S&T Miscellaneous for Prelims

Hydrogen Sulphide: Hydrogen sulphide (H2S) is a colourless chalcogen hydride gas with a characteristic foul odour. It is very poisonous, […]

About Helium: Helium is a chemical element with the symbol He and atomic number 2. It is a colourless, odourless,

700 MHZ spectrum was put for auction recently. No one bought it because of its high price. The advantage of

Metamaterials:  These are artificially crafted materials with unique internal microstructures that give them properties not found in nature. They are

Lead: Lead is a naturally occurring element found in small amounts in the earth’s crust. While it has some beneficial

Biodigester technology is an eco-friendly, cost-effective, decentralised, on-site human waste treatment. Biodigester technology uses anaerobic microbial consortium (Bacteria that do

Mass spectrometry (MS) is an analytical technique that is used to measure the mass-to-charge ratio of ions. The results are

Nanophotonics or nano-optics is the study of the behaviour of light on the nanometer scale, and of the interaction of nanometer-scale objects with light. Small lasers have various

Einsteinium, named after Albert Einstein is a synthetic element with the symbol Es and atomic number 99. It was discovered

Aquaponics: It is an emerging technique in which both fish as well as plants complement each other to sustain and