Advertisements
Advertisements
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.
Advertisements
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 |
APPEARS IN
संबंधित प्रश्न
Write the symbols of helium, silver, krypton, antimony, barium.
What is the significance of the symbol of an element ? Explain with the help of an example.
Out of ozone, phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively :
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:
Fluorine
Give the symbol of the following element:
Calcium
State what is meant by the term ‘activity series of metals’.
Give the formula of the following gas:
Ammonia
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).
Bisulphite
Write the symbols for the following elements and classify them as solid, liquid and gas. Aluminum, Carbon, Chlorine, Mercury, Hydrogen and Helium
