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प्रश्न
State two observations when
A few crystals of KNO3 are heated in a hard glass tube
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उत्तर
Oxygen is evolved.
2KNO3→ 2KNO2 + O2
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संबंधित प्रश्न
Write balanced chemical equations for the action of dilute sulphuric acid on sodium sulphite.
State your observations when Concentrated Sulphuric acid is added to Sugar Crystals
Distinguish between the given pairs of compounds using the test given within brackets:
Dilute sulphuric acid and dilute hydrochloric acid (using barium chloride solution)
Give reason for the following:
Ammonia gas cannot be dried by passing through concentrated sulphuric acid.
Why is sulphuric acid known as king of chemicals and oil vitriol ?
What do you observe when barium chloride solution is added to dilute sulphuric acid ?
Name the gas evolved in following case:
The gas produced by the action of concentrated sulphuric acid on sodium chloride.
Give balanced chemical equation to prepare the following salt:
Lead sulphate from lead carbonate
Identify the salts P and Q from the observation given below:
On performing the flame test salt P produces a lilac coloured flame and its solution gives a white precipitate with silver nitrate solution. Which is soluble in ammonium hydroxide solution.
Name the gas released when sodium carbonate is added to a solution of sulphur dioxide.
