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Answer: Aluminium is a good conductor of heat, lightweight, non-toxic, and resistant to corrosion, making it ideal for cookware.
Answer: Effervescence is seen due to hydrogen gas release. Zinc reacts with H₂SO₄ forming zinc sulphate and H₂ gas:
Zn + H₂SO₄ → ZnSO₄ + H₂↑
Answer: Non-metals are defined based on chemical properties. Sulphur is brittle, non-conductive, forms acidic oxides, and doesn’t lose electrons – typical of non-metals.
Answer: They are noble metals – chemically inert and do not react with air, moisture, or most acids, hence resist corrosion.
Answer: Both are excellent conductors of electricity and are ductile, allowing them to be drawn into thin wires.
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