Match List I with List II. List-I (Anion) List-II (gas evolved on reaction with dil. H 2 SO 4 ) (A) CO 3 2 - (I) Colourless gas which turns lead acetate paper black. (B) S 2 - (II) Colourless gas which turns acidified potassium dichromate solution green. (C) SO 3 2 - (III) Brown fumes which turns acidified KI solution containing starch blue. (D) NO 2 - (IV) Colourless gas evolved with brisk effervescence, which turns lime water milky. Choose the correct answer from the options given below

A - IV , B - I , C - II , D - III

A - III , B - I , C - II , D - IV

A - II , B - I , C - IV , D - III

A - IV , B - I , C - III , D - II

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A $0 .1 N$ solution of ${Na}_{2} {CO}_{3}$ is titrated with $0 .1 N$ $HCl$ solution. The best indicator to be used is

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Important Questions on Transfer

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Chemistry>Change>Transfer>Titration

The reagent(s) that can selectively precipitate

S^{2 -}

from a mixture of

S^{2 -}

and

S O_{4}^{2 -}

in aqueous solution is (are)

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Chemistry>Change>Transfer>Titration

Incorrect statement for the use of indicator in acid-base titration is:

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Chemistry>Change>Transfer>Titration

100 mL

0.1 M HCl

is taken in a beaker and to it

100 mL

0.1 M NaOH

of is added in steps of

2 mL

and the

pH

is continuously measured. Which of the following graphs correctly depicts the change in

pH

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Chemistry>Change>Transfer>Titration

On heating, lead (ll) nitrate gives a brown gas (A). The gas (A) on cooling changes to a colourless solid/liquid (B). (B) on heating with NO changes to ablue solid (C). The oxidation number of nitrogen in solid (C) is:

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Chemistry>Change>Transfer>Titration

Given below are two statements:
Statement I : In the titration between strong acid and weak base methyl orange is suitable as an indicator.
Statement II : For titration of acetic acid with $\mathrm{NaOH}$ phenolphthalein is not a suitable indicator.
In the light of the above statements, choose the most appropriate answer from the options given below:

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Chemistry>Change>Transfer>Titration

{HgCl}_{2}

and

I_{2}

both when dissolved in water containing

I^{-}

ions the pair of species formed is:

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Chemistry>Change>Transfer>Titration

In an acid-base titration,

0.1 M H C l

solution was added to the

N a O H

solution of unknown strength. Which of the following correctly shown the change of

p H

of the titration mixture in this experiment?
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Chemistry>Change>Transfer>Titration

In the detection of II group acid radical, the salt containing chloride is treated with concentrated sulphuric acid, the colourless gas is liberated. The name of the gas is

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Chemistry>Change>Transfer>Titration

In base vs. Acid titration, at the end point methyl orange is present as

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Chemistry>Change>Transfer>Titration

A compound '

X

' is a weak acid and it exhibits colour change at

pH

close to the equivalence point during neutralization of

NaOH

with

{CH}_{3} COOH

. Compound '

X

' exists in ionized form in basic medium. The compound '

X

' is

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Chemistry>Change>Transfer>Titration

Reaction of an inorganic sulphite

X

with dilute

H_{2} {SO}_{4}

generated compound

Y

. Reaction of

Y

with

NaOH

gives

X

. Further, the reaction of

X

with

Y

and water affords compound

Z, Y

and

X

, respectively, are :

HARD

Chemistry>Change>Transfer>Titration

In a complexometric titration of metal ion with ligand

M (M e t a l i o n) + L (L i g a n d) \to C (C o m p l e x)

end point is estimated spectrophotometrically (through light absorption). If 'M' and 'C' do not absorb light and only 'L' absorbs then the titration plot between absorbed light

(A)

versus volume of ligand 'L'

(V)

would look like:

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Chemistry>Change>Transfer>Titration

Sodium nitroprusside, when added to an alkaline solution of sulphide ions, produce a

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Chemistry>Change>Transfer>Titration

The sodium salt of an organic acid

X

produces effervescence with concentrated

H_{2} {SO}_{4}

X

reacts with the acidified aqueous

{CaCl}_{2}

solution to give a white precipitate which decolourises acidic solution of

{KMnO}_{4}

X

HARD

Chemistry>Change>Transfer>Titration

When a mixture of

NaCl, K_{2} {Cr}_{2} O_{7}

and concentrated

H_{2} {SO}_{4}

is heated in a dry test tube, a red vapour

(X)

is evolved. This vapour

(X)

turns an aqueous solution of

NaOH

yellow due to the formation of

Y . X

and

Y,

respectively, are:

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Chemistry>Change>Transfer>Titration

A white precipitate was formed when

{BaCl}_{2}

was added to water extract of an inorganic salt. Further, a gas

' X'

with characteristic odour was released when the formed white precipitate was dissolved in dilute HCI. The anion present in the inorganic salt is:

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Chemistry>Change>Transfer>Titration

Match List I with List II.

	List-I (Anion)		List-II (gas evolved on reaction with dil. $H_{2} {SO}_{4}$ )
(A)	${CO}_{3}^{2 -}$	(I)	Colourless gas which turns lead acetate paper black.
(B)	$S^{2 -}$	(II)	Colourless gas which turns acidified potassium dichromate solution green.
(C)	${SO}_{3}^{2 -}$	(III)	Brown fumes which turns acidified KI solution containing starch blue.
(D)	${NO}_{2}^{-}$	(IV)	Colourless gas evolved with brisk effervescence, which turns lime water milky.

Choose the correct answer from the options given below

HARD

Chemistry>Change>Transfer>Titration

The Plot of

pH

-metric titration of weak base

{NH}_{4} OH

vs strong acid

HCl

looks like

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Chemistry>Change>Transfer>Titration

An alkali is titrated against acid with methyl orange as an indicator, which of the following is a correct combination?

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Chemistry>Change>Transfer>Titration

50 mL

0 .5 M

oxalic acid is needed to neutralize

25 mL

of sodium hydroxide solution. What is the amount of

NaOH

50 mL

of the given sodium hydroxide solution?

A 0.1 N solution of Na2CO3 is titrated with 0.1 N HCl solution. The best indicator to be used is

Important Questions on Transfer

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A $0 .1 N$ solution of ${Na}_{2} {CO}_{3}$ is titrated with $0 .1 N$ $HCl$ solution. The best indicator to be used is