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A common aplication of distillation process is
A. Refining of petrochemicals
B. Preparation of absolute ethanol
C. Purification of organic copounds
D. Sieving
Answer: D
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Electronic balance is primariy used for
A. Balancing substances
B. Measuring volumes
C. Calibration of equipments
D. Measuring weights
Answer: D
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Which of the following apparatus can not be used in distillation?
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Distillation is used to separate the mixture of
A. Immiscible liquids
B. Immiscible gases
C. Miscible liquid
D. Miscible gases
Answer: C
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Extremely corrosive substances like hydrofluoric acid are handled in
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To avoid making error during weighing one is advised to use
A. As many as possible balances
B. Different balance
C. Several balances
D. One balance only
Answer: D
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The vessel to be weighed should be placed
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If a procedure tells you to "Add about 3 g of ammonium sulphate" which balance would you use?
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In order to zero weighing baance before taking measurement one has to
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