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प्रश्न
Give a chemical test to distinguish between the following gases.
HCl and Cl2
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उत्तर
| Hydrogen chloride | Chlorine |
| Colour of gas: The gas is colourless. | Colour of gas: The gas is greenish-yellow. |
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संबंधित प्रश्न
Write the missing reactants and products and balance the equations.
................+ HCI `→` NaCI + `"H"_2"O"` + .........................
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Write a short note on the information derived from a balanced chemical equation.
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Match the pairs.
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| b. | Water | ii. | Reactant in combustion process |
| c. | Sodium chloride | iii. | Chemical change |
| d. | Dissolution of salt in water | iv. | Covalent bond |
| e. | Carbon | v. | Ionic bond |
| f. | Fluorine | vi. | Physical change |
| g. | Magnesium | vii. | Tendency to form anion |
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Assertion (A): Cutting paper into very small pieces is an irreversible change.
Reason (R): Physical changes are always reversible.
______ is the chemical name of limestone.
What is the difference between reactants and products?
