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Occurence of Sulphuric Acid

Name the foll...

Question

Name the following:
(a) a green coloured carbonate.
(b) a steel grey coloured solid non-metal.
(c) a nitrate which has no water of crystallization.
(d) a sulphate insoluble in water.

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Solution

Disclaimer: There are more than one compounds with the given description. Any one of the following compounds can be used to answer this question.

(a) Nickel carbonate, Copper carbonate
(b) Iodine
(c) Ammonium nitrate, lithium nitrate, sodium nitrate, potassium nitrate etc.
(d) Barium sulphate, lead sulphate, silver sulphate, mercury sulphate etc.

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(e) a metal that becomes black in the presence of hydrogen sulphide
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Q. You have 3 metals and salt solutions of these metals. Test
tube Solution

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HINT: (Magnesium sulphate -white colour, copper sulphate -blue colour, Ferrous sulphate- green colour )
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Observation by	Metal	Solution	Colour change of solution	Deposit/Residue obtained
A	Fe	ZnSO₄	turned green	silvery grey coating
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D	Fe	ZnSO₄	no change	grey residue
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The correct reporting has been made observations reported by the student :
(1) A
(2) B
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