Chapter Wise Mock Test for NEET

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MCQ on NEET Biology Mock Test Chapter Wise Free for Students

In Hall and Heroult’s process of electrolysis of alumina, which of the following is liberated at the cathode?

(A) Carbon monoxide

(B) Oxygen

(C) Carbon dioxide

(D) Aluminium

Option d – Aluminium

Levigation method can be used to concentrate ores containing which of the following metal?

(A) Nickel

(B) Aluminium

(C) Chromium

(D) Zinc

Option c – Chromium

Which of the following products are formed when powdered white bauxite is mixed with coke and then heated in an inert atmosphere of nitrogen?

(A) Al4C3 + CO₂

(B) AIN+ CO

(C) Al4C3 + NO₂

(D) AIN + CO2

Option b – AlN+ CO

In the metallurgy of zinc, producer gas is used as a fuel during the smelting process. Which of the following mixture of gases constitutes 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 is INCORRECT regarding column chromatography?

(A) Silica gel is used as a stationary phase.

(B) It is a useful technique for purification of the elements in which impurities have similar chemical properties as that of the element.

(C) Different components of the mixture get adsorbed at different levels on the adsorbent.

(D) The weakly adsorbed component gets eluted slowly as compared to a strongly adsorbed component.

Option d – The weakly adsorbed component gets eluted slowly as compared to a strongly adsorbed component.

Which of the following statements is INCORRECT?

(A) The reduction of metal oxide in its solid state is easier at the temperature reduction if the metal formed is in of liquid state.

(B) In the separation of galena and sphalerite, sodium cyanide forms a layer Na₂[Zn(CN)4] on the surface of sphalerite.

(C) Copper is a better reducing agent than zinc for the extraction of gold from sodium dicyanoaurate(I).

(D) Chlorine is obtained as a by-product of the electrolysis of molten NaCl.

Option c – Copper is a better reducing agent than zinc for the extraction of gold from sodium dicyanoaurate(I).

When metal ‘M’ is treated with NaOH, a white gelatinous precipitate ‘X’ is obtained, which is soluble in excess of NaOH. Compound x when heated strongly gives an oxide that is used in chromatography as an adsorbent Identify the metal ‘M’.

(A) Iron

(B) Aluminium

(C) Zinc

(D) Calcium

Option b – Aluminium

An ore of tin containing cassiterite is concentrated by ……… method.

(A) magnetic separation

(B) froth floatation

(C) leaching

(D) gravity separation

Option d – gravity separation

In the extraction of gold, the cyanide solution acts as a leaching agent that ………..

(A) dissolves the impurities

(B) forms a soluble complex with the metal

(C) forms a cationic complex with the metal

(D) converts the metal oxide or sulphide into the metal

Option b – forms a soluble complex with the metal

The best possible extraction of aluminum from aluminum oxide is by …………

(A) electrolytic reduction of Al₂O3

(B) reduction of Al2O3 with carbon

(C) reduction of Al2O3 with sodium

(D) reduction of Al2O3 with CO

Option a – electrolytic reduction of Al₂O3

The oxidation state of the metal in the mineral haematite is ………

(A) +2

(B) +3

(C) +4

(D) +1

Option b – +3

Which of the following metals are constituents of german silver?

(A) Co, Zn, Ni

(B) Sn, Fe, Zn

(C) Cu, Zn, Ni

(D) Cu, C, Fe

Option c – Cu, Zn, Ni

Zone refining method has been employed for preparing ultra-pure samples of ………..

(A) zinc

(B) titanium

(C) indium

(D) zirconium

Option c – indium

In the leaching method, bauxite ore is fused with sodium carbonate which results in the formation of a compound ‘X’. When compound ‘X’ is warmed and neutralized by passing carbon dioxide through it, compound ‘Y’ gets precipitated out. ‘X’ and ‘Y’ respectively are

(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

Extraction of copper uses silica as an additive during smelting to remove ………..

(A) iron(II) sulphide

(B) copper(I) sulphide

(C) iron(II) oxide

(D) copper(I) oxide

Option c – iron(II) oxide

Bronze is an alloy consisting of ………..

(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%

Which of the following statements is INCORRECT?

(A) During roasting, moisture is removed from an ore.

(B) The calcination of ore is carried out in the absence of air.

(C) Concentrated zinc blende is subjected to calcination during its extraction by pyrometallurgy.

(D) Hydrometallurgical process of extraction of metals is based on complex formation.

Option c – Concentrated zinc blende is subjected to calcination during its extraction by pyrometallurgy.

Which of the following processes of extraction of metals is INCORRECTLY paired?

