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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What are amphoteric oxides? Give two examples of amphoteric oxides.
What are amphoteric oxides? Give two examples of amphoteric oxides.
Which of the following pairs will give displacement reactions ?
Which of the following pairs will give displacement reactions ?
Define the following terms.
$(i)$ Mineral $(ii)$ Ore $(iii)$ Gangue
Define the following terms.
$(i)$ Mineral $(ii)$ Ore $(iii)$ Gangue
Food cans are coated with tin and not with zinc because
Food cans are coated with tin and not with zinc because
Differentiate between metal and non-metal on the basis of their chemical properties.
Differentiate between metal and non-metal on the basis of their chemical properties.