NDA GK Questions 2026

A Passage Exercise is the short exercise two navies run when their ships are in company, usually as one of them sails on after a harbour visit, and it lets crews practise manoeuvring, communication and formation keeping together.

These three vessels sailed as the First Training Squadron on this deployment and entered Colombo harbour, where the Sri Lanka Navy welcomed them with a ceremonial reception and a naval band.

This statement is false, because sound in air travels as longitudinal waves, not transverse waves. In a longitudinal wave, the particles of the medium vibrate back and forth along the direction in which the wave moves, forming compressions and rarefactions.

Power is the reciprocal of the focal length in metres, so P = 1 ÷ 0.25 m = +4 D. The power of a lens tells how strongly it converges or diverges light.

A solar cell turns the energy of sunlight directly into electricity through the photovoltaic effect. A solar cell is a large p-n junction, usually made of silicon.

With the same voltage, heat varies inversely as resistance, and the parallel resistance is one-fourth of the series resistance. The two wires are identical, so each has the same resistance R. In series the total resistance is R + R = 2R; in parallel it is R/2.

Tidal volume is the volume of air breathed in or out in one normal, quiet breath, about 500 mL in a healthy adult.

The cornea is a clear layer made of cells and proteins, chiefly collagen fibres laid out in a regular pattern that keeps it transparent.

The time period of a simple pendulum depends on its length but not on the mass of the bob, so halving the length divides the period by √2.

Potential difference is the work done per unit charge, so V = W/Q = 24 J ÷ 2 C = 12 V. The potential difference between two points is the work needed to move one coulomb of charge from one point to the other.

Pepsin works in the strongly acidic stomach, while trypsin works in the mildly alkaline small intestine. Pepsin is secreted by the chief cells of the stomach as inactive pepsinogen, which hydrochloric acid from the parietal cells turns into pepsin.

"Not Me But You" is the motto of the NSS, and it stands for selfless service to others. The National Service Scheme was launched on 24 September 1969, the birth centenary year of Mahatma Gandhi, with the aim of building the personality of students through community service.

India has had 28 States and 8 Union Territories since 26 January 2020. The Jammu and Kashmir Reorganisation Act, 2019 turned the State of Jammu and Kashmir into two Union Territories, Jammu and Kashmir and Ladakh, from 31 October 2019.

The UN Security Council began with 6 non-permanent members and has had 10 since 1965, each elected for a two-year term.

Statements I and II are true, but the Ninth Plan began in 1997, the fiftieth year of Independence, not the sixtieth.

Sentosa is a small resort island just off the southern coast of the main island of Singapore. Sentosa lies across a narrow channel from Singapore's main island and is linked to it by a causeway, a cable car and a monorail.

Indian Standard Time is 5 hours 30 minutes ahead of Greenwich Mean Time, so noon in New Delhi is 6:30 in the morning in London.

The Helmand rises in the Hindu Kush west of Kabul, crosses southern Afghanistan and ends in the Hamoun wetlands on the Afghanistan-Iran border.

A batholith is the largest intrusive igneous body and forms deepest in the crust, so it lies lowest of all these forms.

The Phukot Karnali project is a 480 MW hydropower scheme on the Karnali river in western Nepal, developed with India's NHPC.