Advertisements
Advertisements
Question
If Cu, Fe, Zn, Al elements are arranged in increasing order of their reactivity then the correct order would be which of the following?
Options
Cu, Fe, Zn, Al
Al, Cu, Fe, Zn
Zn, Al, Cu, Fe
Fe, Zn, Al, Cu
Solution
Cu, Fe, Zn, Al
APPEARS IN
RELATED QUESTIONS
What chemical process is used for obtaining a metal from its oxide?
Give reasons.
Carbonate and sulphide ores are usually converted into oxides during the process of extraction.
In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.
Why do gold ornaments look new even after several years of use?
Name one metal which is extracted by electrolytic reduction.
Aluminum is used in thermite welding:
write reaction for process?
Identify the process given in following passage and draw neat labelled diagram showing the process.
Electrolysis of molten mixture of alumina (melting point > 20000C) is done in a steel tank. The tank has a graphite lining on the inner side. This lining does the work of a cathode. A set of graphite rods dipped in the molten electrolyte works as anode. Cryolite (Na3AlF6) and fluorspar (CaF2) are added in the mixture to lower its melting point upto 10000C.
Define the term : Slag
What is meant by refining of metals? Name the three common methods used for refining.
How many valence electrons are present in metals ?
State the property of the metal being utilized in the following :
Use of metal | Property |
Zinc in Galvanization | |
Aluminium in Thermite welding |
Define calcination.
Write the name.
The process of strong heating of carbonate ores in insufficient air–
Identify who I am!
Ore of Aluminum- ______
Write the molecular formulae of the following compound.
Cryolite
Explain concept with example/explain with the help of a balanced equation.
Calcination
Complete flow chart given below.
Explain in brief types of extraction of less reactive metals according to their reactivity.
Care must be taken while diluting concentrated nitric acid with water. Why?