Class 12th Chemistry Chapter General Principles and Processes of Isolation of Elements Free MCQ Test Quiz

Prepare for Class 12 Chemistry exams with our free test quiz on Isolation of Elements! Learn about extraction principles, concentration, oxidation, reduction, electrolytic methods, and refining. Explore the extraction of aluminium, copper, zinc, and iron. Test your knowledge now!

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12th Chemistry: General Principles and Processes of Isolation of Elements

1 / 10

1. Ellingham diagrams are plots drawn between ____ and ____ for formation of oxides.

(a)Temperature and change in enthalpy

(d)Change in enthalpy and pressure

(b)Change in Gibbs free energy and Pressure

(c)Change in Gibbs free energy and temperature

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2. In the extraction of copper from its sulphide ore, the metal is formed by reduction of Cu₂O with :

Cu₂S

SO₂

FeS

CO

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3. When a metal is to be extracted from its ore and the gangue associated with the ore is silica, then

Neither of them is needed

an acidic flux is needed

both acidic and basic fluxes are needed

a basic flux is needed

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4. Which one of the following is a mineral of iron ?

Cassiterite

Malachite

Magnetite

Pyrolusite

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5. In the froth flotation process of concentration of ores, the ore particles float because they:

have a constant electrical charge

are insoluble

are light

have the surface which is not wetted easily

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6. Which one of the following ores is best concentrated by froth-flotation method?

Galena

Cassiterite

Magnetite

Malachite

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7. Which of the following metal is leached by cyanide process?

Al

Cu

Na

Ag

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8. Which of the following is chalcopyrite?

KMgCl₃.6H₂O

Al₂O₃.2H₂O

FeS₂

CuFeS₂

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9. Which of the following fluxes is used to remove acidic impurities in metallurgical process?

Lime stone

Sodium carbonate

Silica

Sodium chloride

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10. Froth floatation process is used for the metallurgy of

chloride ores

oxide ores

sulphide ores

amalgams

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Chapter-Wise Chemistry Mock Test Quiz: General Principles and Processes of Isolation of Elements (Class 12)

⚙️ Class 12 Chemistry Chapter 6 Free Test Quiz: Master the Extraction of Elements!

Are you preparing for your Class 12 Chemistry exams? Test your knowledge with our free online quiz on Chapter 6 – General Principles and Processes of Isolation of Elements! This chapter covers vital concepts like concentration, oxidation, reduction, electrolytic methods, and refining.

? Key Concepts Covered:

• Concentration of ores: Techniques to separate valuable minerals from gangue

• Oxidation and reduction: Understanding their role in metal extraction

• Electrolytic methods: Using electricity to isolate elements

• Refining: Processes that increase metal purity for industrial use

⚙️ Metals Explored:

• Aluminium

• Copper

• Zinc

• Iron

Discover their natural occurrence, extraction methods, and importance in various industries.

? Why Take This Quiz?
Whether your goal is to score high or deepen your grasp of chemistry, this free Class 12 Chemistry Chapter 6 quiz is an ideal way to reinforce key concepts. Take the quiz now and strengthen your understanding of element isolation!

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