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Uses of Calcium Carbonate

A one litre f...

Question

A one litre flask is full of reddish brown bromine fumes. The intensity of brown colour of vapour will decrease appreciably on adding to the flask x number of species from the following
find x.
(i) Marble pieces
(ii) Animal charcoal powder
(iii) $C C l_{4}$
(iv) $C S_{2}$
(v) Water

A

(3)

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B

(2)

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C

(1)

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D

(4)

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Solution

The correct option is A (3)
Marble $(C a C O_{3})$ do not react, absorb or dissolve $B r_{2}$ . As such there is no change in colour of $B r_{2}$ . Remaining dissolves or absorb bromine, $B r_{2}$ dissolve partially in water.

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