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प्रश्न
Photosynthesis is a chemical reaction that takes place in the presence of ______.
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उत्तर
Photosynthesis is a chemical reaction that takes place in the presence of Sunlight.
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संबंधित प्रश्न
The chemical name of baking soda is ______.
Write true or false.
A chemical equation gives only qualitative information of a chemical reaction.
Explain by writing a word equation.
Respiration is a chemical change.
State the type of reactions for the following represent and balance the ones that are not balanced.
Cl2 + 2KBr → 2KCl + Br2
State the type of reactions for the following represent and balance the ones that are not balanced.
NaOH + HCl → NaCl + H2O
Give a chemical test to distinguish between the following gases.
HCl and H2S
Complete the table given below.
| Heat on copper carbonate | Test for gas evolved |
When lithium metal is placed in hydrochloric acid, _______ gas is evolved.
Which of the following is a chemical change?
Classify the following processes into physical or chemical changes:
- Beating of aluminium metal to make aluminium foil.
- Digestion of food.
- Cutting of a log of wood into pieces.
- Burning of crackers.