(A) Distillation – Extraction of zinc

(B) Zone refining – Extraction of boron

(C) Liquation Extraction of silver

(D) Electrolytic reduction Extraction of aluminum

Option c – Liquation Extraction of silver

The ore with molecular formula CuCO3-Cu(OH)2 is known as ……..

(A) copper glance

(B) cuprite

(C) chalcopyrites

(D) malachite

Option d – malachite

Which of the following forms of iron is obtained from the blast furnace?

(A) Cast iron

(B) Wrought iron

(C) Pig iron

(D) Steel

Option c – Pig iron

Xanthates are used for the concentration of which of the following ores?

(A) Siderite

(B) Copper glance

(C) Calamine

(D) Malachite

Option b – Copper glance

Which of the following impurities present in the impure copper does not pass into the electrolytic solution as ions during electrolysis?

(A) Fe

(B) Zn

(C) Au

(D) Ni

Option c – Au

Which of the following reaction does NOT occur in the blast furnace during the extraction of iron?

(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 represents a pair of carbonate minerals?

(A) Siderite, Calamine

(B) Cryolite, Malachite

(C) Calamine, Zincite

(D) Cuprite, Kaolinite

Option a – Siderite, Calamine

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Which among the following is the major impurity present in red bauxite?

(A) Fe₂O3

(B) SiO₂

(C) FeSiO3

(D) CaCO3

Option a – Fe₂O3

Generally, sulphide ores of metals are concentrated by the froth floatation process. Which of the following sulphide ore offers is an exception and is concentrated by leaching method?

(A) Galena

(B) Copper pyrites

(C) Argentite

(D) Sphalerite

Option c – Argentite

Which of the following statements is NOT TRUE?

(A) The standard Gibbs free energy is negative for the roasting of sulphide ore to oxide.

(B) Carbon and hydrogen are suitable reducing agents for metal sulphides.

(C) The roasting of the sulphide ore to the oxide is thermodynamically feasible.

(D) The standard Gibbs free energy formation for the metal sulphide is more negative than those for CS₂ and H₂S.

Option b – Carbon and hydrogen are suitable reducing agents for metal sulphides.

Which of the following is NOT a hydrated oxide mineral?

(A) Limonite

(B) Bauxite

(C) China clay

(D) Dolomite

Option d – Dolomite

Silver is obtained from an aqueous solution of sodium argentocyanide by adding ……….

(A) zinc dust

(B) copper powder

(C) sodium amalgam

(D) sodium thiosulphate

Option a – zinc dust

In which of the following methods of refining, metal is converted into its volatile compound which on decomposition gives pure metal?

(A) Fractional crystallization

(B) Distillation

(C) Liquation

(D) van Arkel method

Option d – van Arkel method

Which of the following represents the chemical formula of franklinite?

(A) ZnCO3

(B) Zn₂SiO4

(C) ZnO.Fe₂O3

(D) ZnS

Option c – ZnO.Fe₂O3

Which of the following techniques is used for refining blister copper?

(A) Distillation

(B) Zone refining

(C) Mond process

(D) Polling

Option d – Polling

In the metallurgical process, calcined ores of which of the following can be reduced by carbon?

(A) Sphalerite

(B) Calamine

(C) Copper pyrites

(D) Iron pyrites

Option b – Calamine

From gold amalgam, mercury may be recovered by ………

(A) addition of Zn metal

(B) electrolytic refining

(C) distillation

(D) dissolving Hg in HNO3

Option c – distillation

Near the top of the blast furnace at around 900 K, iron is obtained on a large scale from iron oxide by reduction with ……..

(A) C

(B) CO

(C) Al

(D) H₂

Option b – CO

The metal for which its ability to form a volatile complex is taken into account for its extraction is ………..

(A) copper

(B) nickel

(C) zinc

(D) iron

Option b – nickel

The composition of ‘copper matte’ is ……….

(A) Cu₂S + FeS

(B) Cu₂S + Cu₂O

(C) Cu₂S + FeO

(D) Cu₂O + FeS

Option a – Cu₂S + FeS

The function of fatty acids in the froth floatation process is to make the ore ……….

(A) attracted towards water

(B) water repellant

(C) soluble

(D) heavier than gangue

Option b – water repellant

Which of the following commercial form of iron contains the least amount of carbon?

(A) Cast iron

(B) Steel

(C) Wrought iron

(D) Pig iron

Option c – Wrought iron

Which of the following metal CANNOT be extracted from their ores by hydrometallurgy? ( Chapter Wise Mock Test for NEET Students )

(A) Silver

(B) Gold

(C) Zinc

(D) Copper

Option c – Zinc

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