JEE Main 2020 (Online) 3rd September Evening Slot | Ionic Equilibrium Question 60 | Chemistry

100 mL of 0.1 M HCl is taken in a beaker and to it 100 mL of 0.1 M NaOH is added in steps of 2 mL and the pH is continuously measured. Which of the following graphs correctly depicts the change in pH?

JEE Main 2020 (Online) 3rd September Evening Slot Chemistry - Ionic Equilibrium Question 60 English Option 1

JEE Main 2020 (Online) 3rd September Evening Slot Chemistry - Ionic Equilibrium Question 60 English Option 2

JEE Main 2020 (Online) 3rd September Evening Slot Chemistry - Ionic Equilibrium Question 60 English Option 3

JEE Main 2020 (Online) 3rd September Evening Slot Chemistry - Ionic Equilibrium Question 60 English Option 4

JEE Main 2020 (Online) 3rd September Morning Slot

MCQ (Single Correct Answer)

-1

An acidic buffer is obtained on mixing :

100 mL of 0.1 M HCl and 200 mL of 0.1 M CH₃COONa

100 mL of 0.1 M HCl and 200 mL of 0.1 M NaCl

100 mL of 0.1 M CH₃COOH and 100 mL of 0.1 M NaOH

100 mL of 0.1 M CH₃COOH and 200 mL of 0.1 M NaOH

JEE Main 2020 (Online) 2nd September Morning Slot

MCQ (Single Correct Answer)

-1

For the following Assertion and Reason, the correct option is

Assertion (A): When Cu (II) and sulphide ions are mixed, they react together extremely quickly to give a solid.

Reason (R): The equilibrium constant of
Cu²⁺(aq) + S^2–(aq) ⇌ CuS(s) is high because the solubility product is low.

(A) is false and (R) is true.

Both (A) and (R) are true but (R) is not the explanation for (A).

Both (A) and (R) are true and (R) is the explanation for (A).

Both (A) and (R) are false.

JEE Main 2020 (Online) 9th January Evening Slot

MCQ (Single Correct Answer)

-1

The solubility product of Cr(OH)₃ at 298 K is 6.0 × 10^–31. The concentration of hydroxide ions in a saturated solution of Cr(OH)₃ will be :

(2.22 × 10^–31)^1/4

(4.86 × 10^–29)^1/4

(18 × 10^–31)^1/4

(18 × 10^–31)^1/2