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प्रश्न
Give two examples of the following :
Solid + Solid mixture
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उत्तर
Solid + Solid mixture: Sand and sugar,
- Sand and stone,
- sand and sugar.
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संबंधित प्रश्न
Write true or false
Milk is an emulsion.
Give two examples of the following:
Liquid + Liquid mixture:
Give a reason why elements are tabulated in a table called the ‘Periodic table’.
Match the formulas of the following of acids with their correct names:
Acids – (a) HCI (b) HNO3 (c) H2SO4 (d) H2CO3
Names – (1) Carbonic acid (2) Sulphuric acid (3) Hydrochloric acid (4) Nitric acid
Give the symbol of the following element:
Carbon
Give the symbol of the following element:
Silicon
Write the radical of the following valency:
Sodium
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Oxide
State why the molecular formula of zinc carbonate is ZnCO3 .
Mass of one atom of oxygen is
