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प्रश्न
How will you obtain Ammonia from nitrogen.
Also give balanced equations for the reactions
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उत्तर
Nitrogen when reacts with hydrogen at 450°C and under 200 atm, ammonia is formed.
\[\ce{N2 + 3H2 ⇌[450°C][200 atm] 2 NH3}\]
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संबंधित प्रश्न
Give scientific reasons.
While preparing dil. Sulphuric acid from concentrated conc. sulphuric acid in the laboratory the concentrated sulphuric acid is, add slowly to water with constant stirring.
Why energy is involved in a chemical change?
Name a carbonate which do not decompose on heating.
Give an example of the following chemical changes.
An exothermic and an endothermic reaction involving carbon as one of the reactants.
State the following reaction whether heat is evolved or absorbed –
water is added to quicklime
True or False. If false, give the correct answer.
Tarnishing of silver is an example of endothermic change.
Match the following:
| Colum I | Column II | ||
| 1. | Alloying | a. | Exothermic change |
| 2. | Crystallization | b. | Periodic change |
| 3. | Soap powder + water | c. | Mixing of molten solids |
| 4. | Seasonal changes | d. | Pure solid |
Give examples for the exothermic process.
Give scientific reasons.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
Give scientific reason.
While preparing dilute sulphuric acid from concentrated sulphuric acid in the laboratory, the concentrated sulphuric acid is added slowly to water with constant stirring.
