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प्रश्न
Select elements and compounds from the following list: Iron, plaster of paris, chalk, common salt, copper, aluminium, calcium oxide, cane sugar, carbon, silica, sodium sulphate, uranium, potassium carbonate, silver, carbon dioxide.
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उत्तर
| Elements | Compounds |
| Iron | Plaster of paris |
| Copper | Chalk |
| Aluminium | Common salt |
| Carbon | Calcium oxide |
| Uranium | Cane sugar |
| Silver | Silica |
| Sodium sulphate | |
| Potassium carbonate | |
| Carbon dioxide |
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संबंधित प्रश्न
Write true or false
Milk is an emulsion.
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Chloride
Match the symbols of – radicals – with their correct combining power or capacity, (valency).
(a) OH
(b) So4
(c) No3
(d) Co3
Combining power or capacity – A : 3; B : 2; C : 1. (negative valencies)
Give the symbol of the following element:
Mercury
State the type of element for the following:
Boron
Give the symbol of the following element:
Carbonate
State the valency of the following metallic element and write symbol with the valency
Calcium
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).
Aluminate
Fill in the blank with the correct word from the options given below:
A symbol represents a short form of a / an ________.
Symbol of mercury is
