Defence GK Questions 2026

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.

After fertilisation each structure of the flower turns into the next stage in exactly this way. When a male gamete from the pollen tube fuses with the egg cell inside the ovule, the fertilised egg becomes the zygote.

Water gas is made by passing steam over red-hot coke, and the reaction C + H₂O → CO + H₂ gives carbon monoxide and hydrogen in roughly equal volumes.

Watt's improvements turned the steam engine from a device that merely pumped water out of mines into a source of power for factory machines.

Southern Argentina is Patagonia, a cold, dry steppe and desert region lying in the rain shadow of the Andes, so it does not have a humid subtropical climate.

Intercontinental ballistic missiles came first in 1957, communication satellites followed from 1958 onwards, and the World Wide Web arrived only around 1989 to 1991.

In an apple, the fleshy part we eat develops from the thalamus, the swollen tip of the flower stalk, and not from the ovary, which is why it is called a false fruit.

A ring of muscle at the lower end of the stomach, the pyloric sphincter, opens and closes to let food pass into the small intestine a little at a time.

The Champaran Satyagraha of 1917 was Gandhiji's first satyagraha in India, and its great significance was that it tied the grievances of peasants to the national movement.

Shale gas resources have been identified in all three basins: Cambay, Cauvery and Krishna-Godavari. Shale gas is natural gas, mostly methane, trapped in fine-grained sedimentary rock called shale, and it is extracted by horizontal drilling and hydraulic fracturing.

Only the first pair is correct: Chaliha Sahib is a festival of the Sindhi community. During Chaliha, Sindhis observe forty days of fasting and prayer, usually in July and August, in honour of Jhulelal, the patron deity of Sindhis, ending with thanksgiving at a river or other water body.