_____________ surfactants perform well over a wide range water hardness and PH?
Correct answer: C. Nonionic
- A. Anionic
- B. Cationic
- C. Nonionic
- D. Neutral
Explanation
Nonionic surfactants do not carry charged head groups, so their performance is much less affected by Ca2+ and Mg2+ ions in hard water. They therefore work over a broad range of water hardness and pH. The likely distractor is option a, anionic surfactants, because they clean well but can form insoluble salts with hardness ions and are more pH-sensitive.
Last updated
About Properties of Liquids
Liquid behavior depends on intermolecular forces, which produce surface tension, viscosity, capillary action and a definite volume without a fixed shape. The topic also covers vapor pressure, evaporation, boiling point and the effect of temperature and external pressure, while distinguishing evaporation at the surface from boiling throughout the liquid.
Practise Liquids
350 free Liquids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
10ml of alcohol dissolve in 90ml of water unit of concentration used is________________?
A falling drop of liquid is spherical because:
A liquid crystalline state exists between two temperatures i.e melting temperature and _ temperature.
A liquid crystalline state exists between two temperatures (the melting temperature and the _ temperature).
A liquid takes the shape of its container but has a fixed volume because its molecules