Tuesday, 1 September 2026

With reference to Ghepan Lake, consider the following statements:

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The Chandra and Bhaga rivers meet at Tandi to form which river?

Satellite analysis recorded the lake's mapped area growing from 36.49 hectares in 1989 to 101.30 hectares in 2022. This expansion:

Why is Sissu's position on the Manali-Leh road corridor significant for disaster planning?

Consider the following statements:

Statement-I: The figure of 34 exposed settlements is not a forecast that those places will be flooded.

Statement-II: The number comes from modelled flood scenarios that identify where preparedness is most urgent.

Which one of the following is correct in respect of the above statements?

With reference to rotenone, consider the following statements:

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Potassium permanganate is used in such lake treatments in order to:

The northern pike is described as invasive in parts of Alaska even though it is native there. This is because:

Why is chemical treatment sometimes preferred over netting and electrofishing for eradication?

Consider the following statements:

Statement-I: Eradication is strongest when reinvasion can be prevented.

Statement-II: Agencies must protect outlets and address illegal fish movement, otherwise the ecological cost of treatment can be repeated later.

Which one of the following is correct in respect of the above statements?

With reference to the Attunli Hydroelectric Project, consider the following statements:

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What does the term 'run-of-river' describe about a hydropower project?

With reference to clearances for such a project, consider the following statements:

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The Talo, also called the Tangon River, on which the project is planned, belongs to which basin?

Why is cumulative assessment important when several hydropower projects are proposed in one basin?

With reference to scorpions, consider the following statements:

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The species name gracilipalpus was chosen because the scorpion has:

How did DNA evidence support the new species description?

Consider the following statements:

Statement-I: The study does not establish that this scorpion is dangerous to people.

Statement-II: All scorpions possess venom for prey capture, but effects vary greatly and no evidence here shows exceptional danger.

Which one of the following is correct in respect of the above statements?

With reference to the Sharp-tailed Sandpiper, consider the following statements:

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Najafgarh Jheel is best described as a wetland that:

Why is a single unusual bird record treated with caution by experienced observers?

Why can rapid drainage of a shallow wetland quickly remove habitat for waders?

Consider the following statements:

Statement-I: A rare sighting at Najafgarh does not show that the species has shifted its entire range.

Statement-II: Young birds may take different routes from adults, and weather or wetland loss can displace individuals during long journeys.

Which one of the following is correct in respect of the above statements?

With reference to the geography of Germany, consider the following statements:

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With reference to India-Germany relations, consider the following statements:

Which of the statements given above is/are correct?

Why must India often engage several institutions when pursuing environmental projects in Germany?

Consider the following statements:

Statement-I: The Environment Forum by itself does not implement environmental projects.

Statement-II: It coordinates priorities and partnerships, while individual projects need separate funding, design, legal approvals and implementation.

Which one of the following is correct in respect of the above statements?

With reference to stingless bees, consider the following statements:

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Why did the researchers rely on male anatomy to separate this species from its relatives?

The colonies of this new species were found:

Consider the following statements:

Statement-I: Tetragonula nagalandensis and Tetragonula yikhumensis are not two names for the same bee.

Statement-II: They were described from different localities in Nagaland, and their close publication dates can cause mistaken reporting.

Which one of the following is correct in respect of the above statements?

With reference to the Ramon Magsaysay Award, consider the following statements:

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Tommy Koh, a 2026 recipient, is best known for his central role in negotiations for:

In the Bangladeshi context, 'chars' where the organisation Friendship began its work are:

The Assistance Association for Political Prisoners, co-founded by Bo Kyi, mainly:

With reference to AstroSat, consider the following statements:

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Why must gamma-ray bursts be detected by instruments in space?

How can the Cadmium Zinc Telluride Imager detect bursts arriving from outside its coded field of view?

Why does the observed duration of a gamma-ray burst not by itself establish its source?

Consider the following statements:

Statement-I: A Gamma-ray Coordinates Network circular is not a final peer-reviewed result.

Statement-II: Such circulars are rapid scientific communications that let telescopes begin follow-up quickly, and later publications may revise duration or energy.

Which one of the following is correct in respect of the above statements?

Coral bleaching occurs when:

With reference to the fourth global bleaching event, consider the following statements:

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The measure known as degree heating weeks is used to capture:

Consider the following statements:

Statement-I: Local reef management cannot by itself prevent repeated mass bleaching.

Statement-II: Repeated mass bleaching is driven primarily by greenhouse-gas warming, so local action reduces avoidable stress while emissions fall.

Which one of the following is correct in respect of the above statements?