NDA GK Questions 2026

Water passes through limestone along its joints and bedding planes, and slowly dissolves the rock as it goes. Limestone is a sedimentary rock made mainly of calcium carbonate.

Of the four, the Sabarmati is both the shortest river and the one with the smallest basin. The Sabarmati rises in the Aravalli hills of Rajasthan and flows about 370 km south-west through Gujarat, past Ahmedabad and Gandhinagar, into the Gulf of Khambhat.

Equal and opposite forces acting for the same time give equal and opposite changes in momentum, so the total stays the same.

Only statement 2 is wrong, because it reverses the date-line rule. The Earth turns 360° in 24 hours, or 15° every hour, so neighbouring standard time zones are usually one hour apart (statement 1).

By the 2011 Census, Bihar was the most densely populated State, followed by West Bengal, Kerala and Uttar Pradesh. The 2011 Census gave these densities in persons per square kilometre: Bihar 1,106, West Bengal 1,028, Kerala 860 and Uttar Pradesh 829, against a national average of 382.

Atoms get smaller along a period and larger down a group. Moving from left to right in a period, electrons are added to the same shell while the nuclear charge rises by one at each step.

The speed of the wave is frequency times wavelength, 700 m/s, and 2,100 m at 700 m/s takes 3 seconds.

Prokaryotes have no true nucleus, so there is no membrane around their genetic material. Prokaryotes are the simplest cells: bacteria and cyanobacteria (blue-green algae).

The Raksha Mantri made the announcement there on 31 October 2025, on the sidelines of the 12th ADMM-Plus, and the forum held in New Delhi is the follow-through on that commitment.

Speaking at the forum, the Raksha Mantri noted that this year has been designated the ASEAN-India Year of Maritime Cooperation and treated it as a chance to convert shared interest into practical steps: better sharing of maritime information, closer work between navies and coast guards, and the ability to respond…

At the forum the Defence Minister placed MAHASAGAR alongside SAGAR, which expands to Security and Growth for All in the Region, and said both, together with the Act East policy, argue for open and multipolar cooperation channelled through ASEAN-led mechanisms that sit at the centre of India’s Indo-Pacific vision.

The maiden ASEAN-India Defence Think Tank Forum was convened at the Manohar Parrikar Institute for Defence Studies and Analyses in New Delhi, where Raksha Mantri Rajnath Singh addressed delegates from India and all eleven ASEAN member states across a two-day programme.

Hedgehogs and pangolins curl into a tight ball when threatened, covering the soft belly and face with spines or scales; marmots do not.

The Sutlej is an antecedent river that rises in Tibet, flows through China, India and Pakistan, waters huge irrigated areas and, being a tributary, ends without forming a delta or distributaries.

Cyanobacteria and diatoms carry out photosynthesis, so they are phytoplankton, the primary producers at the base of ocean food chains.

At Chandipur beach in Balasore district of Odisha the sea pulls back several kilometres at low tide and returns at high tide, so visitors can walk on the exposed sea bed.

Lemongrass and its close relative citronella grass yield aromatic oils that keep mosquitoes away, so they are the base of many natural repellents.

Dust is indeed concentrated in subtropical and temperate belts, but the reason is that these belts have more dry winds, not less.

A diode does not obey Ohm's law: the current through it is not proportional to the voltage across it. An ohmic conductor gives a straight-line graph of current against voltage, so its resistance stays constant at a fixed temperature.

Anhydrous sodium carbonate is Na₂CO₃, and 2 × 23 + 12 + 3 × 16 = 106 u. Formula mass is the sum of the atomic masses of all the atoms in one formula unit of an ionic compound.