Medium
What can be seen when a strip of copper metal is placed in a solution of silver nitrate?
- AThe solution turns green and silver metal is deposited.
- BThe solution turns blue and silver metal is deposited.
- CThe solution remains colorless and copper metal dissolves.
- DNo reaction occurs.
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The colour formed on the surface of copper powder when it is heated in a china dish is:
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View SolutionTranslate the following statements into chemical equations and then balance them.
$(a)$ Hydrogen gas combines with nitrogen to form ammonia.
$(b)$ Hydrogen sulphide gas burns in air to give water and sulphur dioxide.
$(a)$ Hydrogen gas combines with nitrogen to form ammonia.
$(b)$ Hydrogen sulphide gas burns in air to give water and sulphur dioxide.
Medium
View SolutionGive reasons for the following:
$(i)$ Moist air and acidic gases are not good for some metals.
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$(i)$ Moist air and acidic gases are not good for some metals.
$(ii)$ Chips manufacturers usually flush bags of chips with nitrogen gas.
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The insoluble substance formed during a chemical reaction is known as a precipitate.
The insoluble substance formed during a chemical reaction is known as a precipitate.
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