Railway GK Questions 2026

The Gujarat sultan Ahmad Shah I founded Ahmedabad in 1411 near the older settlement of Asaval and Karnavati, and the city became the capital of the Gujarat Sultanate and a great centre of textile trade; the Bhadra fort and the Jama Masjid date from this period.

Akbar began building Fatehpur Sikri near Agra from 1571, naming it after his victory in Gujarat, and it served as his capital for roughly fourteen years before the court returned to Agra and later moved to Lahore.

Devagiri in the Deccan, the old Yadava capital, was renamed Daulatabad by Muhammad bin Tughlaq, who ordered the transfer of the court and the population of Delhi there in 1327 so that he could control both north and south from the centre of his empire.

The fifth ruler of the Qutb Shahi dynasty founded Hyderabad in 1591 on the banks of the Musi, a short distance from the crowded hill fort of Golconda, and the Charminar was raised in his reign at the centre of the new city.

The Kachhwaha ruler Sawai Jai Singh II moved his capital down from the hill fort of Amer and founded Jaipur in 1727, laying it out on a grid of nine rectangular blocks with the help of the scholar and planner Vidyadhar Bhattacharya, which makes it the first planned city of…

Udayin, also called Udayabhadra, was the son of Ajatashatru and the ruler of the Haryanka dynasty who built a fort at the meeting point of the Ganga and the Son and shifted the Magadhan capital there from Rajagriha.

Karewas are thick beds of fine clay, silt and sand laid down on the floor of a Pleistocene lake that once filled the Kashmir Valley; they form flat terraces above the Jhelum's floodplain, and the karewas around Pampore in Pulwama district produce the saffron for which the valley is famous…

The Damodar Valley Corporation was set up by an Act of Parliament in 1948, the first multipurpose river valley project of independent India, and it was consciously modelled on the Tennessee Valley Authority of the United States, which had combined flood control, irrigation, navigation and power generation in one basin…

The Ziro Valley in the Lower Subansiri district of Arunachal Pradesh is the home of the Apatani, who grow rice and rear fish in the same flooded field without using draught animals, a system studied as a model of sustainable wet-land farming; the valley is on India's tentative list for…

Yumthang lies beyond the village of Lachung in north Sikkim, at roughly 3,500 metres, and the Shingba Rhododendron Sanctuary around it gives the valley the popular name of the Valley of Flowers of Sikkim; hot springs rise on the bank of the Lachung river and the Zero Point lies further…

A rift valley is a strip of land that has subsided between two roughly parallel faults, and both the Narmada, between the Vindhya and the Satpura, and the Tapi, between the Satpura and the Ajanta hills, occupy such troughs.

Duns, called duars in the eastern Himalaya, are flat-floored longitudinal valleys formed where coarse sediment carried down by Himalayan rivers was trapped between the Lesser Himalaya and the rising Shivalik range.

The Silent Valley National Park in the Palakkad district of Kerala, part of the Nilgiri Biosphere Reserve, is drained by the Kunthipuzha, a tributary of the Bharathappuzha, and the park protects one of the last undisturbed blocks of tropical evergreen forest in the Western Ghats, with the lion-tailed macaque as…

The Valley of Flowers National Park lies in the Chamoli district of Uttarakhand, in the Bhyundar valley drained by the Pushpawati, and it is inscribed on the World Heritage list together with the Nanda Devi National Park.

The Kullu Valley in Himachal Pradesh, along the Beas between Manali and Bhuntar, is called the Valley of the Gods because of the many village deities carried in procession at the Kullu Dussehra, which begins on the day the festival ends elsewhere in India.

The Nubra Valley lies north of Leh, reached across the Khardung La, where the Nubra river joins the Shyok, itself a tributary of the Indus; the sand dunes at Hunder carry the double-humped Bactrian camels left behind by the old Central Asian caravan trade, and the Diskit monastery stands above…

The Kashmir Valley is a broad structural basin about 135 kilometres long lying between the Pir Panjal in the south-west and the Great Himalaya, with its Zanskar branch, in the north-east; the Jhelum meanders across its flat floor and leaves it through a gorge at Baramulla into the Wular lake.

The law states that for a mixture of gases that do not react, the total pressure is the sum of the partial pressures each gas would exert if it alone occupied the whole volume at the same temperature.

The root mean square speed follows from the kinetic gas equation and equals the square root of three RT divided by the molar mass, or equally the square root of three times the Boltzmann constant times the temperature divided by the mass of one molecule.

The kinetic theory of an ideal gas assumes exactly the opposite: that there are no forces of attraction or repulsion between molecules except during the brief moment of a collision.