Refining of metals - class-X
Description: refining of metals | |
Number of Questions: 72 | |
Created by: Rani Rajan | |
Tags: production of metals metals and non-metals metallurgy principles and processes of isolation of elements general principles and processes of isolation of elements chemistry metals and non metals |
Which of the following is not a method of refining of metals?
Which one of the following is the true in electrolytic refining?
Four metals and their methods of refinement are given
(i) $Ni,\ Cu,\ Zr,\ Ga$
(ii) Electrolysis, van Arkel process, zone refining, Mond's process
Choose the right method for each:
Mark the correct statements:
Electrolysis is used for refining certain metals such as copper and zinc.
'Softening of lead' means ___________.
In the electrolytic refining of a metal M, what would you take as the anode is :
On the basis of following features identify the correct option:
I. This metal is not obtained in free state.
II. This metal is obtained by electrolysis of their chlorides in molten state.
In electrolytic refining, which one is the anode and which is cathode?
Why refining of metals is required?
Separation of impurities from the extracted metals is known as __________.
Impurities present at anode are deposited at the bottom and called as _______.
Refining of aluminium is done by __________.
Which of the following is not a method of refining?
When stones are separated from rice, we throw away the solid component.
During extraction of metals, electrolytic refining is used to obtain pure metals. Material which will be used as anode, for refining of silver metal by this process, is:
Sodium is obtained by the electrolysis of:
last process of metallurgy is ?
Which of the following pair can be refined using same basic principle?
In the refining of copper, pure copper is deposited on:
Zirconium is purified by
(a) Mond process (1) Ni
(b) Van-Arkel (2) Zr
(c) Liquation (3) Ga
(d)Zone refining (4) Sn
Correct option is:
An insoluble substance or mixture that collects at the anode in an electrolytic refining or plating process is known as anode mud.
State True or False.
Gold is extracted by hydrometallurgical process, based on its property:
Which of the following is true for electrolytic refining?
The method used in metallurgy to refine the impure metal is:
Select the incorrect meaning of softening of lead.
Silver containing lead as an impurity is not purified by:
Which of the following metals are obtained by electrolysis of their chlorides in molten state?
(i) $Na$
(ii) $Ca$
(iii) $Fe$
(iv) $Cu$
In the electrolytic refining of zinc,
Aluminium is purified by :
Anode mud is obtained in which of the following processes?
Which of the following metal refined-electrolytically?
Which of the following metals is not refined by electrolytic refining?
The metal refined-electolytically is:
Which of the following is purification method?
Mark the correct option:
a) Pure metal from the electrolyte is deposited at the anode.
b) The soluble impurities go into the solution.
c) Insoluble impurities known as anode mud.
In electrolytic refining, which of the following is used as an electrolyte?
Separation of impurities from the extracted metals is generally done by __________.
Lead is refined by _________________.
Sodium metal is refined by ___________.
The impurities obtained after extraction of iron by reduction is called as _______.
By heating pig iron in furnace it is converted to ____________.
Refining of metal is:
The electrolyte used for copper refining is an acidic solution of:
The purest copper is obtained by:
For alkali metals, only electrolytic reduction is employed.
Match the following.
Separation process | Purpose for which we do the separation | What do we do with the separated components |
---|---|---|
1) Separate stones from rice | a) To remove non useful components | i) We throw away the impurities |
2) Churning milk to obtain butter | b) To remove impurities or harmful components | ii) we throw away the solid component |
3) Separate tea leaves | c) to separate two different but useful components. | iii) we use both the components. |
Which of the following represents correct statement(s)?
Handpicking is used for separating tiny impurities.
Which of the following represents incorrect statement(s)?
Which of the following represents correct statement(s)?
Sieves are used at construction sites to separate pebbles and stones from sand.
Nickel metal is purified by the vapour phase refining process. This process is based on the fact that:
Group II. A elements are extracted from their chlorides by..........reduction.
Which of the following statements is/are correct regarding metallurgy?
Silver can be separated from lead by:
Refining of silver is done by___________.
Refining of silver is done by________.
Cupellation process is used in the metallurgy of:
When alloy of silver and lead is rich in silver:
Softening of lead means:
Tin is not refined by:
When alloy of silver and lead is rich in silver :
Refining of tin can be done by :
Extraction of metal from the ore cassiterite involves
Which are correctly matched?
In Poling process, Hydrocarbon gases escaping from the poles act as _____ agents.
In polling, wood gas is responsible for the removal of volatile impurities.
Which of the following methods is used to remove lead present in silver ?
Poling process: