Chemistry - General Principles and Processes of Isolation of Metals Question with Solution | TestHub
ChemistryGeneral Principles and Processes of Isolation of MetalsGeneralEasy2 minPYQ_2020
ChemistryEasysingle choice
Sometimes it is possible to separate two sulphide ores by adjusting the proportion of oil to water or by using depressants in froth flotation. When a depressant NaCN is added to an ore containing ZnS and PbS, what is the correct observation?
Options:
Answer:
B
Solution:
NaCN acts as a depressant, it selectivley prevents ZnS from coming to froth by forming a complexbut allows PbS to come with froth.
Stream:NTA_ABHYASSubject:ChemistryTopic:General Principles and Processes of Isolation of MetalsSubtopic:General
⏱ 2mℹ️ Source: PYQ_2020
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