CBSE · Chemistry
General Principles and Processes of Isolation of Metals
184 practice questions for CBSE — 170 easy · 14 medium · 0 hard. Every question is graded instantly with a step-by-step solution when you miss it.
Start free practice →Sample questions
MCQ
The chemical composition of slag formed during the smelting process in the extraction of copper is
MCQ
Carbon monoxide forms volatile compound with
MCQ
Sodium cyanide is added as a depressant in the froth floatation process when the ore contains a mixture of $\mathrm{ZnS}$ and PbS. This is because
MCQ
Match the following. The correct answer is (A) (B) (C) (D)
MCQ
Which one of the following is the mineral for tin?
MCQ
In Ellingham diagram, the plot is drawn between
MCQ
What is the slag formed in the extraction of iron?
MCQ
Which of the following is used as froth stabilizer in froth floatation process?
MCQ
Consider the following: Statement-I : In the extraction of Al by Hall-Heroult process, pure $\mathrm{Al}_2 \mathrm{O}_3$ mixed with $\mathrm{Na}_3 \mathrm{~AlF}_6$ lowers its melting point and increases conductivity.…
MCQ
Which statement is incorrect regarding Hall-Heroult process for metallurgy of aluminium? Use of \(\mathrm{Na}_3 \mathrm{AlF}_6\) lowers the melting point of \(\mathrm{Al}_2 \mathrm{O}_3\) Steel vessel with lining of…
MCQ
In the following unbalanced reaction, the product formed is $\mathrm{Al}_2 \mathrm{O}_3+\mathrm{NaOH}(a q)+\mathrm{H}_2 \mathrm{O} \longrightarrow$
MCQ
In froth floatation process for concentration of ores, the ore particles float because