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प्रश्न
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Baking Soda
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उत्तर
Sodium bicarbonate (Baking soda) — NaHCO3
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संबंधित प्रश्न
Fill in the blank
A ________ substance has only one kind of matter.
Why is filtration a better technique than sedimentation and decantation ?
Suggest a suitable technique to separate the constituents of the following mixtures. Also give the reason for selecting the particular method.
Calcium carbonate and sodium chloride
Match the ideal method of separation of components in a mixture in List I with the appropriate process in List II.
| List I | List II |
| 1. Sand from a mixture of sand and water | A: Separating funnel |
| 2. kerosene from a mixture of kerosene water | B: Sublimation |
| 3. Alcohol from a mixture of methyl alcohol and water | C: Filtration |
| 4. Naphthalene from a mixture of naphthalene and lead chloride | D: Distillation |
| 5. Pure water from impure water | E: Fractional distillation |
State any one method – to separate the following mixtures – Two solid mixtures one of which – directly changes into vapour on heating.
State any one method – to separate the following mixtures – Two solid mixtures one of which – dissolves in a – particular solvent and other does not
State any one method – to separate the following mixtures – A solid-liquid mixture containing – a soluble solids in the liquid component
State any one method – to separate the following mixtures – A liquid-gas mixture containing – a gas dissolved in a liquid component.
Explain with diagram the process used to – separate the following substance from the given mixtures - Different dyes – in their liquid constituent ink.
Name the components in each of the following mixtures.
- Ice cream
- Lemonade
- Air
- Soil
