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प्रश्न
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – two coloured gases (with their colours)
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उत्तर
(i) Chlorine – greenish-yellow
(ii) Nitrogen dioxide – reddish brown.
संबंधित प्रश्न
Give two examples for the following: Metals
State the number of atoms of H2SO4
Indicate whether the following statement is true or false:
Elements are made up of compounds
Indicate whether the following statement is true or false:
Molecules can exist independently.
Tick (√) the correct alternative from the choice given for the following statement.
All pure substances have
Who are my companions?
| Group 'A' | Group 'B' |
| 1. Stainless steel | (a) Non-metal |
| 2. Silver | (b) compound |
| 3. Bhajani mixture for milling | (c) Mixture |
| 4. Salt | (d) Element |
| 5. Coal | (e) Alloy |
| 6. Hydrogen | (f) Metal |
Explain the difference between Metals and non-metals.
Classify the following as metals, non-metals and metalloids.
Sodium, Bismuth, Silver, Nitrogen, Silicon, Carbon, Chlorine, Iron, Copper
Name the constituents of water.
Give the chemical formula for cane sugar.
