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Reactivity with Halogens and Hydrogen (Group 2)

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Question

Assertion :Addition of ${N H}_{4} O H$ to an aqueous solution of $B a {C l}_{2}$ in the presence of excess ${N H}_{4} C l$ precipitates $B a {(O H)}_{2}$ . Reason: $B a {(O H)}_{2}$ is soluble in water.

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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C

Assertion is correct but Reason is incorrect

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D

Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
Addition of ${N H}_{4} O H$ to an aqueous solution of $B a {C l}_{2}$ in the presence of excess ${N H}_{4} C l$ do not precipitates $B a {(O H)}_{2}$ . Because the presence of $N H_{4} C l$ increases the formation of $B a C l_{2}$ which is aqueous.
So assertion is incorrect.
$B a (O H)_{2}$ is insoluble in water which is precipitate.
So assertion is incorrect but Reason is correct.
Hence option D is correct.

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Similar questions

Q. Assertion: Addition of

N H_{4} O H

to an aqueous solution of

B a C l_{2}

in the presence of excess

N H_{4} C l

B a (O H)_{2}

B a (O H)_{2}

is soluble in water.

Q. Assertion :Addition of

{N H}_{4} O H

to an aqueous solution of

B a {C l}_{2}

in the presence of

{N H}_{4} C l

(excess) precipitates

B a {(O H)}_{2}

B a {(O H)}_{2}

is insoluble in water.

Q. Assertion: The compressibility factor for

H_{2}

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

H e

can be derived from Van der Waal's equation.

Assertion (A) Addition reaction of water to but-1-ene in acidic medium yields butan-1-ol.
Reason (R) Addition of water in acidic medium proceeds through the formation of primary carbocation.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

CaO

formed by decomposition of

{CaCO}_{3}

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