Defence GK Questions 2026

In 1865 the overland line through the Ottoman Empire and Persia was joined to a submarine cable in the Persian Gulf, and messages could pass between Britain and India for the first time.

Arranged from most acidic to most basic, the four substances fall in exactly this order. Lemon juice, rich in citric acid, has a pH of about 2 to 2.5.

The Dashavatara temple at Deogarh stands in Lalitpur district of Uttar Pradesh, on the bank of the Betwa river. Built around the early sixth century, it is one of the earliest Hindu temples in north India and is dedicated to Vishnu.

A pattern that looks like the branches of a tree or the veins of a leaf, formed on uniform rock with a regular slope, is dendritic.

The Research Design and Standards Organisation (RDSO) is the sole research and development wing of the Ministry of Railways. RDSO is headquartered at Lucknow.

Apabhramsha was a literary language that took recognisable shape by about the sixth century, formed from regional speech mixed with the Prakrits and Sanskrit.

The Swadeshi Movement grew out of the protest against the partition of Bengal, and the Extremists, Aurobindo Ghosh among them, wanted to turn it into a nationwide mass struggle.

When crude supply is disrupted, oil prices rise, and almost every good in India becomes costlier to make and move.

In this chain each organism is eaten by the next: grass, a producer, is eaten by the goat, a herbivore, and the goat is eaten by humans, so energy passes in a straight line.

Nagaland was the only Indian state whose population fell between 2001 and 2011; its decadal growth rate in Census 2011 was about −0.6 per cent.

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.