Name two metals which are found in nature in the free state.
Name two metals which are found in nature in the free state.
The metals at the bottom of the reactivity series are mostly found in free state. For example: gold, silver, and platinum.
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Give reasons : Sodium, potassium and lithium are stored under oil.
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Give reasons : Platinum, gold and silver are used to make jewellery.
Give reasons : Platinum, gold and silver are used to make jewellery.
What would you observe when zinc is added to a solution of iron $(II) $ sulphate ? Write the chemical reaction that takes place.
What would you observe when zinc is added to a solution of iron $(II) $ sulphate ? Write the chemical reaction that takes place.
Food cans are coated with tin and not with zinc because
Food cans are coated with tin and not with zinc because
Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in figure below.
$(a)$ What will be the action of gas on
$(i)$ dry litmus paper ?
$(ii)$ moist litmus paper ?
$(b)$ Write a balanced chemical equation for the reaction taking place.
Pratyush took sulphur powder on a spatula and heated it. He collected the gas evolved by inverting a test tube over it, as shown in figure below.
$(a)$ What will be the action of gas on
$(i)$ dry litmus paper ?
$(ii)$ moist litmus paper ?
$(b)$ Write a balanced chemical equation for the reaction taking place.