The National Zoological Park, New Delhi, functions under which Union ministry?

The correct answer is 2 to 8 October 2026. The zoo has planned a week of walks and competitions in that window, among them a tree walk, a birds walk, a butterfly and dragonfly walk, a spider and insect walk, a reptile, amphibian and molluscs walk, a keeper's talk with enclosure enrichment, and contests in clay modelling, poster making, debate, essay writing, drawing, rangoli and quiz, besides online photography and quiz activities. Options A, C and D shift the window by a day or more and do not match the announcement. Two further details are worth carrying with the dates: no fee is charged for any walk, activity or competition, and free entry is given to participants along with their teachers, accompanying staff and parents, as well as to children up to twelve years of age.

The correct answer is 47 species, with sightings of more than seven hundred and fifty individual birds during the walk. Options A, B and D are not figures reported from the exercise. Along with the birds, the walkers recorded eight butterfly species, ten dragonfly species and five damselfly species in the walk area, which the zoo treats as evidence of the diversity of odonates and butterflies inside the park. The observations were made between half past six and half past ten in the morning under bird expert Rohit Sharma and butterfly and dragonfly expert Ramver. The zoo describes such walks as citizen science, since ordinary visitors contribute field records that add to biodiversity documentation while learning to identify species themselves. Fifteen participants joined this walk, and the zoo caps each Sunday nature walk at twenty to twenty-five people so the session stays useful.

The correct answer is 20 to 25 participants, a cap the zoo keeps so that each walk stays a close and useful learning exercise rather than a crowd. Options A, C and D do not match the limit set for these walks. Registration beforehand is compulsory and is accepted first come, first served through a form that stays open from Monday to Friday every week, with the link put up on the official website of the National Zoological Park and on the NZP Sathi mobile application. Note the distinction between this cap and the turnout at the walk being reported, which was fifteen participants. For Wildlife Week the zoo has invited school students from government and private schools across Delhi-NCR, and charges no fee for any activity.

The correct answer is October 2014. Scientific management of municipal solid waste has been a core objective of the mission since that launch, and as the mission grew, organic waste came to be treated as a resource for clean energy rather than as rubbish. The waste-to-energy work described at Prayagraj, Gwalior, Hyderabad and Gandhinagar all falls under the urban arm of the mission in its second phase. Option B, August 2014, is close enough in the same year to catch a hasty reader, but it is the wrong month. Option C, October 2015, keeps the right month and moves the year by one, the commonest form of trap in date questions. Option D, April 2016, matches neither. A helpful anchor is that cleanliness is tied to the birth anniversary of Mahatma Gandhi, which falls on the second of October, so the month of the launch is easy to fix in memory.

The correct answer is Hyderabad. At the Bowenpally Vegetable Market roughly ten tonnes of vegetable and fruit waste is collected each day, and since an on-site biogas plant came up almost all of it is used rather than sent to landfill. The plant makes about 400 to 500 units of electricity and 30 kg of biofuel daily, which run the streetlights, stalls, administrative building and water supply network, while the biofuel goes to the market's kitchen and to a generator that works wholly on biogas. The power bill has come down by about half from roughly three lakh rupees a month, and five more plants have been funded at Gudimalkapur, Gaddiannaram, Erragadda, Alwal and Saroornagar. Options A, B and D are large cities in other states and none of them was named for this model, so they only test whether the candidate has tied the market's name to the right city.