JEE Main 2018 (Offline) | Ionic Equilibrium Question 82 | Chemistry | JEE Main - ExamSIDE.com

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JEE Main 2018 (Offline)

MCQ (Single Correct Answer)

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-1

An aqueous solution contains 0.10 M H₂S and 0.20 M HCl. If the equilibrium constants for the formation of HS^– from H₂S is 1.0 $$\times$$ 10^–7 and that of S^2- from HS^– ions is 1.2 $$\times$$ 10^–13 then the concentration of S^2- ions in aqueous solution is :

A

5 $$\times$$ 10^–19

B

5 $$\times$$ 10^–8

C

3 $$\times$$ 10^–20

D

6 $$\times$$ 10^–21

2

JEE Main 2018 (Offline)

MCQ (Single Correct Answer)

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Which of the following are Lewis acids?

A

BCl₃ and AlCl₃

B

PH₃ and BCl₃

C

AlCl₃ and SiCl₄

D

PH₃ and SiCl₄

3

JEE Main 2018 (Offline)

MCQ (Single Correct Answer)

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-1

Which of the following salts is the most basic in aqueous solution?

A

Pb(CH₃COO)₂

B

Al(CN)₃

C

CH₃COOK

D

FeCl₃

4

JEE Main 2018 (Offline)

MCQ (Single Correct Answer)

+4

-1

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

A

Base	Acid	End point
Weak	Strong	Colourless to pink

B

Base	Acid	End point
Strong	Strong	Pinkish red to yellow

C

Base	Acid	End point
Weak	Strong	Yellow to pinkish red

D

Base	Acid	End point
Strong	Strong	Pink to colourless

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