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Question
Explain why:
Helium is used for filling weather balloons.
Explain
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Solution 1
Helium is used for filling weather balloons because it is lighter than air.
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Solution 2
- Helium is light, so it helps balloons rise easily.
- It is non-combustible, meaning it does not catch fire, making it safe.
- Helium is chemically inert, so it does not react with other substances.
- It is less soluble in blood, making it safer if inhaled accidentally.
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Notes
Students can refer to the provided solutions based on their preferred marks.
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2017-2018 (March) Set 1
