Identify the type of chemical reaction taking place on heating copper powder in the air in a china dish, the surface of copper powder turns black.
Important Questions on Chemical Reactions and Equations
Identify the type of chemical reaction taking place on heating green coloured ferrous sulphate crystals, reddish-brown solid is left and smell of gas has the odour of burning sulphur is experienced.
Identify the type of chemical reaction taking place when iron nails left dipped in blue copper sulphate solution become brownish in colour and the blue colour of copper sulphate fades away.
Identify the type of chemical reaction taking place when quick lime reacts vigorously with water releasing a large amount of heat.
Why aluminium sheets do not corrode easily? Why does a copper vessel get covered with a green coating in the rainy season?
You are provided with two containers made up of copper and aluminium. You are also provided with solutions of dilute , dilute , and . In which of the above containers these solutions can be kept?
Explain the following term:
Precipitation reaction.
Rancidity.
Translate the following statement into chemical equation and then balance it.
Carbon disulphide burns in air to give carbon dioxide and sulphur dioxide.
