Saleha Pervez and Shikha Goel Solutions for Chapter: Metallurgy, Exercise 6: ARCHIVES*(Last 6 Years)
Saleha Pervez Chemistry Solutions for Exercise - Saleha Pervez and Shikha Goel Solutions for Chapter: Metallurgy, Exercise 6: ARCHIVES*(Last 6 Years)
Attempt the practice questions on Chapter 7: Metallurgy, Exercise 6: ARCHIVES*(Last 6 Years) with hints and solutions to strengthen your understanding. All in One - ICSE Chemistry solutions are prepared by Experienced Embibe Experts.
Questions from Saleha Pervez and Shikha Goel Solutions for Chapter: Metallurgy, Exercise 6: ARCHIVES*(Last 6 Years) with Hints & Solutions
From the list of terms given, choose the most appropriate term to match the given description.
(calcination, roasting, pulverisation, smelting).
Crushing of the ore into a fine powder.
From the list of terms given, choose the most appropriate term to match the given description.
(calcination, roasting, pulverisation, smelting).
Heating of the ore in the absence of air to a high temperature.
Write the equation for the reaction where the aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide.
Name the compound added to pure alumina to lower the fusion temperature during the electrolytic reduction of alumina.
Write the equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis.
Explain, why it is preferable to use a number of graphite electrodes as anode instead of a single electrode, during the electrolysis of alumina?
The property possessed by metals by which they can be beaten into sheets.
| Electronic configuration | ||
| Nature of oxide | Dissolves in water and turns blue litmus red | Very low solubility in water. Dissolves in hydrochloric acid. |
| Tendency for oxidising and reducing reactions | Tends to oxidise elements and compounds | Tends to acts as a reducing agent. |
| Electrical and thermal conductivity | Very poor electrical conductor. Poor thermal conductivity | Good electrical conductor. Good thermal conductor. |
| Tendency to form alloys and amalgams | No tendency to form alloys | Form alloys. |
Using the information above, fill in the blank.
_____ is the metallic element.
