1. Which of the following is a synthetic macromolecular colloid?
A.
Starch
B.
Gelatin
C.
Polystyrene
D.
Gum arabic
Correct Answer:
Polystyrene
Explanation:
Polystyrene is a synthetic polymer that can form a macromolecular colloidal solution in a suitable solvent.
2. Synthetic macromolecular colloids are formed by substances that are generally
A.
Small inorganic ions
B.
Synthetic polymers of high molecular mass
C.
Simple gases
D.
Low-molecular-mass salts
Correct Answer:
Synthetic polymers of high molecular mass
Explanation:
Synthetic macromolecular colloids consist of man-made polymers having very high molecular masses.
3. Which polymer can behave as a synthetic macromolecular colloid in a suitable solvent?
A.
Polyvinyl chloride
B.
Sodium chloride
C.
Glucose
D.
Urea
Correct Answer:
Polyvinyl chloride
Explanation:
Polyvinyl chloride is a synthetic high-polymer and may form a macromolecular colloidal dispersion in an appropriate solvent.
4. Which of the following is an example of a synthetic macromolecular colloid?
A.
Nylon
B.
Albumin
C.
Cellulose
D.
Enzyme
Correct Answer:
Nylon
Explanation:
Nylon is a man-made polymer with high molecular mass and is classified among synthetic macromolecular colloids.
5. A synthetic macromolecular colloid contains particles that are
A.
Molecules of a synthetic polymer
B.
Only individual metal ions
C.
Only solvent molecules
D.
Simple atoms of a noble gas
Correct Answer:
Molecules of a synthetic polymer
Explanation:
In a synthetic macromolecular colloid, each dispersed particle may be a large molecule of a synthetic polymer.
6. Which one is a synthetic polymer commonly included among macromolecular colloids?
A.
Polythene
B.
Casein
C.
Starch
D.
Glycogen
Correct Answer:
Polythene
Explanation:
Polythene is a synthetic polymer and can show macromolecular colloidal behavior in a suitable medium.
7. Synthetic macromolecular colloids differ from multimolecular colloids because their dispersed particles are usually
A.
Aggregates of many small molecules
B.
Single large polymer molecules
C.
Only hydrated ions
D.
Small crystals of salts
Correct Answer:
Single large polymer molecules
Explanation:
In synthetic macromolecular colloids, a single high-polymer molecule can act as a colloidal particle.
8. Which of the following is a synthetic rubber and can form a synthetic macromolecular colloid?
A.
Buna-S
B.
Natural gum
C.
Starch paste
D.
Gelatin
Correct Answer:
Buna-S
Explanation:
Buna-S is a synthetic rubber made from polymeric substances and is an example of a synthetic macromolecular material.
9. The colloidal behavior of synthetic polymers is mainly associated with their
A.
Very low molecular mass
B.
High molecular mass
C.
Ability to form simple ions
D.
Gaseous state
Correct Answer:
High molecular mass
Explanation:
Synthetic polymers have very high molecular masses, allowing their individual molecules to have colloidal dimensions.
10. Which pair contains only synthetic macromolecular substances?
A.
Nylon and polystyrene
B.
Starch and cellulose
C.
Gelatin and albumin
D.
Gum arabic and casein
Correct Answer:
Nylon and polystyrene
Explanation:
Nylon and polystyrene are both man-made high polymers and are examples of synthetic macromolecular colloidal substances.
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