following statements: 1. TB incidence globally fell by about 1.7% between 2023–2024. 2. The Americas region has shown a consistent decline in TB incidence since 2020. 3. South-East Asia accounts for the largest proportion of global TB cases. Select the correct answer:
A: 1 and 2 only
B: 1 and 3 only
C: 2 and 3 only
D: 1, 2, and 3
Answer: B
Explanation:
Statement 1 is correct: WHO reported a 1.7% decline between 2023–2024.
Statement 2 is incorrect: The Americas saw a continued rise in TB cases for the fourth consecutive year.
Statement 3 is correct: South-East Asia contributes 34% of global TB cases, the highest share
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