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Standard XII

Chemistry

Properties and Reactions of Sodium Peroxide

Two test tube...

Question

Two test tubes containing nitrate and bromide are treated separately with conc. $H_{2} S O_{4}$ ; brown fumes evolved are passed in water. The water will be coloured by vapours evolved from the test tube containing

Nitrate

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Bromide

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Both (A) and (B)

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None of these

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Solution

The correct option is B
Bromide
The water will be coloured by vapours evolved from the test tube containing bromide.
$B r_{2} + H_{2} O \to Brown colour$
$N O_{2} + H_{2} O \to Colourless .$
$B r_{2}$ impart a brown color to the aqueous solution while $N O_{2}$ does not.

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Similar questions

Q. Two test tubes containing a nitrate and a bromide are treated separately with

H_{2} S O_{4}

; brown fumes evolved are passed in water. The water will be colored by vapors evolved from the test tube containing :

Q. A test tube containing a nitrate and another containing a bromide and

M n O_{2}

are treated with conc.

H_{2} S O_{4}

. The brown fumes evolved are passed in water. The water will be coloured by the :

F e {S O}_{4}

is used in brown ring test for nitrates and nitrites In this test, a freshly prepared

F e {S O}_{4}

solution solution is mixed with solution containing

{N O}_{2}^{-}

and

{N O}_{3}^{-}

and the conc,

H_{2} {S O}_{4}

is run down the side of the test tube. If the mixture gets hot or is shaken,

(I)

the brown colour disappear

(I I)

N O

is evolved

(I I I)

a yellow solution of

{F e}_{2} {({S O}_{4})}_{3}

A dilute solution of sodium carbonate was added to two test tubes - one containing dilute $H C l$ (A) and the other containing dilute $N a O H$ (B). The correct observation was

Q. Two zinc rods are placed in contact with dilute

H_{2} S O_{4}

and conc.

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Two test tubes containing nitrate and bromide are treated separately with conc. H2SO4; brown fumes evolved are passed in water. The water will be coloured by vapours evolved from the test tube containing

The correct option is B BromideThe water will be coloured by vapours evolved from the test tube containing bromide. Br2+H2O→Brown colour NO2+H2O→Colourless. Br2​ impart a brown color to the aqueous solution while NO2​ does not.

Two test tubes containing nitrate and bromide are treated separately with conc. $H_{2} S O_{4}$ ; brown fumes evolved are passed in water. The water will be coloured by vapours evolved from the test tube containing

The correct option is B
Bromide
The water will be coloured by vapours evolved from the test tube containing bromide.
$B r_{2} + H_{2} O \to Brown colour$
$N O_{2} + H_{2} O \to Colourless .$
$B r_{2}$ impart a brown color to the aqueous solution while $N O_{2}$ does not.