Railway GK Questions 2026

Cave 16 at Ellora in Maharashtra, the Kailasa temple, was cut under the Rashtrakuta king Krishna I in the eighth century.

The Brihadeeswarar temple, also called the Rajarajeswaram, was completed by Rajaraja I at Thanjavur in about 1010 and is the first of the three Great Living Chola Temples inscribed as a UNESCO World Heritage Site.

He built the Sun Temple at Konark in Odisha in the thirteenth century, designing the whole shrine as the chariot of the sun god with twelve pairs of carved stone wheels drawn by seven horses.

The Hawa Mahal, the five-storeyed screen of pink sandstone pierced by hundreds of small windows so that royal women could watch processions in the street unseen, was built at Jaipur in 1799 by Sawai Pratap Singh, with Lal Chand Ustad as its architect.

The Gol Gumbaz at Bijapur in Karnataka is the tomb of Muhammad Adil Shah of the Adil Shahi dynasty and was finished in about 1656.

Bega Begum, also called Haji Begum because she had made the pilgrimage to Mecca, had the tomb built at Delhi from about 1565 and engaged the Persian architect Mirak Mirza Ghiyas for it.

Aibak, the founder of the Slave or Mamluk dynasty of Delhi, laid the foundation of the Qutub Minar in 1199 and completed only its first storey.

Shah Jahan raised the Taj Mahal over the grave of his wife Mumtaz Mahal, and the court records name Ustad Ahmad Lahori as the chief architect of the work, which went on at Agra from about 1632 to 1653.

The Bahai House of Worship, known the world over as the Lotus Temple, stands at Bahapur near Kalkaji in New Delhi.

The International Solar Alliance was launched jointly by India and France at the Paris climate conference on 30 November 2015 to bring together countries lying largely between the tropics, and its headquarters is at Gwal Pahari in Gurugram, Haryana.

Free hydrogen does not occur in any usable quantity on earth, so it has to be made from water or from a hydrocarbon by spending energy, and it then stores and delivers that energy elsewhere.

A fuel cell converts the chemical energy of hydrogen directly into electrical energy without combustion, so it is not bound by the efficiency limit of a heat engine.

SIGHT is the largest component of the mission, with an outlay of seventeen thousand four hundred ninety crore rupees, and it has two parts: incentives for manufacturing electrolysers in India and incentives for producing green hydrogen, both awarded through competitive bidding.

The MNRE is the nodal ministry for the mission, frames the guidelines for each of its components and notified the Green Hydrogen Standard for India in August 2023.

The mission aims to build a green hydrogen production capacity of at least five million metric tonnes a year by 2030, with the potential to rise further if an export market develops, and this is the single figure most often asked from the mission.

The Union Cabinet approved the National Green Hydrogen Mission on 4 January 2023 with this outlay, to be spent up to the financial year 2029-30 across incentives, hubs, pilot projects, research and skilling.

The Ministry of New and Renewable Energy notified the Green Hydrogen Standard for India in August 2023, fixing the limit at two kilograms of carbon dioxide equivalent for each kilogram of hydrogen, averaged over twelve months, and covering the whole chain from water treatment through electrolysis, purification, drying and compression…

Blue hydrogen is made by the same fossil route as grey hydrogen, usually steam reforming of natural gas, but the carbon dioxide produced is captured and stored underground instead of being released, so its emissions are much lower though not zero.

Hydrogen is called green only when the electricity that splits the water comes from a renewable source such as solar or wind, so that no carbon dioxide is released in making it.

Diu, on the coast of Gujarat, was declared the first union territory in India to run entirely on solar power.