6130.The characteristic odour of Garlic is due to which one of the following?
Chlorine-containing compounds
Fluorine-containing compounds
Nitrogen-containing compounds
Sulphur-containing compounds
6137.When an ant bites a person, which irritating chemical it (ant) injects into his (person) body?
Acetic acid
Citric acid
Tartaric acid
Formic acid
6140.Washing soda is the common name for
Calcium carbonate
Calcium bicarbonate
Sodium carbonate
Sodium bicarbonate