Question

Q4. Iron fillings and sulphur were mixed together and divided into two
parts,'A' and B . Part A was heated strongly and Part B was not heated.dilute sulphuric acid added to both the parts and evolution of gas was in both the cases
a)give the name of gas formed in each case ​

Answer 1

Answer:

Hydrogen sulphide in a and hydrogen in b mark me brainliest

Answer 2

Answer:

When green copper carbonate CuCO3 is heated it decomposes forming copper oxide CuO and carbon dioxide CO2.