KBr + MnO 2 + H 2 SO 4 conc . → K 2 SO 4 + MnSO 4 + H 2 O + X (unbalanced equation)

X is liberated when a mixture of KBr · K 2 Cr 2 O 7 and conc. H 2 SO 4 is heated

X with AgNO 3 solution gives a pale yellow ppt which is completely soluble in excess ammonium hydroxide

KBr + MnO 2 + H 2 SO 4 conc . → K 2 SO 4 + MnSO 4 + H 2 O + X (unbalanced equation)

X is liberated when a mixture of KBr · K 2 Cr 2 O 7 and conc. H 2 SO 4 is heated

E M B I B E

Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 16

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$KBr + {MnO}_{2} + H_{2} {SO}_{4} (conc .) \to K_{2} {SO}_{4} + {MnSO}_{4} + H_{2} O + [X]$ (unbalanced equation)

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Important Questions on Qualitative Analysis

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 17

Of the following oxides, all are soluble in

NaOH (aq)

except

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 18

Reddish-brown gas is obtained when the following are treated with conc.

H_{2} {SO}_{4} ?

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 19

A test tube containing a nitrate, and another containing a bromide and

{MnO}_{2}

, are treated with concentrated

H_{2} {SO}_{4}

. The reddish brown fumes evolved are passed through water. The water will be coloured by:

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 20

Which one among the following pairs of ions cannot be separated by

H_{2} S

in dilute hydrochloric acid?

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 21

The yellow ammonium sulphide solution is a suitable reagent used for the separation of

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 22

What product is formed by mixing the solution of

K_{4} [Fe (CN)_{6}]

with the solution of

{FeCl}_{3}

?

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 23

Which of the following will not give a positive chromyl chloride test?

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Beta Question Bank for Engineering: Chemistry>Chapter 22 - Qualitative Analysis>EXERCISE-2>Q 24

When Cl₂ water is added to an aqueous solution of potassium halide in presence of chloroform, a violet color is obtained. On adding more Cl₂ the violet color disappears and a colourless solution is obtained. This test confirms the presence of the following in aqueous solution.