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 is not a mineral of aluminium?
  • ✓
    Anhydrite
  • B
    Bauxite
  • C
    Corundum
  • D
    Diaspore
✓

Answer

Correct option: A.
Anhydrite
Anhydrite: anhydrous $\mathrm{CaSO}_4$
Bauxite: $\mathrm{AlOx}(\mathrm{OH})(3-2 x)$
Diaspore: $\mathrm{Al}_2 \mathrm{O}_3 \cdot \mathrm{H}_2 \mathrm{O}$
Corundum: $\mathrm{Al}_2 \mathrm{O}_3$

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 tendency of an electrode to lose electrons is known as
→
For the following reactions which one oxide is more stable

${X_2} + {O_2} \rightleftharpoons 2XO\,\,\,\,\,\,\,\,\,\,\,{K_1} = 5$

${X_2} + 2{O_2} \rightleftharpoons 2X{O_2}\,\,\,\,\,\,\,\,\,\,\,{K_2} = 10$

→
Crystal field stabiliztion energy $(CFSE)$ for high spin $d^4$ (tetrahedral complex) is $\Delta t = CFSE$ for tetrahedral 
→
Which one is used as a food preservative
→
Proteins are found to have two different types of secondary structures viz. he lix and $\beta-$pleated sheet structure. $\alpha-$helix structure of protein is stabilized by:
→
In esterification of an acid, the other reagent is
→
Which element from $V$ group, gives most basic compound with hydrogen
→
The colour of the coordination compounds depends on the crystal field splitting. What will be the correct order of absorption of wavelength of light in the visible region, for the complexes,$\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+},\left[\mathrm{Co}(\mathrm{CN})_6\right]^{3-},\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}$
→
In Which of the following increasing order of splitting energy correct ?
→
Assertion : $F$ is more electronegative than $Cl$.

Reason : $F$ has high electron affinity than $Cl$.

→