RRB Group D (Level-1 posts) 2022 · Question 404 of 598

Match the following: Substance pH i. Lemon juice a. 14 ii. Gastric juice b. 1.2 iii. Milk of magnesia c. 2.2 iv. Sodium hydroxide solution d. 10

Ai - c, ii - b, iii - d, iv - aCorrect
Bi - d, ii - b, iii - c, iv - a
Ci - c, ii - b, iii - a, iv - d
Di - a, ii - b, iii - c, iv - d

Answer: A. i - c, ii - b, iii - d, iv - a

Explanation

Lemon juice has a pH of 2.2, gastric juice is very acidic with a pH of 1.2, milk of magnesia has a pH of 10, sodium hydroxide solution is very basic with a pH of 14. Thus, the correct matching is i - c, ii - b, iii - d, iv - a.

Source: RRB Group D 2022 Prev. Yr. Paper (18 Aug 2022) (Shift 3) - Prepp · reliable-secondary

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