MCQ
Which is not a mineral of aluminium?
- ✓Anhydrite
- BBauxite
- CCorundum
- DDiaspore
✓
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: $\mathrm{Al}_2 \mathrm{O}_3$
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.
Explore more
Similar questions
Chlorine on reaction with hot and concentrated sodium hydroxide gives
The correct order of increasing basic nature for the bases $\mathrm{NH}_3, \mathrm{CH}_3 \mathrm{NH}_2$ and $\left(\mathrm{CH}_3\right)_2 \mathrm{NH}$ is?
→Which of the following is the most suitable method for removing the traces of water from ethanol
Maximum number of oxidation states of transition metal is derived from the following configuration
When $K_2 Cr_2O_7$ is converted to $K_2CrO_4$ , the change in the oxidation state of chromium is
→$\text{TEL}$ is a compound used as:
→We have taken a saturated solution of $\mathrm{AgBr} . \mathrm{K}_{\text {sp }}$ of $\mathrm{AgBr}$ is $12 \times 10^{-14}$. If $10^{-7} \mathrm{~mole}$ of $\mathrm{AgNO}_3$ are added to $1$ litre of this solution find conductivity (specific conductance) of this solution in terms of $10^{-7} \mathrm{~S} \mathrm{~m}^{-1}$ units.
→Given, $\lambda_{\left(\mathrm{Ag}^{+}\right)}^{\circ}=6 \times 10^{-3} \mathrm{Sm}^2 \mathrm{~mol}^{-1}, \lambda_{\left(\mathrm{Br}^{-}\right)}^{\circ}=8 \times 10^{-3} \mathrm{Sm}^2 \mathrm{~mol}^{-1}, \lambda_{\left(\mathrm{NO}_{\mathrm{j}}\right)}^{\circ}=7 \times 10^{-3} \mathrm{Sm}^2 \mathrm{~mol}^{-1}$.
An example for a polyhydric alcohol is:
Identify $C$ in the following sequence of reactions
→Reaction between an acid and alcohol will give