Question

Iron filings and sulphur powder were mixed together and divided into
two parts, A and B. Part A was heated strongly while part B was not
heated. Which gas will be evolved when dilute hydrochloric acid is
added to part A?
A. Hydrogen sulphide
B. Hydrogen
C. Sulphur dioxide
D. Sulphur trioxide

Answer 1

Hydrogen sulphide

B. Hydrogen

C. Sulphur dioxide

D.

Sulphur trioxide

Iron filings and sulphur powder were mixed together and divided into

two parts, A and B. Part A was heated strongly while part B was not

heated. Which gas will be evolved when dilute hydrochloric acid is

added to part A?