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प्रश्न
Make crystals of different compounds (common salt, epsom salt, sugar, borax, nickel sulfate, etc.). Observe them under a magnifying glass or a microscope. Note down their colours and shapes.
कृति
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उत्तर
When crystals of different substances are prepared and observed under a magnifying glass or microscope, they show distinct colours and shapes due to their unique crystal structures.
| Compound | Colour | Shape of Crystals |
| Common salt (NaCl) | Colourless/white | Cubical crystals |
| Epsom salt (MgSO4·7H2O) | Colourless or white | Needle-like/elongated crystals |
| Sugar (sucrose) | Colourless to white | Monoclinic/irregular crystals |
| Borax (Na2B4O7·10H2O) | White | Prismatic/glassy crystals |
| Nickel sulfate (NiSO4·6H2O) | Green | Rhombic/prismatic crystals |
Different compounds form crystals with distinct shapes and colours because their particles arrange themselves in specific, orderly patterns during crystallisation.
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