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प्रश्न
Describe your observations when potassium nitrate crystals are heated strongly in a test tube and a glowing splint is held near the mouth of test tube.
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उत्तर
The following observations are made when potassium nitrate crystals are heated strongly in a test tube and a glowing splint is held near the mouth of test tube :
- The white crystals of potassium nitrate slowly melt to form a colourless liquid.
- The glowing splint bursts into flame, showing that molten potassium nitrate gives off oxygen gas.
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Tests for Oxygen
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