Defence GK Questions 2026

Fusion is the joining of two light nuclei into a heavier one, with a neutron or other products released and a large amount of energy appearing because the mass of the product is slightly less than the mass of the reactants; in ITER the reaction fuses deuterium and tritium into…

A hydrogen bomb, also called a thermonuclear bomb, uses a fission explosion only as a trigger; the main energy comes from the fusion of the heavy hydrogen isotopes deuterium and tritium into helium at temperatures of millions of degrees, which is why the process is described as thermonuclear or thermal…

This institute of the Department of Atomic Energy is the national centre for plasma and fusion research, it houses the domestic agency ITER-India that supplies India share of the machine, and it operates India own tokamaks Aditya and SST-1, the Steady State Superconducting Tokamak.

ITER is coming up at Saint-Paul-les-Durance in the Cadarache area of southern France, and its seven partners are the European Union, China, India, Japan, Russia, South Korea and the United States; the name is the Latin word for the way.

These are the two general purpose detectors on the LHC ring, and in July 2012 both independently reported a new particle of about 125 giga-electronvolts that matched the Higgs boson, the particle linked to the field that gives mass to other particles; the Nobel Prize in Physics of 2013 went…

The European Organization for Nuclear Research, founded in 1954, has its campus at Meyrin on the outskirts of Geneva in Switzerland, and because its tunnels run under the border, parts of the laboratory lie in France as well.

The Large Hadron Collider occupies a circular tunnel about 27 kilometres around, lying roughly 100 metres below the ground on the Swiss-French border near Geneva, and it is the largest and most powerful particle accelerator ever built; the tunnel was originally dug for an earlier CERN machine, the Large Electron-Positron…

Bt cotton carries genes from the soil bacterium Bacillus thuringiensis, which make the plant produce a protein toxic to bollworm larvae.

The Genome India Project was launched in January 2020 by the Department of Biotechnology, which works under the Ministry of Science and Technology, and brings together about twenty academic institutions to sequence Indian genomes and build a reference set that reflects the country's genetic diversity.

The Centre for DNA Fingerprinting and Diagnostics was established in 1995 as an autonomous institution of the Department of Biotechnology and works at Hyderabad on DNA fingerprinting services, diagnostics of genetic disorders and research in genomics.

In the Watson and Crick model the two strands are held together by hydrogen bonds between complementary bases: adenine pairs with thymine through two hydrogen bonds and guanine pairs with cytosine through three.

The polymerase chain reaction, invented by Kary Mullis in 1983, repeats three steps: the DNA is denatured near ninety-five degrees Celsius, short primers anneal at a lower temperature, and the strand is extended at about seventy-two degrees.

The Human Genome Project was launched in 1990 as an international public effort coordinated in the United States by the National Institutes of Health and the Department of Energy, with laboratories in several countries taking part.

Each nucleotide of DNA carries a phosphate group, and the phosphate backbone gives the whole molecule a net negative charge at the pH used in the laboratory.

Cas9 is an enzyme that breaks the sugar-phosphate backbone of both DNA strands at the point where its guide RNA has bound, provided a short adjacent signal called the PAM is present.

The two scientists showed that the bacterial CRISPR-Cas9 system could be directed by a designed guide RNA to cut any chosen sequence of DNA, which turned a microbial defence mechanism into a general tool for editing genomes, and they shared the Nobel Prize in Chemistry in 2020.

Working at the University of Leicester in 1984, Alec Jeffreys found that certain short sequences, the minisatellites or variable number tandem repeats, repeat a different number of times in different people, and that a pattern made from them identifies an individual.

The Palghat gap, about thirty kilometres wide in Palakkad district of Kerala, is the broadest break in the whole chain and carries the road and the railway line that join Coimbatore in Tamil Nadu to Palakkad and Thrissur in Kerala.

It was constituted under the Environment (Protection) Act to advise the central government on coastal matters and to work with the State and Union Territory Coastal Zone Management Authorities, which examine proposals and prepare the Coastal Zone Management Plans that draw the High Tide Line and the zone boundaries on…

That strategy asked that land falling within ten kilometres of the boundaries of National Parks and Wildlife Sanctuaries be notified as ecologically fragile, and the National Wildlife Action Plan carried the same thought forward, which is how the ten kilometre figure entered the discussion on Eco-Sensitive Zones.