Which of the following are 'pure substances' ?Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air
Iron and mercury are pure substances (elements).
Hydrochloric acid, calcium oxide, and ice are also pure substances (compounds).
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- Classify the following into good conductors, resistors and insulators:Rubber, Mercury, Nichrome, Polythene, Aluminium, Wood, Manganin, Bakelite, Iron, Paper, Thermocol, Metal coin
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