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MCQ on Principles of titrimetric analysis: Page-3

Calculate the suitable pH range for the following to use it as an indicator
chemical with pka as 6.2

(A) 4.8-5.8

(B) 5.8-6.8

(C) 4.2-8.2

(D) 5.2-7.2

Which of the following is an error of method

(A) Impurities in mobile phase

(B) Background absorption in AAS

(C) Absorption of moisture

(D) Impurities in standard

The pKa of moderately strong acids like carboxylic acids fall in the region of

(A) <1

(B) >15

(C) 1-5

(D) 5-15

The theory of chemical indicators is initially proposed by

(A) Overton

(B) Ostwald

(C) Lechatlier

(D) Van deemter

The pH of 0.1 M HCl is

(A) -7

(B) 0

(C) 1

(D) 3