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प्रश्न
Give an example of the following chemical changes.
A reaction involving
(i) Change of state
(ii) formation of precipitate
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उत्तर
(i) Change of state
Ammonia gas reacts with HCl gas to give solid ammonium chloride.
NH3(g) + HCl(g) ⇋ NH4Cl(s)
(ii) Formation of precipitate
When a solution of silver nitrate is added to a solution of sodium chloride, a white insoluble substance, silver chloride, is formed.
AgNO3(aq) + NaCl(aq) → AgCl(aq) + NaNO3(aq)
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संबंधित प्रश्न
Give one example that illustrates the following characteristics of a chemical reaction:
Change in state
Fill in the blank:
The substances which undergo chemical change are called _______
Write true or false.
A chemical equation gives only qualitative information of a chemical reaction.
Copper carbonate when heated, it turns :
Give a chemical test to distinguish between the following gases.
NH3 and SO2
Distinguish by dilute sulphuric acid.
Sodium Sulphite and sodium carbonate?
Give balanced equation for the following conversion affected by heat alone on the substance:
Zinc nitrate to nitrogen dioxide
Give a suitable example with an equation to show the representation of a chemical reaction.
A chemical reaction is often accompanied by external indications or characteristics.
______ gas causes tears in our eyes while cutting onions.
