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This quiz contains 13 questions from a mix of 1 subtopics.
What is the purpose of using a condenser in refluxing reactions?
to condense evaporated organic vapours back into liquid
to prevent the reaction vessel from overheating
to add anti-bumping granules
to heat the reaction mixture
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Why are anti-bumping granules added to the flask during refluxing?
to condense organic vapours
to speed up the reaction
to avoid open flames
to prevent violent boiling
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Which of the following is true about heating during refluxing?
it is done using a hot plate
it is done using an open flame
it is done electrically
it is not required
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What is the main reason for using refluxing in organic reactions?
to prevent the evaporation of volatile compounds
to purify the organic compounds
to increase the reaction temperature
to separate the products from the reactants
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In distillation, components evaporate in order of their...
decreasing boiling points
decreasing molecular weights
increasing molecular weights
increasing boiling points
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What is the purpose of the thermometer in a distillation apparatus?
to heat the mixture
to monitor the boiling point of the distilling vapour
to separate the components
to condense the vapours
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Which of the following is not a purification technique for organic products?
refluxing
drying
redistillation
extraction
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Repeated distillation helps to separate the product from impurities with...
similar molecular weights
different boiling points
different molecular weights
similar boiling points
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What is the purpose of using a drying agent like anhydrous magnesium sulfate?
to filter out impurities
to remove traces of water from organic products
to increase the boiling point of the mixture
to separate immiscible liquids
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After drying, the solid drying agent is removed by...
refluxing
extraction
filtration
distillation
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What is the purpose of using a separating funnel in extraction?
to separate immiscible liquids
to filter out impurities
to dry the organic product
to redistill the mixture
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In refluxing, the reaction mixture is heated in a...
test tube
conical flask
beaker
round-bottomed flask
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What technique is used to separate mixtures based on differences in boiling points?
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