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प्रश्न
What do you observe? When
Water is added to the quick lime.
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उत्तर
Quick lime reacts vigorously with water to produce slaked lime, i.e. calcium hydroxide.
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संबंधित प्रश्न
Write true or false :
When iron and sulphur are heated together a grey mass is formed which is attracted by a magnet .
State what you would observe when the following substance is heated in a glass test tube red lead.
Out of sodium and sulphur which is a metal? Explain its reaction with the oxygen.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Hydrogen chloride
Explain the term reactant and product giving examples.
What do you observe? When
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______ gas causes tears in our eyes while cutting onions.
______ is not a chemical change.
______ are substances that speed up the process of a chemical change and it will not undergo any change during the course of the reaction.
Assertion (A): Cutting paper into very small pieces is an irreversible change.
Reason (R): Physical changes are always reversible.
