Crystallization
Crystal Clarity: Test Your Knowledge on Crystallization
Welcome to our comprehensive quiz on crystallization! Dive deep into the fascinating world of crystallization and test your understanding of key concepts, mechanisms, and phenomena related to crystal growth and nucleation.
Whether you are a student, educator, or simply curious, this quiz will challenge your knowledge with thought-provoking questions.
- 11 engaging questions
- Multiple-choice and open-ended formats
- Immediate feedback on your answers
Which of the following is the first kinetic parameter which controls CSD?
A. Nucleation
B. Solubility index
C. Attrition
D. Temperature
Which of the following crystal defects is not due to spurious nucleation?
A. Needle formation
B. Decrease in purity
C. Disappearance of smaller crystals
D. Overlapping of crystal faces
Nucleation is a consequence of occasional rhythmic fluctuations on a molecular scale in a homogeneous phase that is in a state of metastable equilibrium.
A. True
B. False
Which of the following phenomenon precedes nucleation?
A. Condensation of fog drops in a supercooled vapor
B. Generation of bubbles in a superheated liquid
C. Both a & b
D. None
Statement 1: Sometimes in a solution due to random motion of the solute particles, the molecules and atoms aggregate together briefly. Statement 2: These aggregates gradually form a thermodynamically & kinetically stable lattice arrangement. Which of the statements are correct?
A. Statement 1
B. Statement 2
C. Both
D. None
Which of the following arrangements are correct?
A. Cluster → embryo → nucleus → crystal
B. Embryo → cluster →nucleus → crystal
C. Embryo → nucleus → cluster → crystal
D. Cluster → nucleus → embryo → crystal
A. Small particles possess significant amount of surface energy B. Growth of large crystals in supersaturated solution causes dissolution of smaller crystals. Which of the following is true?
A. Both phenomena are unrelated incidences
B. A is a consequence of crystallization.
C. A is partially responsible for occurrence of B
D. B is partially responsible for occurrence of A
Collisions between crystals in a crystallizer may cause new clusters to form. This is known as
A. Secondary nucleation
B. Oswald Ripening
C. Contact nucleation
D. Heterogeneous nucleation
ˆ†L law is based on one of the following assumptions. If the crystal growth is governed by supersaturation then
A. Crystals are invariant with competitive growth rates
B. Crystals are invariant with similar growth rates
C. Crystals are invariant with translational growth rate
D. Crystals are invariant with fluctuating growth rate
Nucleii are in a state of continuous unstable thermodynamic equilibrium
A. True
B. False
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