Question

Q. Explain the following process/ events.

1) put two to three iron nails in the wall blue solution of copper sulphate and after 15 to 20 minutes the colour of solution turns green

2) give the basic difference between weather and climate

3) the red litmus paper turns blue when it is dipped into the solution of magnesium oxide with water

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Answer 1

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☘ 1) When iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green.

☘ 2) a. WEATHER - It is what conditions of the atmosphere are over a short period of time.

☘ 2) b. CLIMATE - It is how the atmosphere "behaves" over relatively long periods of time.

☘ 3) REASON - This is because magnesium oxide with water is basic in nature.

▪︎When the red litmus paper is dipped in basic solution,it turns from red to blue.