Question

A mixture of iron, sand and glass contains the three in the ratio 4 :7: 9. How much and what % of iron,

sand and glass in 500g of mixture​

Answer 1

Answer:

Step-1: Separate iron filings with the help of a magnet.

Step-2: Sublimation of the remaining mixture separates ammonium chloride when solid directly converts to gaseous vapors.

Step-3: Add water to the remaining mixture, stir and filter out sand by filtration.

Step-4: The filtrate can be evaporated to get back sodium chloride.