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. Distillation is very useful for low boiling metals like____.

(d)gold and silver

(a)zinc and mercury

(c)iron and copper

(b)sodium and magnesium

2 / 10

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

are light

have a constant electrical charge

have the surface which is not wetted easily

are insoluble

3 / 10

3. Mac Arthur process is used for the extraction of:

Au

Zn

Cu

Pt

4 / 10

4. While extracting an element from its ore, the ore is grounded and leached with dil. potassium cyanide solution to form the soluble product potassium argento cyanide. The element is

Lead

Chromium

Silver

Manganese

5 / 10

5. Process followed before reduction of carbonate ore is

roasting

polling

calcination

liquation

6 / 10

6. During the formation of metal oxides from metal and oxygen, what happens to the change in Gibbs free energy with the little increase of temperature?

(d)Insufficient data

(b)Decreases

(c)Remains same

(a)Increases

7 / 10

7. Cassiterite is an ore of

Mn

Sb

Sn

Ni

8 / 10

8. In the electrolysis of aluminium, the anodes in the cell have to be replaced frequently because ____.

(c)they get coated in a thick crust of solid Al₂O₃.

(b)they are burned away by O reacting with the carbon anode to form CO₂ gas.

(d)the Al formed on them has to be removed.

(a)they melt in the high temperature inside the cell.

9 / 10

9. Flux is used to remove :

acidic and basic both impurities

acidic impurities

basic impurities

all types of impurities

10 / 10

10. 2CuFeS ₂ + O ₂ → Cu ₂ S + 2FeS +SO ₂ Which process of metallurgy of copper is represented by above equation?

Concentration

Roasting

Purification

Reduction

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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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