Write names, formula and uses of following compounds:
(1) Haematite (2) Silver Glans (3) Luner-Caustic (4) Corrosive Sublimate

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Solution

Compound Name Formula Uses
Haemite Iron ${F e}_{2} O_{3}$ Preparation of corrosion substances, electric poles and moulding.
Silver glance Silver ${A g}_{2} S$ Preparation of ornaments, vessels and metallic articles, silver salts etc.
Lunar caustic Silver nitrate
$A g N O_{3}$ Laboratory reagent, silvering of mirrors, photography and preparation in silver halides.
Corrosive sublimate
Mercuric chloride

$H g {C l}_{2}$ (i) Dilute solution of it is employed for the sterilization of surgical instruments.
(ii) It is used in dry cells and as wood preservatives.

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Write down the names of compounds represented by the following formulae: [ 5 MARKS ]

1. Al₂(SO₄)₃

2. CaCl₂

3. K₂SO₄

4. KNO₃

5. CaCO₃

H g {C l}_{2}

(i) A l_{2} (S O_{4})_{3}

(v) C a C O_{3}

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