RRB Group D GK Questions 2026

The Makrana quarries have been worked for centuries and their calcitic white marble went into the Taj Mahal at Agra, the Victoria Memorial at Kolkata and many temples and palaces; the stone is prized because it takes a high polish and weathers slowly.

Tungsten, in the form of the ore wolframite, is mined at the Rewat hill near Degana in Nagaur district, which has long been the main tungsten occurrence of the country.

Jhamarkotra, a short distance from Udaipur city, is the largest rock phosphate deposit in the country and the main domestic source of raw material for phosphatic fertiliser, which India otherwise imports in large quantity.

The Khetri Copper Complex in Jhunjhunu district, with the Madan Kudan and Kolihan mines, is the centre of copper mining in Rajasthan and is run by a central public sector company.

The Zawar mines lie south of Udaipur city and have been worked since ancient times; archaeologists have found clay retorts there that were used to distil zinc, which makes Zawar the earliest known zinc smelting site anywhere in the world.

Rampura Agucha lies in Bhilwara district and is the largest lead and zinc mine of the country, worked for many years as a very large open pit and now mined underground; silver comes out of the same ore as a by product.

Coarsely ground rice flour is pinched between finger and thumb and released in a thin stream, which makes it the easiest material to draw with, but the tradition gives a second reason: ants, insects, sparrows and squirrels eat the flour through the day, so the morning drawing is treated as…

Chowk purana, also written chowkpurna, means the filling in of the chowk, the square of the courtyard.

Muggu is the Telugu cousin of the Tamil kolam, drawn in rice flour or white powder before the door, often around a grid of dots.

Jhoti and chita are drawn with a thin white paste of ground rice, applied with a piece of cloth or with the fingertips, on the floor and the walls around the door.

Aripan, also written aripana, is drawn with a paste of ground rice on the floor of the courtyard, the place of worship and the marriage pavilion.

A pookalam is laid in concentric rings of petals, leaves and whole flowers, and a fresh one is made on each of the ten days of the festival, growing larger as the days pass, with competitions for the best design in schools, offices and neighbourhoods.

In aipan the surface is first washed with geru, the local red ochre, and the pattern is then drawn on it with a white paste of ground rice using the fingers.

Alpana, or alpona, is applied wet: rice is soaked, ground into a white paste and painted on the floor with a cloth wick or with the fingers, which lets the artist draw flowing creepers, paddy sheaves, lotuses, owls and footprints.

Mandana reverses the usual method: the floor or the lower wall is first washed with geru, the red ochre of the region, and the design is then laid over it in white chalk or lime, so the figure is light on a red field.

The kolam is the Tamil threshold drawing, made each morning in white rice flour on ground that has been swept and sprinkled.

The crust is the outermost and thinnest layer of the earth and is of two kinds. The continental crust, made largely of lighter granitic rock rich in silica and aluminium, averages about thirty kilometres in thickness and reaches about seventy kilometres under young fold mountains such as the Himalaya.

Plate tectonics, propounded in 1967, holds that the lithosphere is broken into seven major plates and a number of minor ones that move over the plastic asthenosphere.

Near Easter Island in the South Pacific the rise spreads at more than fifteen centimetres a year, the highest rate measured, while the Arctic Ridge in option A has the slowest rate of less than two and a half centimetres a year.

It lies between South America and the Pacific plate and is one of the well known minor plates, along with the Cocos, Arabian, Philippine, Caribbean, Juan de Fuca, Scotia, Caroline and Fuji plates.