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Tuesday, April 19, 2022

NCERT Activity 3.8 Class 10 Science Explanation

In this post, you will find NCERT Activity 3.8 Class 10 Science Explanation that belongs to Chapter 3 Metals and Non-metals. After reading Solutions of chapter 3 Metals and Non-metals, you will be able to understand activity 3.8.

NCERT Activity 3.8 Class 10 Science Explanation


 Activity 3.8 Class 10 Science 

·      Take a magnesium ribbon and some sulphur powder.

·      Burn the magnesium ribbon. Collect the ashes formed and dissolve them in water.

·      Test the resultant solution with both red and blue litmus paper.

·      Is the product formed on burning magnesium acidic or basic?

·      Now burn sulphur powder. Place a test tube over the burning sulphur to collect the fumes produced.

·      Add some water to the above test tube and shake.

·      Is the product formed on burning sulphur acidic or basic?

·      Can you write equations for these reactions?


When a substance is burnt in the air, it reacts with the oxygen present in the air.

 Conclusion: The solution obtained on dissolving ashes after burning magnesium, turns litmus blue and on the other hand solution obtained on dissolving gases from burning sulphur (SO2, SO3) are acidic. The reaction is:


2Mg(s) + O2(g) →  2MgO(s)


MgO(s) +  H2O(l)  →  Mg(OH)2(aq)

                                 Magnesium hydroxide

S(s) + O2 (g) →  SO2 (g)


SO2(g) + H2O(I) → H2SO3(aq)

                               Sulphurous acid

Metal oxides are basic and non-metal oxides are acidic in nature. 

    Related Topics - 

1. Next activity - Activity 3.9

2. Previous activity -Activity 3.7

3. Solution of Chapter 3 Metals and Non-metals

4. MCQ Questions of Chapter 3

5. Extra Questions of Chapter 3

6. Solutions of Class 10 Science all chapters