Method of Purification Quiz Questions and Answers PDF Download eBook p. 7
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Quiz on Method of Purification PDF Download eBook
MCQ: Alternative techniques to crystallization involve
- decanting only
- decanting and centrifuging
MCQ: If molten Lead Bromide (PbBr2) is electrolyzed,
- at anode, brown fumes of bromide gas are given off
- at anode, molten lead can be seen
- at cathode, brown fumes can be seen
- at cathode, lead bromide can be seen
MCQ: In an acidified solution of Potassium Dichromate(VI) (K2Cr2O7), Dichromate ion (Cr2O7-2) becomes reduced to
- Chromate (V) ions
- Chromium (III) ions
- Chromium (II) ions
- Chromium (VI) ions
MCQ: Which one of them is correct about electronic thermometers?
- there is mercury in glass thermometer
- there is alcohol in glass thermometer
- they are used to reduce the risk of mercury poisoning if broken
- none of above
MCQ: In the periodic table, the period number indicates the number of