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प्रश्न
What is a chemical equation?
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उत्तर
A chemical equation is a short hand representation of a chemical reaction with the help of chemical symbols and formulas.
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संबंधित प्रश्न
Write any two observations in an activity which may suggest that a chemical reaction has taken place. Give an example in support of your answer.
Balance the following equation:
HNO3 + H2S → NO2 + H2O + S
Balance the following equation:
Zn + HNO3 `→` Zn(NO3)2 + H2O + NO2
Write the balanced chemical equation of the following reaction.
sulphur + nitric acid→ sulphuric acid + nitrogen dioxide + water.
How is a flame test performed?
In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.
2H2 + O2 → 2H2O
Balance the following simple equation:
Mg + CO2 → MgO + C
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
CaC2 + N2 → 2CaCN2 + C
In the chemical equation the _______ are written on the left-hand side.
Why should a magnesium ribbon be cleaned before burning in air?
