Download App

General Principles and Processes of Isolation of Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryGeneral Principles and Processes of Isolation of Elements1 Mark
MCQ
Which ore is concentrated by froth flotation method?
  • A
    Horn silver
  • B
    Bauxite
  • ✓
    Cinnabar
  • D
    Haemattie
✓

Answer

Correct option: C.
Cinnabar
Generally sulphide ores are concentrated by "Froth floatation" and cinnabar$(\text{HgS})$ is a sulphide ore.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from General Principles and Processes of Isolation of Elements→General Principles and Processes of Isolation of Elements — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

The heaviest atom amongst the following is
→
Resistance of a decimolar solution between two electrodes $0.02\,\,meter$ apart and $0.0004\,\, m^2$ in area was found to be $50\,\, ohm.$ Specific conductance $(k)$ is .......... $\mathrm{S\,m}^{-1}$
→
The elevation of boiling point of $0.10\, m$ aqueous $CrCl _{3}, xNH _{3}$ solution is two times that of $0.05\, m$ aqueous $CaCl _{2}$ solution. The value of $x$ is.........

[Assume $100 \%$ ionisation of the complex and $CaCl _{2},$ coordination number of $Cr$ as $6,$ and that all $NH _{3}$ molecules are present inside the coordination sphere $]$

→
Which of the following compound is not a vitamin?
→
The stabilizer used in the preparation of colloidal sol of mercury and sulphur is:
→
Which of the following compounds will form significant amount of meta product during mono-nitration reaction ?
→
Which one of the following pair is not correctly matched?
→
Match List $- I$ with List $- II.$

List $- I$

List $- II$
$(a)$ Zymase $(i)$ Stomach
$(b)$ Diastase $(ii)$ Yeast
$(c)$ Urease $(iii)$ Malt
$(d)$ Pepsin $(iv)$ Soyabean

Choose the correct answer from the options given below

→
Of the following metals, the most reactive metal is:
→
Specific reagent required for dehydrohalogenation is :
→