RRB NTPC GK Questions 2026

The splitting of white light into its seven component colours by a prism is called dispersion. White light is a mixture of colours, and glass bends each colour by a different amount because its refractive index depends on wavelength.

A refrigerator moves heat from a cold space to a warmer room, which never happens on its own, and the second law explains what it takes to make it happen.

The Uttar Pradesh government launched the One District One Product programme in January 2018, picking one traditional product for every district and backing it with credit, design, packaging, skill and marketing support so that the craft could be sold outside its own market.

Gulabi Meenakari is the pink enamelling of Varanasi, in which a rose-pink colour is fired into engraved silver or gold to make birds, flowers and small figures, and it survives with a handful of families in the city.

Bhadohi is called the carpet city and is the largest carpet weaving cluster in India, with looms spread through the neighbouring parts of Mirzapur, Varanasi and Sant Ravidas Nagar.

The Geographical Indications Registry works from Chennai under the Controller General of Patents, Designs and Trade Marks, which comes under the Department for Promotion of Industry and Internal Trade in the Ministry of Commerce and Industry.

Firozabad, near Agra, is called the glass city of India. Its furnaces blow and press glass into bangles, chandeliers, beads, bottles and laboratory ware, and the bangle trade alone supports a very large number of small units in the town, which is why Firozabad is the standard answer whenever glass…

Nizamabad is a town in Azamgarh district, and its potters make thin walled black pottery that is rubbed with mustard oil, fired in a closed kiln so that the smoke blackens the clay, and then decorated with silver-coloured patterns applied with a zinc and mercury paste.

Khurja is a town in Bulandshahr district of western Uttar Pradesh, and its thick glazed pottery, painted in bright floral patterns on a white ground, is sold as Khurja pottery and is a registered geographical indication.

Kannauj is called the perfume capital of India. Its distillers work by the deg and bhapka method, in which flower petals, herbs or sandalwood are heated in copper vessels over a wood fire and the vapour is condensed into a receiver containing sandalwood oil.

Moradabad has worked brass for centuries into engraved, enamelled and lacquered vessels, lamps and decorative ware, and the trade gave it the name Peetal Nagri.

Chikankari is the shadow embroidery of Lucknow, worked in white thread on fine cotton, muslin or chiffon, and its stitches, tepchi, bakhiya, murri, phanda and jaali, are learnt as a set.

Maharana Pratap was born in 1540 at Kumbhalgarh in the present Rajsamand district, the hill fort that Rana Kumbha had built in the previous century, and which served Mewar as a refuge whenever Chittor itself was under threat.

The Hawa Mahal was built in 1799 by Sawai Pratap Singh of Jaipur to a design by the architect Lal Chand Ustad.

Jaigarh fort stands on the ridge above Amer near Jaipur and held the foundry of the Jaipur state, where the Jaivana cannon was cast in the eighteenth century.

The six forts in the inscription are Chittorgarh, Kumbhalgarh, Ranthambore, Amer, Jaisalmer and Gagron.

The inscription of 2013 is a serial property, which means several separate sites listed together under one name, and the Hill Forts of Rajasthan is made up of six forts: Chittorgarh, Kumbhalgarh, Ranthambore, Amer, Jaisalmer and Gagron.

The Bhati ruler Rawal Jaisal founded the fort on the Trikuta hill in 1156, and the town that grew below it carries his name.

Gagron fort stands in Jhalawar district in the Hadoti region, at a point where the Ahu river joins the Kali Sindh, so that water guards it on three sides and only one side faces open land.

Kumbhalgarh, in Rajsamand district, was built in the fifteenth century by Rana Kumbha with the architect Mandan, and the rampart that winds along the Aravalli ridges around it runs for about 36 km, which is why it is so often compared with the Great Wall of China.