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Question
What is observed in performing the following :
| Hydrogen | Oxygen | Carbon dioxide | Chlorine | |
| Litmus test | ||||
| Apply a burning splint to the gas | ||||
| Colour of gas | colourless | colourless | colourless | greenish-yellow |
| Odour of gas |
Fill in the Blanks
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Solution
| Hydrogen | Oxygen | Carbon dioxide | Chlorine | |
| Litmus test | Neutral | Neutral | Acidic | Acidic |
| Apply a burning splint to the gas | Pale blue flame | rekindles a glowing wooden splinter. | moist blue litmus faint red | White precipitate |
| Colour of gas | colourless | colourless | colourless | greenish-yellow |
| Odour of gas | Odourless | Odourless | Odourless | Pungent, choking |
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