RRB NTPC GK Questions 2026

Bell received the patent for the telephone in 1876 and made the first call over a wire, carrying the human voice itself rather than a code.

Paul Hermann Muller is remembered for showing that DDT kills insects, work for which he received a Nobel Prize in Physiology or Medicine; vitamin D is associated with Edward Mellanby, who linked its absence to rickets, and with Adolf Windaus, who worked out its chemistry.

In 1796 Jenner showed that material from a cowpox sore protected a boy against smallpox, the first deliberate vaccination, and the word vaccine itself comes from vacca, the Latin for cow.

Roentgen, a German physicist, noticed in 1895 that a screen in his darkened laboratory glowed while a covered discharge tube was running, and he named the unknown radiation X-rays.

Kudankulam in the Tirunelveli district of Tamil Nadu uses pressurised water reactors of the Russian VVER type, supplied under an agreement signed with the Soviet Union in 1988 and carried forward by Russia.

The Jaduguda mine lies in the Singhbhum belt of Jharkhand and has been worked by the Uranium Corporation of India Limited, a public sector company set up in 1967, since the late nineteen sixties; it was the first uranium mine in the country.

On 11 May 1998 India tested three nuclear devices at Pokhran under Operation Shakti, followed by two more on 13 May, and the day was declared National Technology Day to mark that achievement along with the test flight of the Trishul missile and the first flight of the Hansa aircraft…

The test was carried out in the desert at Pokhran in Rajasthan on 18 May 1974 and was described by India as a peaceful nuclear explosion; Raja Ramanna led the team.

The second stage uses the plutonium 239 recovered from the spent fuel of the first stage as the fuel of a fast breeder reactor, with a blanket of thorium around the core that is converted into uranium 233; a breeder produces more fissile material than it burns, which is how…

Apsara went critical at Trombay near Mumbai on 4 August 1956 and was the first nuclear research reactor not only in India but in the whole of Asia; the CIRUS reactor of 1960 and the Dhruva reactor of 1985 were built at the same site, which is today the Bhabha…

Bhabha founded the Tata Institute of Fundamental Research in 1945, became the first chairman of the Atomic Energy Commission in 1948, drew up the three stage plan built around India's thorium, and led the establishment at Trombay that was renamed the Bhabha Atomic Research Centre after his death in 1966.

In a boiling water reactor, the design used at Tarapur, ordinary water is allowed to boil inside the reactor vessel itself, so the coolant leaving the core is a mixture of water and steam; the steam is separated at the top and driven straight to the turbine, without the separate…

The CANDU design, from which India's pressurised heavy water reactors descend, burns natural uranium, and natural uranium contains only about seven parts in a thousand of the fissile isotope uranium 235.

The Tarapur Atomic Power Station in Maharashtra was commissioned in 1969 with American assistance and was the first nuclear power station in India as well as in Asia; its first two units are boiling water reactors, a design used nowhere else in the country.

The National Automated Clearing House is a bulk clearing service of that corporation, used for repeated credits such as salary, pension, dividend and subsidy and for repeated debits such as loan instalments and utility bills.

The Magnetic Ink Character Recognition code has nine digits, of which the first three stand for the city, the next three for the bank and the last three for the branch; it is printed in magnetic ink so that a sorting machine can read it during cheque clearing.

UPI was launched in 2016 and allows a customer to pay from a bank account using a virtual payment address, so that the account number and the IFSC need never be shared; it runs on the same immediate settlement arrangement that IMPS introduced.

This Act designates the Reserve Bank as the authority for payment systems, makes its authorisation necessary before any payment system may be operated, and provides for the Board for Regulation and Supervision of Payment and Settlement Systems.

The Indian Financial System Code is made of eleven characters: the first four letters stand for the bank, the fifth is always the digit zero and is kept in reserve for future use, and the last six identify the particular branch.

NEFT holds instructions for a short period, works out what each bank owes the others on balance, and settles only that difference; the batches run every half hour through all twenty four hours, since the service was made available on all days of the year in December 2019.