Question

The class teacher divides the class into two groups

and asks them to perform the following activities.

Group-I: Mix and crush iron fillings and sulphur

powder.

Group-II: Mix and crush iron fillings and sulphur

powder and heat the mixture strongly till red hot.

(i) Name the material obtained by group I and

write its one characteristic. [1]

(ii) What happens when dilute sulphuric

acid is added to the material obtained

by group II? [1]

(iii) Name the gas obtained on adding dilute

hydrochloric acid to the material obtained by

group I and write its one characteristic. [1]​

Answer 1

Name the gas obtained on adding dilute