Intext Question Answers of Metals and Non Metals |Chapter 3 Class 10 Science

Intext Question Answers of Metals and NOn Metals | Chapter 3 | Class 10 | Science

1. Why is sodium kept immersed in kerosene oil?

2. Write equations for the reactions of
(i) iron with steam
(ii) calcium and potassium with water

3. Samples of four metals A, B, C and D were taken and added to the
following solution one by one. The results obtained have been tabulated
as follows.
Use the Table above to answer the following questions about metals
A, B, C and D.
(i) Which is the most reactive metal?
(ii) What would you observe if B is added to a solution of Copper(II)
sulphate?
(iii) Arrange the metals A, B, C and D in the order of decreasing
reactivity.

4. Which gas is produced when dilute hydrochloric acid is added to a
reactive metal? Write the chemical reaction when iron reacts with dilute
H2SO4.

5. What would you observe when zinc is added to a solution of iron(II)
sulphate? Write the chemical reaction that takes place.

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