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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
Define electrolysis.
Name three reducing agents ?
What do you observe when :
an iron nail is kept in tap water for few days
State four conditions necessary for a chemical reaction to take place.
A chemical reaction is often accompanied by external indications or characteristics.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Lead nitrate.
Burning of paper is a ______ change.
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
What changes do you expect?
Vanaspati is obtained from vegetable oils by the addition of ______ to the oils.
When magnesium is burnt in the air, a new substance is formed which is ______.
