The chief ore of aluminium is:
Correct answer: D. Al2O3.2H2O
- A. Na3AlF6
- B. Al2O3.nH2O
- C. Al2O3
- D. Al2O3.2H2O
Explanation
The chief ore of aluminium is bauxite, with the chemical formula Al2O3.2H2O. Bauxite is primarily composed of aluminium hydroxide minerals, which are processed to produce pure aluminium. The other options are related to aluminium but are not the primary ore. Cryolite (Na3AlF6) is used in the extraction process, not as an ore. Alumina (Al2O3) is a refined product derived from bauxite, while Al2O3.nH2O refers to various alumina hydrates but not specifically to bauxite.
Last updated
About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
2NaOH(aq) + Cl2(g) → NaCl + NaClO + H2O proceed at:
A compound 'X' on heating gives a colourless gas. The residue is dissolved in water to produce 'Y'. When CO₂ is passed through the aqueous solution of 'Y', it produces 'Z', which on gentle heating gives back 'X'. Compound 'X' is:
A elements are named as alkali metals because
A gas which burn with blue flame is:
A gas which burns with a blue flame is