NDA GK Questions 2026

A secondary pollutant is never emitted from a source; it is manufactured in the atmosphere itself when primary pollutants react with one another or with sunlight.

He was the founder of Rashtrakuta power and overthrew the last important Chalukya of Badami, Kirtivarman II, about 753 CE.

The Nayanars were the Shaiva saints of the Tamil bhakti movement, traditionally counted as sixty-three, and they included Appar, Sambandar, Sundarar and Manikkavachakar.

The Pandyas ruled the extreme south of the peninsula from Madurai on the Vaigai, with the pearl-fishing port of Korkai on the coast.

He reached India in 630 CE, stayed for about fifteen years, and studied Yogachara philosophy at the Nalanda mahavihara under its head, the aged monk Shilabhadra.

He ruled in the early eighth century and marks the structural phase of Pallava architecture, when temples were built up of dressed stone instead of being cut from living rock.

He is also called Mamalla, the great wrestler, and the port city of Mamallapuram or Mahabalipuram takes its name from that title.

Harsha inherited Thanesar in modern Haryana from the Pushyabhuti family. When his sister Rajyashri's husband Grahavarman, the Maukhari king of Kannauj, was killed, Harsha united the two realms and moved his seat to Kannauj on the Ganga, which then became the symbol of paramountcy in northern India for the next…

The Aihole inscription was composed in Sanskrit by Ravikirti, the Jain court poet of the Chalukya king Pulakeshin II of Badami.

Banabhatta was the court poet of Harsha in the seventh century CE. He wrote the Harshacharita, the biography of his patron and the first historical biography in Sanskrit, and the prose romance Kadambari, which was completed by his son Bhushanabhatta.

Harshavardhana was a dramatist as well as a king, and three Sanskrit plays are credited to him: Ratnavali, Priyadarshika and Nagananda.

Shashanka was the king of Gauda, the region of Bengal with its centre at Karnasuvarna. He killed Harsha's elder brother Rajyavardhana, and it was to avenge that killing, and to recover his sister Rajyashri, that Harsha declared war and allied with Bhaskaravarman of Kamarupa.

Harishena belonged to an earlier century altogether: he was the court poet of Samudragupta and composed the Prayag Prashasti, the Allahabad Pillar Inscription.

The resistance of a wire equals the resistivity of the material multiplied by the length and divided by the area of cross section.

It is the energy consumed by an appliance of one kilowatt working for one hour, and it equals three point six million joules.

The tangent drawn to a magnetic field line at any point gives the direction of the field at that point.

The fuse is a short piece of wire of low melting point placed in series in the live line, so that an excessive current melts it and breaks the circuit.

In 1831 Faraday showed that when the magnetic flux linked with a closed coil changes, whether by moving a magnet, moving the coil or changing the current in a nearby coil, a current is induced in it.

In Fleming's left hand rule the forefinger, the middle finger and the thumb of the left hand are held at right angles to one another: the forefinger points along the magnetic field, the middle finger along the current, and the thumb then gives the direction of the force.

Hold the conductor in your right hand with the thumb stretched along the direction of the conventional current; the way your fingers curl round the wire is the direction of the concentric magnetic field lines.