JEE Main 2021 (Online) 18th March Morning Shift | Ionic Equilibrium Question 48 | Chemistry

Given below are two statements : One is labelled as Assertion A and the other labelled as reason R

Assertion A : During the boiling of water having temporary hardness, Mg(HCO₃)₂ is converted to MgCO₃.

Reason R : The solubility product of Mg(OH)₂ is greater than that of MgCO₃.

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

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

A is true but R is false

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

A is false but R is true

JEE Main 2021 (Online) 17th March Morning Shift

MCQ (Single Correct Answer)

-1

Which of the following compound CANNOT act as a Lewis base?

SF₄

NF₃

ClF₃

PCl₅

JEE Main 2021 (Online) 25th February Evening Shift

MCQ (Single Correct Answer)

-1

The solubility of Ca(OH)₂ in water is :

[Given : The solubility product of Ca(OH)₂ in water = 5.5 $$\times$$ 10^$$-$$6]

1.11 $$\times$$ 10^$$-$$6

1.11 $$\times$$ 10^$$-$$2

1.77 $$\times$$ 10^$$-$$6

1.77 $$\times$$ 10^$$-$$2

JEE Main 2021 (Online) 25th February Morning Shift

MCQ (Single Correct Answer)

-1

The solubility of AgCN in a buffer solution of pH = 3 is x. The value of x is : [Assume : No cyano complex is formed; K_sp(AgCN) = 2.2 $$\times$$ 10^$$-$$16 and K_a(HCN) = 6.2 $$\times$$ 10^$$-$$10]

1.9 $$\times$$ 10^$$-$$5

1.6 $$\times$$ 10^$$-$$6

2.2 $$\times$$ 10^$$-$$16

0.625 $$\times$$ 10^$$-$$6

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