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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 a balanced chemical equation for the following:
Action of concentrated sulphuric acid on Sulphur.
State the inference drawn from the following observations:
Salt S is prepared by reacting dilute sulphuric acid with copper oxide. Identify S.
What would you observe in the following case?
Hot concentrated sulphuric acid is added to sodium chloride crystals.
How are the following conversion brought about? Give equation and condition:
Dilute sulphuric acid to hydrogen.
Choose the current answer from the options given below :
The catalyst used for the oxidation of SO2 to SO3 in contact process is
What would you see, when a crystal of CuSO4.5H2O is placed in concentrated sulphuric acid? Give reason to explain your observation.
Write the equation for the laboratory preparation of the following salts, using sulphuric acid.
Iron (II) sulphate from iron.
Write the balanced chemical equation for the following conversion:
Lead sulphate from lead nitrate solution and dilute sulphuric acid.
Write the observation for the following:
Decomposition of bicarbonates by dil. H2SO4.
\[\ce{2NaHCO3 + H2SO4 -> Na2SO4 + 2H2O + 2CO2}\]
State your observation of the following case:
When dilute hydrochloric acid is added to sodium carbonate crystals.
