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a dye
an antibiotic
an antiseptic
known as aspirin
220 g of carbon dioxide contains .......... moles.
A ‘breath test’ used by traffic police to check drunken driving uses _?
A catalyst
A catalyst remains unchanged at the end of the reaction with regard to
A chemical used in photography is
A common fluorescent tube contains
A dark purple compound used as an antiseptic and disinfectant is
A Dewar flask is usually used to
A disaccharide is formed by the chemical bonding of
A foam is an example of a