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Chapter Wise Mock Test for NEET. We covered all the Chapter Wise Mock Test for NEET Students in this post for free so that you can practice well for the exam.
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MCQ on NEET Biology Mock Test Chapter Wise Free for Students
In the Hall–Heroult process for the electrolytic extraction of alumina, which substance is released at the cathode?
(A) Carbon monoxide
(B) Oxygen
(C) Carbon dioxide
(D) Aluminium
Option d – Aluminium
The levigation technique is suitable for concentrating ores of which metal?
(A) Nickel
(B) Aluminium
(C) Chromium
(D) Zinc
Option c – Chromium
What are the products formed when powdered bauxite is heated with coke in a nitrogen atmosphere?
(A) Al₄C₃ and CO₂
(B) AlN and CO
(C) Al₄C₃ and NO₂
(D) AlN and CO₂
Option b – AlN and CO
In zinc metallurgy, producer gas is utilized during smelting. What gases constitute producer gas?
(A) CO and N₂
(B) H₂ and O₂
(C) N₂ and O₂
(D) CO and H₂
Option a – CO and N₂
Which of the following statements about column chromatography is INCORRECT?
(A) Silica gel serves as the stationary phase
(B) It is effective for purifying elements with chemically similar impurities
(C) Components of a mixture are adsorbed at different levels on the adsorbent
(D) A weakly adsorbed substance elutes more slowly than a strongly adsorbed one
Option d – A weakly adsorbed substance elutes more slowly than a strongly adsorbed one
Identify the INCORRECT statement:
(A) Reduction of a metal oxide is easier when the resulting metal is in liquid form at the reduction temperature
(B) In the separation of galena from sphalerite, sodium cyanide forms Na₂[Zn(CN)₄] on sphalerite’s surface
(C) Copper is more effective than zinc in reducing sodium dicyanoaurate(I)
(D) Electrolysis of molten NaCl produces chlorine as a by-product
Option c – Copper is more effective than zinc in reducing sodium dicyanoaurate(I)
A metal ‘M’ reacts with NaOH to form a white gelatinous precipitate ‘X’, which dissolves in excess NaOH. On heating, ‘X’ forms an oxide used in chromatography. Identify metal ‘M’.
(A) Iron
(B) Aluminium
(C) Zinc
(D) Calcium
Option b – Aluminium
The ore cassiterite, which contains tin, is concentrated by which method?
(A) Magnetic separation
(B) Froth flotation
(C) Leaching
(D) Gravity separation
Option d – Gravity separation
In the process of gold extraction, what role does the cyanide solution play?
(A) Removes impurities
(B) Forms a water-soluble complex with gold
(C) Generates a cationic complex with gold
(D) Reduces gold oxide or sulfide to elemental gold
Option b – Forms a water-soluble complex with gold
Which method is most effective for extracting aluminum from aluminum oxide?
(A) Electrolytic reduction of Al₂O₃
(B) Reduction of Al₂O₃ with carbon
(C) Reduction of Al₂O₃ using sodium
(D) Reduction of Al₂O₃ using carbon monoxide
Option a – Electrolytic reduction of Al₂O₃
What is the oxidation number of the metal in haematite?
(A) +2
(B) +3
(C) +4
(D) +1
Option b – +3
Which combination of metals is found in german silver?
(A) Cobalt, zinc, nickel
(B) Tin, iron, zinc
(C) Copper, zinc, nickel
(D) Copper, carbon, iron
Option c – Copper, zinc, nickel
Zone refining is commonly used to obtain highly pure samples of which element?
(A) Zinc
(B) Titanium
(C) Indium
(D) Zirconium
Option c – Indium
In the leaching process of bauxite, fusion with sodium carbonate forms compound ‘X’. Upon warming and adding CO₂, compound ‘Y’ precipitates. What are ‘X’ and ‘Y’?
(A) NaAlO₂ and Al₂O₃
(B) Al(OH)₃ and Al₂O₃
(C) Na[Al(OH)₄] and Al(OH)₃
(D) NaAlO₂ and Al(OH)₃
Option d – NaAlO₂ and Al(OH)₃
Silica is added during copper smelting to remove which substance as slag?
(A) Iron(II) sulfide
(B) Copper(I) sulfide
(C) Iron(II) oxide
(D) Copper(I) oxide
Option c – Iron(II) oxide
What is the typical composition of bronze?
(A) Cu 30%, Zn 30%, Ni 40%
(B) Cu 88–90%, Sn 10–12%
(C) Cu 50%, Sn 50%
(D) Cu 80%, Zn 10%, Sn 10%
Option b – Cu 88–90%, Sn 10–12%
Choose the INCORRECT statement:
(A) Roasting removes moisture from ores
(B) Calcination is carried out in the absence of air
(C) Zinc blende is subjected to calcination during pyrometallurgical extraction
(D) Hydrometallurgy relies on complex formation for metal extraction
Option c – Zinc blende is subjected to calcination during pyrometallurgical extraction
Which of the following pairs is incorrectly matched with its extraction process?
