What is meant by entanglement sudden death?

The correct answer is the Raman Research Institute, an autonomous institution of the Department of Science and Technology, whose Quantum Information and Computing laboratory led the work. The team worked with the University of Calgary and Louisiana State University, and the study was funded in part by the National Quantum Mission, the flagship mission of the same department. The other options name well known Indian research institutions in astrophysics, nuclear physics and fundamental research, none of which the release credits with this study. Two names are worth carrying away with the institute: Urbasi Sinha, the group leader of the laboratory and a senior professor there, who said that timing is not merely an experimental detail but a control resource, and Saumya Ranjan Behera, the lead author of the paper, which appeared in Physical Review A in July.

The correct answer is the National Quantum Mission, described in the release as the flagship mission of the Department of Science and Technology, which funded part of this study. The other options name real national missions, which is what makes the question a fair test rather than a giveaway. The National Supercomputing Mission builds high performance computing capacity, the mission on interdisciplinary cyber-physical systems supports technology innovation hubs across fields such as robotics and artificial intelligence, and the Deep Ocean Mission works on deep sea exploration and technology; none of them is credited here. The practical importance of the result is that in a quantum computer there is a limit on how long quantum information survives before it decays, and this experiment shows that within such a limit the timing of a single operation can change the fate of the entanglement.

The correct answer is Mission Mausam. The Minister said around forty more radars are planned under this mission, which would raise the national total to roughly eighty-one. Options B, C and D are invented names placed here because they sound plausible in the same policy area; no such missions were named in connection with the radar network. The wider point of the announcement is that preparedness does not rest on radars alone. Automatic Weather Stations and rain gauges are being installed across Odisha down to district and school level, and radio sonde stations and microwave radiometers are being deployed, so that a multi-layered observation network can support localised forecasts useful to farming, disaster management and the power sector. The mission is run by the Ministry of Earth Sciences.

The correct answer is 14. The Minister contrasted the position a decade ago with the present network, which has now reached 51 radars with the commissioning of the Sambalpur facility. Option A is wrong because no such figure was cited for that year. Option C is wrong for the same reason and simply sits between the old and new numbers to tempt a hurried guess. Option D is a trap of a different kind: that is the number of additional radars planned under Mission Mausam, which would take the national total to about 81, not the count for the base year. Learn the three numbers as a set, because questions on this topic usually ask for one while offering the other two as distractors.

The correct answer is Sambalpur, Odisha. The Union Minister of State for Earth Sciences inaugurated the radar virtually in the presence of the Chief Minister of Odisha, and its main job is to strengthen weather watch over Western Odisha along with adjoining parts of southern Jharkhand, northern Chhattisgarh, north Andhra Pradesh and West Bengal. Options A and C are wrong because Paradip and Gopalpur already had radars before this one; with Sambalpur the state now counts three. Option D is wrong because Balasore is only in the pipeline, along with Puri and Bhubaneswar, and no radar was commissioned there on this day. Candidates should remember the pattern of such questions, which mix places that already have a facility with places that are only planned.