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Question

List out some uses of nitrogen. (2 marks)

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Solution

The uses of nitrogen gas are as follows:
  • It is used as food preservative in packed foods. (0.5 mark)
  • It is used in the production of fertilisers. (0.5 mark)
  • Nitrogen is also used to fill in the tyres of vehicles. (0.5 mark)
  • Liquified nitrogen is used as refrigerant. (0.5 mark)

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