- 1. Purification is the process of removing impurities, contaminants, or unwanted elements from something. It is a methodical and intentional cleansing process that aims to restore purity and cleanliness. In various contexts, purification can refer to physical, mental, emotional, or spiritual purification. It is often associated with rituals, traditional practices, or modern techniques that eliminate toxins, negativity, or harmful substances. Purification plays a significant role in maintaining health, balance, and harmony in different aspects of life.
What is the process of removing impurities from a substance called?
A) Purification
B) Filtration
C) Distillation
D) Evaporation
- 2. Which method uses a solvent to dissolve a substance, separating it from impurities?
A) Chromatography
B) Recrystallization
C) Decantation
D) Sublimation
- 3. What technique involves heating a solution to allow the solvent to evaporate, leaving behind the purified substance?
A) Crystallization
B) Evaporation
C) Sublimation
D) Filtration
- 4. Which process involves separating a mixture based on the differences in boiling points of the components?
A) Crystallization
B) Distillation
C) Chromatography
D) Decantation
- 5. What method uses a porous barrier to separate solid particles from a liquid?
A) Sublimation
B) Recrystallization
C) Filtration
D) Decantation
- 6. Which process involves passing a gas through a liquid or solid to remove impurities or to extract a desired substance?
A) Sublimation
B) Desorption
C) Absorption
D) Precipitation
- 7. Which technique utilizes an electric current to separate and purify elements or compounds that are electrically conductive?
A) Electroplating
B) Electron microscopy
C) Electrophoresis
D) Electrolysis
- 8. What is the technique used to remove dissolved salts from water by passing it through a semipermeable membrane?
A) Distillation
B) Filtration
C) Crystallization
D) Reverse osmosis
- 9. What is the process of cooling a solution to form pure crystals of a substance as it becomes less soluble?
A) Filtration
B) Chromatography
C) Recrystallization
D) Crystallization
- 10. Which technique involves heating a solid to convert it into a vapor that is then cooled and collected as a purified solid?
A) Sublimation
B) Distillation
C) Crystallization
D) Evaporation
- 11. What is the process of removing germs, toxins, or contaminants to make something clean and safe to use or consume?
A) Sterilization
B) Disinfection
C) Sanitization
D) Decontamination
- 12. Which method involves stirring a mixture of a solid and a solvent to extract a desired component into the solvent?
A) Precipitation
B) Ion exchange
C) Leaching
D) Titration
- 13. What is the process of removing undesirable odor and impurities from a liquid through the use of activated carbon?
A) Desorption
B) Adsorption
C) Sublimation
D) Catalysis
- 14. What is a process used to separate different components in a mixture based on their different affinities for a stationary phase?
A) Filtration
B) Chromatography
C) Recrystallization
D) Decantation
|