1
JEE Main 2022 (Online) 25th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

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

A
1.0 $$\times$$ 10$$-$$15
B
2.7 $$\times$$ 10$$-$$12
C
3.2 $$\times$$ 10$$-$$10
D
4.2 $$\times$$ 10$$-$$8
2
JEE Main 2022 (Online) 25th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

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 :

A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is NOT the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
3
JEE Main 2021 (Online) 26th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
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 :
A
Statement I is false but Statement II is true
B
Statement I is true but Statement II is false
C
Both Statement I and Statement II are true
D
Both Statement I and Statement II are false
4
JEE Main 2021 (Online) 20th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
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 Ksp(AgCl) = 1.7 $$\times$$ 10$$-$$10 M2 and Ksp(Ag2CrO4) = 1.9 $$\times$$ 10$$-$$12 M3.

Select correct statement from the following :
A
AgCl precipitates first because its Ksp is high.
B
Ag2CrO4 precipitates first as its Ksp is low.
C
Ag2CrO4 precipitates first because the amount of Ag+ needed is low.
D
AgCl will precipitate first as the amount of Ag+ needed to precipitate is low.
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