Skip to content Home Questions Play Progress Daily Challenge Questions › Chemistry › Chemistry in Everyday Life Questions QUESTION Which of the following is used to remove the green colour from glass? Open question → QUESTION Which listed compound is a principal irritant component of pepper spray? Open question → QUESTION NPK refers to which listed type of product? Open question → QUESTION Which of the following gases is known as “Laughing Gas”? Open question → QUESTION Which sweetener has molecular formula C₁₄H₁₈N₂O₅ and is about 200 times sweeter than sucrose? Open question → QUESTION Who was credited with discovering the hydrogen isotope, or heavy hydrogen, for which he later received the 1934 Nobel Prize in Chemistry? Open question → QUESTION Which listed chemist developed chemical silvering of glass for mirrors in the nineteenth century? Open question → QUESTION Which among the following is used as the fining agent in wine? Open question → QUESTION Which listed reaction contributes to browning and flavour development when meat is roasted or seared? Open question → QUESTION Which listed mineral is not a conventional toothpaste ingredient because it is a lead-sulphide ore? Open question → QUESTION Why is water fluoridation, which is the controlled adjustment of fluoride to public water supply, done? Open question → QUESTION Saw dust is used to adulterate: Open question → QUESTION Which listed compound is used as a fumigant pesticide for stored cereals? Open question → QUESTION Which listed synthetic food colour is designated E104 and is used in specified foods and beverages where permitted? Open question → QUESTION In standard high-temperature short-time pasteurisation of ordinary fluid milk, what minimum temperature is paired with a holding time of at least 15 seconds? Open question → QUESTION Which listed food antioxidant is also used as an antioxidant constituent in defoaming formulations for yeast processing? Open question → QUESTION Which sodium salt of glutamic acid is commonly added to Chinese food, canned vegetables, soups and processed meats to enhance the flavour? Open question → QUESTION Which of the following pairs correctly matches a food product with a common, toxic adulterant used to alter its appearance? Open question → QUESTION Which listed gas is used with oxygen for inhalation sedation and analgesia in dentistry? Open question → QUESTION Which listed synthetic red azo dye has been reported as an unauthorised colour adulterant in hot paprika? Open question → QUESTION Which listed sodium compound is used as an antimicrobial preservative against yeasts and moulds in some acidic fruit juices? Open question → QUESTION Which compound is a building block of polycarbonate, a hard clear plastic used in some beverage bottles and household products? Open question → QUESTION Which listed laboratory screening result supports suspected metanil-yellow adulteration in turmeric? Open question → QUESTION Which listed simple method can indicate chalk-powder contamination in wheat flour? Open question → Home Questions Play Progress 