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प्रश्न
Mention the various conditions required for a chemical reaction to occur.
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उत्तर
The conditions required for a chemical reaction to take place:
- Physical contact
- Solution of reactants
- Electricity
- Heat
- Light
- Catalyst
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संबंधित प्रश्न
Give one example that illustrates the following characteristics of a chemical reaction:
Change in state
How do the following help in bringing about a chemical change?
light.
Complete and balance the following chemical equations:
Zn + `"H"_2"SO"_4` `→`
(dil)
Write the missing reactants and products and balance the equations.
NaOH + ............... `→` NaCI + ...................
FILL IN THE BLANK
In a ............ change, new substances are formed.
Write true or false :
Hydrogen sulphide has rotten egg smell .
Give an example of a reaction where the following are involved
Catalyst
What do you understand by 'chemical reaction'?
Complete the table given below.
| Addition of dil. H2SO4 to zinc | Test for gas evolved |
______ gas causes tears in our eyes while cutting onions.
