Under the Namami Gange programme, what was the compliance level of grossly polluting industries in the Ganga basin in 2025?

The correct answer is 3,703. The 2025 inspection cycle covered 3,703 grossly polluting industries in all, spread over 113 districts in six states and one Union Territory, with the potential to discharge into 46 tributaries and sub-tributaries of the Ganga and Yamuna. Option A, 1,296, is wrong because that is only the Ganga basin share of the total. Option B, 2,407, is wrong for the same reason in reverse: it is the Yamuna basin share, and the two parts added together give the full figure. Option D, 3,154, is wrong because it counts the units found to be operational in 2025, up from 888 in 2017, rather than the number assessed. Inspections involve sampling at treatment plant inlets and outlets, readings of pH, BOD, COD, TSS and TDS, checks on online monitoring links and geo-tagged evidence of any bypass.

The correct answer is the Central Pollution Control Board. The annual inspection mechanism for grossly polluting industries in the Ganga basin began in 2017 with the support of the Central Pollution Control Board, described in the review as the national regulatory authority for this work. The inspections themselves are carried out by third-party agencies, mainly technical institutes of national importance, and 40 institutes have been nominated for the 2026 cycle against 25 engaged a year earlier. Each inspection team must include at least two experts from a technical institute along with a State Pollution Control Board officer. Option A is wrong because the clean Ganga mission runs the programme rather than serving as the regulator named here. Option C is wrong because groundwater assessment is only one element of the inspection method. Option D is wrong because the tribunal is a judicial forum and is not named in this inspection framework.

The correct answer is 72.46%. The review reports that the BOD load in the Ganga basin came down from 26 TPD in 2017 to 7.16 TPD in 2025, which works out to a reduction of 72.46%. Option A, 21.24%, is wrong because that figure measures the fall in effluent discharge in the same basin, from 349 MLD to 274.88 MLD, and not the organic load. Option B, 39%, is wrong because it is the compliance level of grossly polluting industries in 2017, the starting point for a rise to 86% by 2025. Option D, 65%, is wrong because that reduction belongs to the separate drive on high pollution-load units identified in 2022, whose load fell from 18.68 TPD to 6.381 TPD. Across both basins together, the BOD load eased from 26 TPD to 12.02 TPD over the same period.

The correct answer is Shastri Park, where the Delhi Pollution Control Committee has set up its AI-enabled Integrated Command and Control Centre, visited by the Union Environment Minister and the Delhi Chief Minister. The centre acts as a single digital platform bringing together data on air quality, dust control sites, ambient noise, industrial emissions, stubble burning incidents, citizen grievances and enforcement vehicles, and uses cameras and location tracking for round-the-clock watch. It is designed to link fifteen external data systems, of which nine have been connected and the remaining six are being added in phases. Option A, Anand Vihar, is the pollution hotspot the leaders reviewed and the place where the electric buses were flagged off, not the location of the centre. Options C and D, Keshopur and Nand Nagri, are two of the five depots where public electric vehicle charging stations were opened the same day.

The correct answer is 60. Delhi had forty-seven monitoring stations run by various agencies, among them the Delhi Pollution Control Committee, the Central Pollution Control Board, the India Meteorological Department, the Indian Institute of Tropical Meteorology and the ministry dealing with housing and urban affairs. With thirteen new stations set up by the pollution control committee being inaugurated, the network grew to sixty stations. Option A is the number of stations before the new additions, so it is the earlier figure rather than the current one. Option B is simply the sum of a wrong pair of numbers and does not appear in the announcement, and option D is too high. The minister explained that besides the older population-based norms, monitoring now follows a grid of one station for every twenty-five square kilometres, and that this grid would be extended to other cities in the National Capital Region. Readings reach the public through the board's server and the SAMEER mobile application.