NDA GK Questions 2026

Scurvy is caused by a lack of vitamin C, or ascorbic acid, which the body needs to make collagen, the protein that holds skin, gums and blood vessels together.

Chloropropane has two carbon–carbon bonds, seven carbon–hydrogen bonds and one carbon–chlorine bond, all single covalent bonds, making 10 in total.

Beats are heard when two sound waves of slightly different frequencies overlap, so their combined loudness rises and falls regularly.

Fleming's right-hand rule is used for electromagnetic induction, as in a generator, and its middle finger gives the direction of the current induced in the conductor.

Paleogeography is the study of the Earth's geography in the geological past, and its main product is a set of maps showing where continents, oceans, mountains and shorelines lay at different times.

NCERT's Class 10 chemistry chapter on acids, bases and salts states that our body works within the narrow pH range of 7.0 to 7.8, which is slightly basic.

Cowasjee Nanabhoy Davar, a Parsi businessman of Bombay, set up the Bombay Spinning and Weaving Company, which began production in 1856 and is regarded as India's first modern cotton mill.

Mahendragiri, about 1,501 metres high, stands in the Gajapati district of southern Odisha, close to the Andhra Pradesh border.

The Abhijit Sen Committee dealt with agricultural economics, not local self-government. Its best-known reports were on a long-term grain policy in 2002 and on whether futures trading pushed up farm prices in 2008.

The bronchi only carry air between the windpipe and the lungs; their walls are too thick for oxygen and carbon dioxide to pass into the blood, so no gas exchange happens there.

All four are parts of the two complex permanent tissues of plants: tracheids and vessels belong to xylem, while sieve tubes and companion cells belong to phloem.

Sunlight takes about 8 minutes and 20 seconds, roughly 500 seconds, to travel from the Sun to the Earth. The average distance between the Sun and the Earth is about 150 million kilometres, a distance called one astronomical unit.

In 1665 Hooke looked at a thin slice of cork under his self-made microscope, saw tiny box-like compartments and named them cells, from the Latin word cella, meaning a small room.

Majuli lies in the Brahmaputra in Assam, formed between the main channel of the Brahmaputra to the south and the Subansiri and Kherkutia Suti channels to the north.

This is false because viruses have no chlorophyll, no cell organelles and no metabolism of their own, so they cannot make food in any way.

This statement is false, because diamond is an electrical insulator: all four valence electrons of each carbon atom are locked in covalent bonds, leaving no free electrons to carry current.

Starlight bends as it passes through layers of air of changing temperature and density, and because these layers keep moving, the star's apparent position and brightness flicker.

Operation Olivia is the Indian Coast Guard's annual mission, begun in the early 1980s, to protect Olive Ridley turtles off the Odisha coast.

Buoyancy, also called upthrust, is the upward force that a liquid or gas exerts on any object placed in it.

All three statements are true: Lachit Borphukan was the Ahom commander who defeated the Mughals at Saraighat, and the NDA's best cadet receives a gold medal in his name.