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प्रश्न
How would you obtain an alkali from a base.
उत्तर १
An alkali from a base
Na2CO3 + Ca(OH)2 `Δ/`> 2NaOH + CaCO3
उत्तर २
By the action of water on soluble metallic oxide
\[\ce{\underset{Base}{Na2O}+H2O -> \underset{Alkali}{2NaOH}}\]
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संबंधित प्रश्न
Give one example in the following case:
A hydroxide which is highly soluble in water.
Give one example in the following case:
A base which is not an alkali.
Metal corrodes due to salts.
Salts are neutral.
State the term defined by the following sentence:
A soluble base.
Chemical formula of calcium oxide is _______
What are the similarities between acids and bases?
Write any four uses of bases.
Match the important chemicals given in Column (A) with the chemical formulae given in Column (B)
| Column (A) | Column (B) |
| (a) Plaster of Paris | Ca(OH)2 |
| (b) Gypsum | CaSO4. 1/2 H2O |
| (c) Bleaching Powder | CaSO4.2H7O |
| (d) Slaked Lime | CaOCl2 |
A small amount of copper oxide was taken in a beaker and dilute hydrochloric acid was added with continuous stirring of the solution. Name the compound formed and state the colour of its solution. Write the balanced chemical equation for the reaction that occurs. Based on the reaction, state the nature (acidic/basic) of copper oxide.
