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प्रश्न
Give a chemical test to distinguish between the following gases.
H2 and O2
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उत्तर
| Hydrogen | Oxygen |
| Apply a burning splint to the gas: Pure hydrogen burns with a pale blue Flame when a burning splint is brought near it. | Apply a burning splint to the gas: It rekindles a glowing wooden splinter. |
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संबंधित प्रश्न
Complete and balance the following chemical equations:
N2 + O2 →
State what you would observe when the following substance is heated in a glass test tube Copper (II) carbonate Red lead .
Give an example of a reaction where the following are involved:
Solution
Explain,giving one example of the following chemical changes:
Reversible reaction
Name: Two nitrates that do not produce nitrogen dioxide on heating.
State the original colour of the following substance and colour of residue obtained after heating.
Copper carbonate
Select the correct answer for the following options:
The pale blue precipitated obtained when copper [II] sulphate reacts with sodium hydroxide.
Complete the table given below.
| Heat on Zinc nitrate | Colour of residue |
A chemical reaction is often accompanied by external indications or characteristics.
A reaction between an acid and a base is called ______.
