Railway GK Questions 2026

A haloalkane carries a halogen atom - fluorine, chlorine, bromine or iodine - bonded to a carbon chain, so no oxygen appears in its functional group at all.

Cyclohexane is a closed ring of six carbon atoms joined by single bonds, and each carbon carries two hydrogen atoms, which gives C6H12.

The alkene series begins at two carbon atoms, so its first member is ethene, C2H4, and its second member is propene, C3H6.

C3H4 is propyne, and it fits the alkyne general formula CnH2n-2 when n equals 3. Alkynes are unsaturated hydrocarbons that carry at least one carbon-to-carbon triple bond, and the first member of the family is ethyne, C2H2, better known as acetylene and burnt with oxygen in welding torches.

Put n equal to 3 in the alkyne general formula CnH2n-2 and the result is C3H4, which is propyne, the second member of the alkyne series.

An alkene is an unsaturated hydrocarbon in which two carbon atoms are joined by a double bond, so the carbon-to-carbon double bond is its identity.

Alkanes are saturated hydrocarbons, so every bond between two carbon atoms is a single bond and all the remaining valencies are filled by hydrogen.

The d-block sits in the middle of the periodic table, bridging the s-block on the left and the p-block on the right.

The halogens are placed in Group 17 of the modern periodic table. This family has five members - fluorine, chlorine, bromine, iodine and astatine.

The SETU NSP App brings scholarship services onto a single platform, and lending has nothing to do with the Pre-Matric and Post-Matric Scholarships it serves.

The correct answer is the Ministry of Social Justice and Empowerment, through its Department of Social Justice and Empowerment, which launched the app in April 2026.

The app carries this name together with the National Scholarship Portal and belongs to the Ministry of Social Justice and Empowerment, serving beneficiaries of the Pre-Matric and Post-Matric Scholarships for Scheduled Castes and Other Backward Classes.

Phase-II follows the two-year Phase-I pilot and is designed to test the methods in varied conditions so that region-specific Standard Operating Procedures can be established.

For decades these two have been the mainstay of post-harvest pest control in the country’s grain reserves, and their widespread, repeated use is what pushed pest resistance to 72 to 100 per cent in key states while raising fumigation cycles and costs.

The correct answer is ICAR-CIPHET, Ludhiana, the Central Institute of Post-Harvest Engineering and Technology, which will carry out the two-year Phase-I of the project on alternatives to chemical fumigation in wheat and rice.

The correct answer is Keshav Chandra, Secretary, Ministry of Mines, who launched the auction virtually for the grant of a Composite Licence.

Both blocks are described as holding deposits of this kind, and they host cobalt, nickel, manganese, copper and rare earth elements, which are needed for advanced manufacturing, clean energy technology, electric mobility and electronics.

The Ministry of Mines offered Sewell Rise-01, in the southern part of Sewell Rise, and West Sewell Ridge-01, which lies off Great Nicobar Island, and both blocks sit in the Andaman Sea.

Earlier guidelines made annual renewal compulsory; the new framework sets validity by the recorded percentage of disability so that beneficiaries are spared repeated formalities.

The ministry announced the revision and stated that the new guidelines would come into force from that date, covering both the issuance and the renewal of exempted FASTags for eligible Divyangjan and persons with disabilities.