JEE Main 2026 · 5 Apr · Shift 1 · Chemistry Q70

ChemistrySingle correct+4 / -1Question 70 of 75

Given below are two statements:

Statement I: Sodium dichromate and potassium dichromate are classified as primary standards in titrimetric analysis.

Statement II: Phenolphthalein is a weak base, therefore it dissociates in acidic medium.

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

Both Statement I and Statement II are ture

Both Statement I and Statement II are false

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Answer and worked solution

Official answer: B

Statement I. Potassium dichromate is a primary standard. Sodium dichromate is hygroscopic, so it cannot be one. False.

Statement II. Phenolphthalein is a weak acid. It ionises in basic medium, where it turns pink. False.

(B)

JEE Main 2026 · 5 Apr · Shift 1, Chemistry question 70