X, Y and Z are three crystalline solids which are soluble in water and have a common anion.

The action of heat on Y produces a reddish brown gas and a yellow residue which fuses with the glass of the test tube A reddish-brown gas is obtained when Y is warmed with concentrated sulphuric acid and copper turnings added to mixture.

Action of heat on Y.

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Solution

The correct option is D

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X, Y and Z are three crystalline solids which are soluble in water and have a common anion.

To help you to identify X, Y and Z, you are provided with the following experimental observations. Copy and complete the corresponding inferences in (a) to (e).

(a) A reddish-brown gas is obtained when X, Y and Z are separately warmed with concentrated sulphuric acid and copper turning added to the mixture.

INFERENCE 1 : The common anion is the .................. ion.

(b) When X is heated, it melts and gives off only one gas which re-lights a glowing splint.

INFERENCE 2 : The cation in X is either ................ or ....................

(c) The action of heat on Y produces a reddish-brown gas and a yellow residue which fuses with the glass of the test tube.

INFERENCE 3 : The metal ion present in Y is the .................... ion.

(d) When Z is heated, it leaves no residue. Warming Z with sodium hydroxide solution liberates a gas which turns moist red litmus paper blue.

INFERENCE 4 : Z contans the ............ cation.

(e) Write the equations for the following reactions:

(1) X and concentrated sulphuric acid (below $200^{\circ}$ ). (One equation only for either of the cations given in INFERENCE 2).

(2) Action of heat on Y.

(3) Concentrated nitric acid is added to copper turnings kept in a beaker.

X, Y and Z are three crystalline solids which are soluble in water and have a common anion. To help you to identify X, Y and Z, you are provided with the following experimental observations.

A reddish-brown gas is obtained when X, Y and Z are separately warmed with concentrated sulphuric acid and copper turnings added to mixture.

INFERENCE : The common anion is the..........ion.

X, Y and Z are three crystalline solids which are soluble in water and have a common anion.

To help you to identify X, Y and Z, you are provided with the following experimental observation.

The action of heat on Y produces a reddish brown gas and a yellow residue which fuses with the glass of the test tube.

INFERENCE: The metal ion present in Y is the________Ion.

Q. Identify the anion present in the following compounds:
Compound

X

on heating with copper turnings and concentrated sulphuric acid liberates a reddish brown gas.

Q. A compound which releases a reddish brown gas on reaction with concentrated sulphuric acid & copper turnings?

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