chemistry : class12 Definition of Macromolecular Colloids : Macromolecular colloids : Surface Chemistry MCQ Questions and Answers
Practice important
Definition of Macromolecular Colloids
MCQ questions and answers.
Page 1
of
1
|
10
MCQ Questions
1. What are macromolecular colloids?
A.
Colloids in which particles are formed by the aggregation of small molecules
B.
Colloids in which each particle is a single large molecule
C.
Colloids containing only inorganic salts
D.
Colloids made exclusively of gases
Correct Answer:
Colloids in which each particle is a single large molecule
Explanation:
Macromolecular colloids consist of particles that are individual large molecules having colloidal dimensions.
2. Which type of substance forms a macromolecular colloid when dispersed in a suitable solvent?
A.
A substance consisting of very large molecules
B.
A substance consisting only of ions
C.
A substance containing only small atoms
D.
A substance that cannot dissolve in any solvent
Correct Answer:
A substance consisting of very large molecules
Explanation:
Macromolecular colloids are formed by substances whose individual molecules are sufficiently large to behave as colloidal particles.
3. In a macromolecular colloid, a colloidal particle is best described as:
A.
A cluster of solvent molecules only
B.
A single macromolecule
C.
A single atom
D.
A precipitated crystal only
Correct Answer:
A single macromolecule
Explanation:
The defining feature of a macromolecular colloid is that each dispersed colloidal particle is one large macromolecule.
4. Which of the following is an example of a macromolecular colloid?
A.
Starch dissolved or dispersed in water
B.
Sodium chloride solution
C.
Copper sulfate solution
D.
Sugar solution containing small sugar molecules
Correct Answer:
Starch dissolved or dispersed in water
Explanation:
Starch contains very large molecules, so its dispersion in water is classified as a macromolecular colloid.
5. The term 'macromolecular' in macromolecular colloids refers to:
A.
Molecules with very large molecular masses
B.
Molecules with very low molecular masses
C.
Molecules made only of metals
D.
Molecules that always exist as gases
Correct Answer:
Molecules with very large molecular masses
Explanation:
Macromolecules are extremely large molecules with high molecular masses, and they form the particles of macromolecular colloids.
6. Which statement correctly defines a macromolecular colloid?
A.
It contains large molecules dispersed as individual colloidal particles in a medium
B.
It contains only true ions dispersed in a solvent
C.
It contains visible solid particles that settle immediately
D.
It contains only molecules smaller than those in a true solution
Correct Answer:
It contains large molecules dispersed as individual colloidal particles in a medium
Explanation:
A macromolecular colloid is a dispersion in which large individual molecules act as the colloidal particles.
7. Proteins dispersed in water are generally classified as:
A.
Macromolecular colloids
B.
Simple molecular solutions
C.
Coarse suspensions only
D.
Atomic dispersions
Correct Answer:
Macromolecular colloids
Explanation:
Proteins are very large molecules, so their dispersions in water are examples of macromolecular colloids.
8. What is the main difference between a macromolecular colloid and an ordinary molecular solution?
A.
The particles of a macromolecular colloid are much larger molecules
B.
A macromolecular colloid contains no solvent
C.
An ordinary molecular solution contains only solids
D.
A macromolecular colloid contains only gaseous particles
Correct Answer:
The particles of a macromolecular colloid are much larger molecules
Explanation:
Macromolecular colloids contain individual molecules of very high size and mass, unlike the small molecules present in ordinary molecular solutions.
9. Which substance can act as the dispersed phase in a macromolecular colloid?
A.
A polymer with very large molecules
B.
A single proton
C.
A small inorganic ion
D.
A molecule of hydrogen gas only
Correct Answer:
A polymer with very large molecules
Explanation:
Polymers have very large molecular structures, and their individual molecules can serve as particles in macromolecular colloids.
10. Macromolecular colloids are called so because their colloidal particles are:
A.
Aggregates of several small ions only
B.
Individual molecules of macromolecular size
C.
Visible grains of sand
D.
Molecules of extremely small size
Correct Answer:
Individual molecules of macromolecular size
Explanation:
The name indicates that the colloidal particles themselves are individual macromolecules of large size.
Short Questions and Answers
Practice short questions and answers related to
Definition of Macromolecular Colloids
.
Short questions are currently unavailable for this page.