An insoluble salt prepared by synthesis is

FeCl₃

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FeS

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NaCl

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CaCl₂

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Solution

The correct option is B
FeS

Synthesis reactions- In a synthesis reaction, two atoms or molecule interact to form a different molecule.
Explanation for correct option b): FeS is synthesized by heating iron and sulphur together.
$Fe + S \to FeS$
Also, FeS is insoluble in water.
Explanation for incorrect options:
FeCl₃, NaCl, and CaCl_{2 are} soluble in water.
Hence, the correct option is (B) FeS

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Similar questions

Salts are prepared by the following methods

(a) Direct combination

(b) Displacement

(d) Neutralisation of insoluble base

(e) Neutralisation of an alkali (titration)

For each of the salt: A, B, C and D, suggest a suitable method for its preparation.

(a) A is a sodium salt.

(b) B is an insoluble salt.

(d) D is a soluble salt of zinc.

Write the balanced equations for the preparation of the following salts in the laboratory :

(a) A soluble sulphate by the action of an acid on an insoluble base,

(b) An insoluble salt by the action of an acid on another salt,

(d) A soluble sulphate by the action of an acid on a metal.

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