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5Points Quiz

Define precipitation in respect to wet chemical analysis?

        A.   A method of converting ions in solution into an insoluble compound

        B.   The process of separating solid (crystals or precipitate) from the liquid (mother liquor)

        C.   A method of reducing the volume of by heating

        D.   A method of converting water vapour in to liquid water

Answer: A

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What is a mole?

        A.   The amount of substance which contains as many element as there are atoms in 12 g carbon 12

        B.   The amount of substance which is contain in a solution

        C.   The amount of substance equivalent to carbon 12 atom present in a solution

        D.   All the options are correct

Answer: A

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Why do we heat precipitates during gravimetric analysis?

        A.   To obtain a compound of constant composition

        B.   To increase the solubility of the precipitates

        C.   To dry the precipitates

        D.   To speed the reaction rate of the precipitates

Answer: C

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The Avogadro number 6.02 X 10{^23} is equivalent to?

        A.   Number of atoms, ions or molecules in a mole

        B.   Number of mole of an atom equivalent to carbon atom

        C.   Number of elementary units in a mole of a substance

        D.   All options above are correct

Answer: C

For More Quiz Questions click here to download Global Quiz on Google PlayStore


For More Quiz Questions click here to download Global Quiz on Google PlayStore


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