Chemistry
The metal oxide which can react with acid as well as alkali is :
- Silver oxide
- Copper [II] oxide
- Aluminium oxide
- Calcium oxide
Metallurgy
22 Likes
Answer
Aluminium oxide
Reason — Amphoteric oxides like aluminium oxide react with acids as well as alkalis giving salt and water.
Answered By
10 Likes
Related Questions
The sketch illustrates refining of aluminium by Hoope's process. [reference]
(i) Which of A and B is the cathode and which one is the anode?
(ii) What is the electrolyte in the tank?
(iii) What material is used for the cathode?
Brass is an alloy of :
- Copper and tin
- Copper and zinc
- Zinc and lead
- Lead and tin
Correct the following statement — Haematite is the chief ore of aluminium.
The following is a sketch of an electrolytic cell used in the extraction of aluminium :
(i) What is the substance of which the electrodes A and B are made?
(ii) At which electrode (A or B) is the aluminium formed ?
(iii) What are the two aluminium compounds in the electrolyte C ?
(iv) Why is it necessary for electrode B to be continuously replaced ?