Question

A one litre flask is full of brown bromine vapours. The intensity of brown colour of vapours will not decrease appreciably on adding to the flask some

• A. pieces of marble
• B. animal charcoal powder
• C. carbon tetrachloride
• D. ) carbon disulphide

Answer 1

Answer: (A)

pieces of marble

Answer 2

Bromine is soluble in $CCI_4 \, and \, CS_2$ Animal charcoal also adsorbs on bromine water. But marble has no action with $Br_2$. So, after adding marble piece to the flask, there will be no decrement in the intensity of brown colour.