Question

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Answer 1

Answer:

1. when iron is immersed in a blue coloured copper sulphate sulphate solution the iron displaces copper from the copper sulphate solution because iron is more reactive than copper . Therefore the blue coloured copper solution turns to pale green
2. weather refers to short-term changes in the atmosphere.Whereas, climate describes what the weather is like over a long period of time in a specific area
3. Magnesium oxide changes red litmus paper to blue . Thus magnesium oxide is basic in nature

Explanation:

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