(A) Distillation – Zinc extraction
(B) Zone refining – Boron extraction
(C) Liquation – Silver extraction
(D) Electrolytic reduction – Aluminum extraction
Option c – Liquation – Silver extraction
The ore with formula CuCO₃·Cu(OH)₂ is called:
(A) Copper glance
(B) Cuprite
(C) Chalcopyrite
(D) Malachite
Option d – Malachite
Which type of iron is produced in a blast furnace?
(A) Cast iron
(B) Wrought iron
(C) Pig iron
(D) Steel
Option c – Pig iron
Xanthates are commonly used to concentrate which ore?
(A) Siderite
(B) Copper glance
(C) Calamine
(D) Malachite
Option b – Copper glance
During the electrolysis of impure copper, which impurity does not dissolve into the electrolyte?
(A) Iron
(B) Zinc
(C) Gold
(D) Nickel
Option c – Gold
Identify the reaction that does not occur in a blast furnace during iron extraction.
(A) CaCO₃ → CaO + CO₂
(B) C + CO₂ → 2CO
(C) 3Fe₂O₃ + CO → 2Fe₃O₄ + CO₂
(D) FeO + SiO₂ → FeSiO₃
Option d – FeO + SiO₂ → FeSiO₃
Which of the following combinations includes only carbonate ores?
(A) Siderite and Calamine
(B) Cryolite and Malachite
(C) Calamine and Zincite
(D) Cuprite and Kaolinite
Option a – Siderite and Calamine
The main impurity found in red bauxite is:
(A) Fe₂O₃
(B) SiO₂
(C) FeSiO₃
(D) CaCO₃
Option a – Fe₂O₃
Most metal sulphide ores are concentrated using froth flotation. Which ore is an exception and is concentrated through leaching?
(A) Galena
(B) Copper pyrites
(C) Argentite
(D) Sphalerite
Option c – Argentite
Which of the following statements is INCORRECT?
(A) Roasting of sulphide ores to oxides has a negative Gibbs free energy change
(B) Carbon and hydrogen are effective reducing agents for metal sulphides
(C) Roasting of sulphide ores is thermodynamically favorable
(D) The standard Gibbs free energy of metal sulphides is more negative than that of CS₂ and H₂S
Option b – Carbon and hydrogen are effective reducing agents for metal sulphides
Which of the following is NOT considered a hydrated oxide?
(A) Limonite
(B) Bauxite
(C) China clay
(D) Dolomite
Option d – Dolomite
Which substance is added to an aqueous solution of sodium argentocyanide to isolate silver?
(A) Zinc dust
(B) Copper powder
(C) Sodium amalgam
(D) Sodium thiosulphate
Option a – Zinc dust
In which refining method is a volatile metal compound formed and then decomposed to yield pure metal?
(A) Fractional crystallization
(B) Distillation
(C) Liquation
(D) van Arkel method
Option d – van Arkel method
What is the chemical formula of franklinite?
(A) ZnCO₃
(B) Zn₂SiO₄
(C) ZnO·Fe₂O₃
(D) ZnS
Option c – ZnO·Fe₂O₃
Blister copper is purified using which technique?
(A) Distillation
(B) Zone refining
(C) Mond process
(D) Polling
Option d – Polling
Which metal’s calcined ore can be reduced using carbon?
(A) Sphalerite
(B) Calamine
(C) Copper pyrites
(D) Iron pyrites
Option b – Calamine
Mercury can be recovered from gold amalgam by:
(A) Adding zinc metal
(B) Electrolytic refining
(C) Distillation
(D) Treating with nitric acid
Option c – Distillation
Near the top of a blast furnace at around 900 K, which substance reduces iron oxide to iron?
(A) Carbon
(B) Carbon monoxide
(C) Aluminium
(D) Hydrogen
Option b – Carbon monoxide
The extraction of which metal involves the formation of a volatile complex?
(A) Copper
(B) Nickel
(C) Zinc
(D) Iron
Option b – Nickel
What is the composition of copper matte?
(A) Cu₂S and FeS
(B) Cu₂S and Cu₂O
(C) Cu₂S and FeO
(D) Cu₂O and FeS
Option a – Cu₂S and FeS
What role do fatty acids play in the froth flotation process?
(A) Increase water attraction of ore particles
(B) Make ore particles repel water
(C) Make ore soluble
(D) Increase ore density
Option b – Make ore particles repel water
Among the commercial types of iron, which contains the least carbon?
(A) Cast iron
(B) Steel
(C) Wrought iron
(D) Pig iron
Option c – Wrought iron
Which metal CANNOT be extracted using hydrometallurgy?
(A) Silver
(B) Gold
(C) Zinc
(D) Copper
Option c – Zinc
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