What is the sulphuric acid obtained from ferrous sulphate (green vitriol) fumes strongly in moist air, on account of the long-continued practice of the process at Nordhausen called?

Fuming sulphuric acid

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Nordhausen sulphuric acid

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Vitroling sulphuric acid

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Both

A

and

B

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Solution

The correct option is D Both $A$ and $B$
Sulphuric acid obtained from ferrous sulphate (green vitriol) fumes strongly in moist air, is called 'fuming sulphuric acid' or 'Nordhausen sulphuric acid', on account of the long-continued practice of this process at Nordhausen.
Nordhausen is a city in Thuringia, Germany.
Both A and B are correct.

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What would you observe in the following cases?
(i) Sulphur trioxide is dissolved in water on a large scale.
(ii) Concentrated sulphuric acid is added to equal volumes of cold water.
(iii) 100 ml of 98% sulphuric acid is kept open.
(iv) Hot concentrated sulphuric acid is added to sodium chloride crystals.
(v) Dilute sulphuric acid is added to ferrous sulphate solution.

Name the following:
(a) Products obtained by dissolving sulphur dioxide and chlorine in water.
(b) The catalyst used in the contact process.
(c) Solution obtained by dissolving sulphur trioxide in 98% sulphuric acid.
(d) Products obtained by treating zinc with dilute sulphuric acid.
(e) Products obtained by treating ferrous sulphide with dilute sulphuric acid.
(f) The precipitate obtained by treating aqueous lead nitrate with dilute sulphuric acid.
(g) The precipitate obtained by treating aqueous barium chloride with dilute sulphuric acid.
(h) Gases obtained by treating carbon with hot concentrated sulphuric acid.
(i) The property used to prepare HCl and HNO₃ from H₂SO₄.

Write the balanced chemical equations for the following conversions:
(a) Lead sulphate from lead nitrate solution and dilute sulphuric acid.
(b) Copper sulphate from copper and concentrated sulphuric acid
(c) Ammonium sulphate from ammonia and dilute sulphuric acid.

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