The metal is a liquid at room temperature.
- APotassium
- BZinc
- CGold
- ✓Mercury
Answer: D.
View full solution →Question types
Metallurgy question types
212 questions across 7 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.
212
Questions
7
Question groups
5
Question types
01
MCQ
13 Q→02[2 Mark Question Answer]
47 Q→03[3 Mark Question Answer]
19 Q→04[1 Mark Question Answer]
115 Q→05Fill in the blanks.
4 Q→06[5 Mark Question Answer]
10 Q→07TRUE / FALSE
4 Q→Sample Questions
Metallurgy questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Brass is an alloy of
- ACopper and tin
- ✓Copper and zinc
- CZinc and lead
- DLead and tin
Answer: B.
View full solution →Heating of the ore in the absence of air to high temperature
- ✓Calcination
- Broasting
- Cpulverization
- Dsmelting
Answer: A.
View full solution →Crushing of the ore into a fine powder
- ACalcination
- Broasting
- ✓pulverization
- Dsmelting
Answer: C.
View full solution →The diavalent metal whose oxide is reduced to metal by electrolysis of its fused salt is ________
- ✓Al
- BNa
- CMg
- DK
Answer: A.
View full solution →Name the main constituent metal in the following alloy:
Stainless steel
Stainless steel
Name the main constituent metal in the following alloy:
Brass
Brass
Name the main constituent metal in the following alloy:
Duralumin
Duralumin
State the property of the metal being utilized in the following :
| Use of metal | Property |
| Zinc in Galvanization | |
| Aluminium in Thermite welding |
Calcium, copper, lead, aluminium, zinc, chromium, magnesium, iron.
Choose the major metals from the list given above to make the following alloys:
(a) Stainless steel
(b) brass
Choose the major metals from the list given above to make the following alloys:
(a) Stainless steel
(b) brass
Answer the following question :
What is the difference between calcination and roasting.
What is the difference between calcination and roasting.
The sketch below illustrates the refin ing of aluminium by Hoopes process
(a) Which of A and B is th e cathode and which one is the anode?
(b) What is the electroly te in the tank?
( c) What material is used for th e cathode?
(a) Which of A and B is th e cathode and which one is the anode?
(b) What is the electroly te in the tank?
( c) What material is used for th e cathode?
Aluminium is extracted from its chief ore bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Name a chemicals used for dissolving aluminium oxide. In which state of sub-division is the chemical used?
Name a chemicals used for dissolving aluminium oxide. In which state of sub-division is the chemical used?
Aluminium is extracted from its chief ore bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Write three balanced equations for the purification of bauxite by Halls process.
Write three balanced equations for the purification of bauxite by Halls process.
From the metals copper, iron, magnesium, sodium and zinc, select a different metal in each case which:
(a) Does not react with dilute hydrochloric acid
(b) Can form $2^+$ and $3^+$ ions
(c) Has a hydroxide that reacts with both acid and alkalis.
(d) Does not react with cold water, but reacts with steam when heated.
View full solution →(a) Does not react with dilute hydrochloric acid
(b) Can form $2^+$ and $3^+$ ions
(c) Has a hydroxide that reacts with both acid and alkalis.
(d) Does not react with cold water, but reacts with steam when heated.
Answer the following question :
Write the constituents of electrolyte for the extraction of aluminum.
Write the constituents of electrolyte for the extraction of aluminum.
Answer the following question :
Name the process used for the enrichment of sulphide ore.
Name the process used for the enrichment of sulphide ore.
Answer the following question :
Name a metal which is found abundantly in earths crust.
Name a metal which is found abundantly in earths crust.
Correct the following statement :
Haematite is the chief ore of aluminium.
Haematite is the chief ore of aluminium.
Correct the following statement :
Copper reacts with nitric acid to produce nitrogen dioxide.
Copper reacts with nitric acid to produce nitrogen dioxide.
Non-metals form acidic oxides while metals form ______.
Metals form positive ions while non- metals ______.
Metals are malleable while non-metals are ______.
Metals are ______ while non-metals are ______ conductors of heat.
| X | Y | |
| Normal Electronic Configuration | 2,8,7 | 2,8,2 |
| Nature of Oxide | Dissolves in water and truns blue litmus red. | Very low solublity in water. Dissolves in hydrochloric acid |
| Tendency for Oxidising and reducing reactions | Tends to oxidise elements and compound | Tends to act 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 | Forms alloys |
(i) _________ is the metallic element.
(ii) Metal atoms tend to have a maximum of ________ electrons in the outermost energy level.
(iii) Non-metallic elements tend to form _________ oxides while metals tend to form _______oxides.
(iv) Non-metallic elements tend to be ______ conductors of heat and electricity.
(v) Metals tend to _______ electrons and act as ________ agents in their reactions with elements and compounds.
Answer the following question :
Write the chemical formulae of main ore iron and aluminum.
Write the chemical formulae of main ore iron and aluminum.
The following is an extract from Metals in the service of Man, Alexander and street /Pelican 1976:
Alumina (aluminium oxide) has a very high melting point of over $2000^oC $so that it cannot readily be liquefied. However, conversion of alumina to aluminium and oxygen, by electrolysis, can occur when it is dissolved in some other substance.
(a) Which solution is used to react with bauxite as a first step in obtaining pure aluminium oxide?
(b) The aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide. Write the balanced chemical equation for this reaction.
(c) Name the element which serves both as the anode and the cathode in the extraction of aluminium.
(d) Write the balanced chemical equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis.
(e) Give the balanced chemical equation for the reaction which occurs at the anode when aluminium is purified by electrolysis.
View full solution →Alumina (aluminium oxide) has a very high melting point of over $2000^oC $so that it cannot readily be liquefied. However, conversion of alumina to aluminium and oxygen, by electrolysis, can occur when it is dissolved in some other substance.
(a) Which solution is used to react with bauxite as a first step in obtaining pure aluminium oxide?
(b) The aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide. Write the balanced chemical equation for this reaction.
(c) Name the element which serves both as the anode and the cathode in the extraction of aluminium.
(d) Write the balanced chemical equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis.
(e) Give the balanced chemical equation for the reaction which occurs at the anode when aluminium is purified by electrolysis.
Compare the properties of a typical metal and a non- metal on the basis of the following:
(a) electronic configuration
(b) nature of oxides
(c) oxidizing or reducing action
(d) conductivity of heat and electricity
(a) electronic configuration
(b) nature of oxides
(c) oxidizing or reducing action
(d) conductivity of heat and electricity
In order to obtain one tone of aluminium, the following inputs are required:
4 tones of bauxite, $150 Kg $ of sodium hydroxide and $600 \ Kg$ of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
(i) Write the formula of cryolite.
(ii) Write down the word which correctly completes the following sentence.
"By dissolving aluminium oxide in cryolite, a ______ (conducting / non- conducting) solution is produced.
(iii) Why so much graphite required for this electrolytic process.
(iv) Write the equation for the reaction which takes place at cathode.
View full solution →4 tones of bauxite, $150 Kg $ of sodium hydroxide and $600 \ Kg$ of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
(i) Write the formula of cryolite.
(ii) Write down the word which correctly completes the following sentence.
"By dissolving aluminium oxide in cryolite, a ______ (conducting / non- conducting) solution is produced.
(iii) Why so much graphite required for this electrolytic process.
(iv) Write the equation for the reaction which takes place at cathode.
Metal will have 1 or 2 or 3 electrons in their valence shell.
Metals form non-polar covalent compounds
Metals are malleable and ductile
Metals are good conductors of electricity.
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