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प्रश्न
What is a chemical reaction?
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उत्तर
A chemical reaction is the process of breaking the chemical bonds of the reacting substances (reactants) and making new bonds to form new substances (products).
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संबंधित प्रश्न
Name the type of chemical reaction shown by the following equation:
Fe + CuSO4 → FeSO4 + Cu
Give reason for the following:
Colourless concentrated sulphuric acid in a test tube changes to blue on adding a small piece of copper to it.
Name: Gas with rotten egg smell.
Give a word equation for the following reaction.
An exothermic reaction where both the reactants are gases, one of which is oxygen.
Complete the table given below.
| Heat on Zinc nitrate | Colour of residue |
Select the correct answer from the options given below:
State the gaseous product formed, when
An active metal reacts with dilute sulphuric acid.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Lead nitrate.
Mention the various conditions required for a chemical reaction to occur.
The percentage composition of Nitrogen in Ureas is ______.
Write the chemical reaction of baking soda with lemon.
