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Potassium Dichromate

When F eCr 2 ...

Question

When $F e C r_{2} O_{4}$ is fused with Sodium Carbonate in the presence of air, we get

A

Sodium dichromate

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B

Sodium oxide

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C

Sodium chromate

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D

Mixed oxide of Sodium and Chromium

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Solution

The correct option is C Sodium chromate
$F e C r_{2} O_{4}$ from Chromite ore is fused with Sodium Carbonate in the presence of air/oxygen to give Sodium Chromate, Iron (III) Oxide and $C O_{2}$ .
$4 F e C r_{2} O_{4} + 8 N a_{2} C O_{3} + 7 O_{2} \to 8 N a_{2} C r O_{4} + 2 F e_{2} O_{3} + 8 C O_{2}$

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Similar questions

F e C r_{2} O_{4}

is fused with Sodium Carbonate in the presence of air, we get Sodium Chromate. If the filtrate from this reaction is acidified, we get:

F e C r_{2} O_{4}

is fused with Sodium Carbonate in the presence of air, we get Sodium Chromate. If the filtrate from this reaction is acidified, we get:

F e C r_{2} O_{4}

is fused with Sodium Carbonate in the presence of air, we get

Q. When Benzaldehyde is condensed with acetic anhydride is presence of fused sodium acetate we get

Identify the odd one out and justify.

(a) Chloride, nitrate, hydride, ammonium

(b) Hydrogen chloride, sodium hydroxide, calcium oxide, ammonia

(c) Acetic acid, carbonic acid, hydrochloric acid, nitric acid

(d) Ammonium chloride, sodium chloride, potassium nitrate, sodium sulphate

(e) Sodium nitrate, sodium carbonate, sodium sulphate, sodium chloride

(f) Calcium oxide, magnesium oxide, zinc oxide, sodium oxide.

(g) Crystalline blue vitriol, crystalline common salt, crystalline ferrous sulphate, crystalline sodium carbonate.

(h) Sodium chloride, potassium hydroxide, acetic acid, sodium acetate.

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