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प्रश्न
Explain,giving one example of the following chemical changes:
Reversible reaction
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उत्तर
Reversible reaction
A chemical reaction in which the direction of a chemical change can be reversed by changing the conditions under which the reaction is taking place is called a reversible reaction.
CuSO4.5H2O(s) ⇋ CuSO4(s) + 5H2O(g)
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संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Iron pipes coated with zinc do not get rusted easily.
Give one example that illustrates the following characteristics of a chemical reaction:
Change in state
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Compounds, which in their molten state allow an electric current to pass through them are called
- electrolytes
- non-electrolytes
- non-conductors
- none of these
True or false
New substances are formed in a chemical change.
Fill in the blank:
In some chemical reactions an insoluble ________ is formed when two solutions are mixed.
A solution of a substance ‘X’ is used for white washing Name the substance ‘X’ and write its formula.
When electric current is passed through acidulated water ______ of water takes place.
Complete the following table and write your observations.
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Hydrogen sulphide |
Ammonia |
Sulphur dioxide |
Hydrogen chloride |
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Shake the gas with red litmus solution |
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Shake the gas with blue litmus solution |
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Apply a burning splint to a gas |
Give a suitable example with an equation to show the representation of a chemical reaction.
The chemical formula of rust is ______.
