Chemistry 2023 JAMB Past Questions - Question 3: The lists of properties of chemical substances are as follow (i) sour taste (ii) slippery to touch (iii) yields alkali gas with ammonium salts (iv) has PH less than 7(v) turns phenolph-thalein pink. Which of the above are NOT typical properties of alkalis?

Correct Answer

D

Explanation

The properties listed are characteristics of both acids and alkalis. To identify which properties are not typical of alkalis, let's examine each property:(i) Sour taste: This is a typical property of acids, not alkalis. (ii) Slippery to touch: This is a typical property of alkalis, not acids. (iii) Yields alkali gas with ammonium salts: This is a typical property of alkalis. (iv) Has pH less than 7: This is a typical property of acids, not alkalis. (v) Turns phenolphthalein pink: This is a typical property of alkalis.Therefore, the properties that are NOT typical of alkalis are: (i) Sour taste (iv) Has pH less than 7