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प्रश्न
Define a photochemical reaction.
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उत्तर
A chemical reaction that occurs in the presence of light is called a photochemical reaction.
संबंधित प्रश्न
Give reason .
A person suffering from acidity is advised to take an antacid.
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer
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- hydrogen
- none of these
Differentiate between in Chemical reaction and chemical equation.
Write true or false :
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Explain by writing a word equation.
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Multiple choice:
Thermal decomposition of sodium carbonate will produce
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