Question

to produce black colour iron fillings are dissolved in​

Answer 1

Answer:

Real Lab Procedure: 

Preparation of mixture using iron filings and sulphur powder:

Take about 14g of fine iron filings and 8g of sulphur powder in a big petridish or a beaker. Mix them well to prepare a mixture of iron filings and sulphur powder. Label the mixture A.

Preparation of compound using iron filings and sulphur powder:

Take about 14g of fine iron fillings and 8g sulphur powder in a china dish. Mix them well and heat the contents of the china dish, first gently, then strongly. Stir it constantly till a black mass, i.e., compound of sulphur and iron is formed. When a black mass is formed, cool it and powder the black mass. Label the compound powder as B.

To distinguish between the iron filings and sulphur powder mixture and compound on the basis of: