Q. Following are some precipitates obtained during qualitative analysis of inorganic salts.
Calcium oxalate, lead sulphide, lead iodide, lead sulphate, barium carbonate, barium chromate, ferric hydroxide, zinc hydroxide, cobalt sulphide
How many of the above are coloured precipitates?

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Answer: 5

Solution:


Precipitate Colour
Calcium oxalate White
Lead sulphide Black
Lead iodide Yellow
Lead sulphate White
Barium carbonate White
Barium chromate Yellow
Ferric hydroxide Brown
Zinc hydroxide White
Cobalt sulphide Black