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प्रश्न
Give two examples of the following:
Liquid + Liquid mixture:
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उत्तर
Liquid + Liquid mixture :
- Oil in water,
- Alcohol and water.
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संबंधित प्रश्न
Which particular atom of the above element is used for this purpose ?
Out of ozone, phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively :
An atom of an element is denoted by a “symbol”. Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Hydrogen by ‘H’
Give the names and symbols of the first twenty elements of the periodic table.
Explain the terms ‘chemical formula’.
State which element exists in the highest percentage in earth’s crust.
Give the symbol of the following element:
Sulphite
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Tin
write symbol with the variable valency
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).
Plumbite
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
