JEE Main 2022 (Online) 25th June Evening Shift | Ionic Equilibrium Question 40 | Chemistry

JEE Main 2022 (Online) 25th June Evening Shift

MCQ (Single Correct Answer)

-1

The K_sp for bismuth sulphide (Bi₂S₃) is 1.08 $$\times$$ 10^$$-$$73. The solubility of Bi₂S₃ in mol L^$$-$$1 at 298 K is :

1.0 $$\times$$ 10^$$-$$15

2.7 $$\times$$ 10^$$-$$12

3.2 $$\times$$ 10^$$-$$10

4.2 $$\times$$ 10^$$-$$8

JEE Main 2022 (Online) 25th June Evening Shift

MCQ (Single Correct Answer)

-1

Given below are two statements one is labelled as Assertion A and the other is labelled as Reason R :

Assertion A : The amphoteric nature of water is explained by using Lewis acid/base concept.

Reason R : Water acts as an acid with NH₃ and as a base with H₂S.

In the light of the above statements choose the correct answer from the options given below :

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is NOT the correct explanation of A.

A is true but R is false.

A is false but R is true.

JEE Main 2021 (Online) 26th August Morning Shift

MCQ (Single Correct Answer)

-1

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 NaOH phenolphthalein is not a suitable indicator.

In the light of the above statements, choose the most appropriate answer from the options given below :

Statement I is false but Statement II is true

Statement I is true but Statement II is false

Both Statement I and Statement II are true

Both Statement I and Statement II are false

JEE Main 2021 (Online) 20th July Evening Shift

MCQ (Single Correct Answer)

-1

A solution is 0.1 M in Cl^$$-$$ and 0.001 M in CrO$$_4^{2 - }$$. Solid AgNO₃ is gradually added to it. Assuming that the addition does not change in volume and K_sp(AgCl) = 1.7 $$\times$$ 10^$$-$$10 M² and K_sp(Ag₂CrO₄) = 1.9 $$\times$$ 10^$$-$$12 M³.

Select correct statement from the following :

AgCl precipitates first because its K_sp is high.

Ag₂CrO₄ precipitates first as its K_sp is low.

Ag₂CrO₄ precipitates first because the amount of Ag⁺ needed is low.

AgCl will precipitate first as the amount of Ag⁺ needed to precipitate is low.

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