The c and d reasons please. Also,
Why are lemon and tamarind juice used in cleaning tarnished copper vessels?
Give reasons why copper is used to make hot water tanks and not steel which is an alloy of iron.
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aluminium is a highly reactive metal. when it is exposed to air it forms a whitish oxide which is a protective covering preventing further reaction. besides this aluminium is a good conductor of heat so it is used in making cooking utensils for faster cooking.
iron is above copper in the metal reactivity series and hence more reactive. it reacts with hot steam and forms ferric oxide which makes the body of water tank weak while copper does not do this. hence it is preferred.
copper + CO2 forms copper carbonate layer on copper vessels and diminishes its shine. the citric acid or tartaric acid in the lemon or tamarind neutralises the base CuCO3 and dissolves it. thus it can be used to clean vessels.
obtaininga metal from its oxide is much easier than obtaining it from its carbonate or sulphide form. hence they are converted durinh mettalurgy.
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iron is above copper in the metal reactivity series and hence more reactive. it reacts with hot steam and forms ferric oxide which makes the body of water tank weak while copper does not do this. hence it is preferred.
copper + CO2 forms copper carbonate layer on copper vessels and diminishes its shine. the citric acid or tartaric acid in the lemon or tamarind neutralises the base CuCO3 and dissolves it. thus it can be used to clean vessels.
obtaininga metal from its oxide is much easier than obtaining it from its carbonate or sulphide form. hence they are converted durinh mettalurgy.
hope it helps
pls mark BRAINLIEST and FOLLOW me.
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