Which instrument is used to measure the mass of a substance accurately in the laboratory?
Correct answer: C. Electronic balance
- A. Measuring cylinder
- B. Thermometer
- C. Electronic balance
- D. Burette
Explanation
An electronic balance is used to measure mass accurately. It gives readings in grams or milligrams. Other instruments measure volume or temperature, not mass.
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About Experimental Techniques in Chemistry
Separation methods are selected according to differences in solubility, particle size, volatility and sublimation behaviour. Filtration and crystallisation separate insoluble or dissolved solids, sublimation isolates suitable volatile solids, distillation separates liquids by boiling point, and solvent extraction transfers a substance between immiscible solvents.
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