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प्रश्न
Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.
(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)
A colourless solution of calcium hydroxide in a test tube turns ______ on blowing in it through a blow tube for some time.
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उत्तर
A colourless solution of calcium hydroxide in a test tube turns milky on blowing in it through a blow tube for some time.
संबंधित प्रश्न
The chemical name of baking soda is ______.
Complete and balance the following chemical equation:
\[\ce{Pb(NO3)2 ->[Heat]}\]
Define electrolysis.
Write true or false :
When iron and sulphur are heated together a grey mass is formed which is attracted by a magnet .
Name the type of chemical reaction shown by the following equation:
Fe + CuSO4 → FeSO4 + Cu
What do you observe? When
Water is added to the quick lime.
Give an example of the following chemical changes.
A reaction where colour change is noticed.
State whether the following reaction is oxidation or reduction.
\[\ce{Na->Na+}\]
________ is a chemical substance which alters the speed of a chemical reaction.
Iron and rust are the same substances.
