CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set D

Access the latest CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set D. We have provided free printable Class 12 Chemistry worksheets in PDF format, specifically designed for Unit 6 General Principles and Processes of Isolation of Elements. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

Unit 6 General Principles and Processes of Isolation of Elements Chemistry Practice Worksheet for Class 12

Students should use these Class 12 Chemistry chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for Unit 6 General Principles and Processes of Isolation of Elements, to help you prepare for school tests and final examination. Regular practice of these Class 12 Chemistry questions will help improve your problem-solving speed and exam accuracy for the 2026 session.

Download Class 12 Chemistry Unit 6 General Principles and Processes of Isolation of Elements Worksheet PDF

 

DEPARTMENT OF CHEMISTRY
 
General Principles and Processes of Isolation of Elements
 
1. Roasting process is applied to which of the following ores?
a) Galena            b) Iron pyrites    c) Copper glance    d) All
 
2. The chemical composition of „slag‟ formed during smelting process in the extraction of copper is
a) Cu2O + FeS    b) FeSiO3              c) CuFeS2             d) Cu2S + FeO
 
3. The froth floatation process is based upon
a) magnetic properties of gangue
b) specific gravity of ore particles
c) preferential wetting of ore particles by oil
d) preferential wetting of gangue particles by oil
 
4. Zone refining is based on the principle of
a) fractional distillation
b) fractional crystallisation
c) partition coefficient
d) chromatographic separation
 
5. Assertion –Reason type questions:
 
In the following questions a statement of assertion followed by a statement of reason is given,Choose the correct answer from the following choices.
(a) Both assertion and reason are correct statements and the reason is a correct explanation for assertion.
(b) Both assertion and reason are correct but reason is not a correct explanation for assertion.
(c) Assertion is correct but reason is incorrect.
(d) Assertion is wrong but reason is correct.
 
i. Assertion : Copper obtained after bassemerization is known as blister copper.
Reason : Blisters are produced on the surface of the metal due to escaping of dissolved SO2.
 
6. Out of C and CO, which is a better reducing agent at 673 K?
 
7. How is copper extracted with a low grade ore of it?
 
8. What is the role of zinc in extraction of Silver?
 
9. Describe the role of SiO2 in extraction of copper from copper matte and write the equation involved.
 
10. What is “copper matte”?
 
11. What are froth stabilizers? Give two examples
 
12. The graphite electrodes in the extraction of „aluminium‟ by Hall-Heroult process need to be changed frequently. Why?
 
13. Describe how the following changes are brought out:
a) Pig iron into steel.
b) Zinc oxide into zinc metal.
 
14. Write the chemical reactions involved in the process of extraction of Gold..
 
15. Differentiate between
a) Calcination and roasting
b) Electrolytic reduction and electrolytic refining
c) Flux and slag
 
16. Write the chemical reactions which take place in the following operations:
a) Electrolytic reduction of Al2O3.
b) Mond‟s process for refining of Ni.
 
17. Describe the principle involved in:
a) Electrolytic refining of metals.
b) Zone refining of metals
c) Froth floatation process
d) Chromatography
e) Vapour phase refining
 
18. Give reasons:
a) Copper matte is put in silica lined convertor.
b) Cryolite is added to alumina during electrolytic reduction.
c) Pine oil is used in the froth floatation process
 
19. a) Name the method used for the refining of titanium.
b) Reduction of metal oxide to metal becomes easier if the metal obtained is in liquid state. Why?
 
20. Write down the reactions taking place in different zones of a blast furnace during extraction of iron. How is pig iron different from cast iron?
 
21. a) Name the impurities deposit as anode mud during electrolytic refining of copper.
b) What type of metal can be refined by liquation method.
c) Name the method for refining of metals which are used as semiconductors.
 
22. Copper can be extracted by hydrometallurgy but not zinc. Explain?
 
23. What is German silver? Write its use.
 
24. Explain the following:-
a) Zinc but not copper is used for recovery of Ag from the complex[Ag(CN)2].
b) Partial roasting of sulphide ore is done in the metallurgy of copper.
c) Extraction of Cu from pyrites is difficult than that from its oxide ore through reduction.
 
25. Describe the principles of extraction of Zinc from zinc blende.
 
 
Please click on below link to download CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set D
~ Class 12 Chemistry (Old Chapters)
CBSE Class 12 Chemistry Chemistry in Everyday Life Question Bank
CBSE Class 12 Chemistry Chemistry in Everyday Life Worksheet Set A
CBSE Class 12 Chemistry Chemistry in Everyday Life Worksheet Set B
CBSE Class 12 Chemistry General principles and Processes of isolation of elements Question Bank
CBSE Class 12 Chemistry General Principles and Processes of Isolation of Elements Worksheet Set A
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set B
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set C
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set D
CBSE Class 12 Chemistry General Principles And Processes of Isolation of Elements Worksheet Set E
CBSE Class 12 Chemistry In Everyday Life Question Bank
CBSE Class 12 Chemistry In Everyday Life Worksheet Set A
CBSE Class 12 Chemistry Polymers Worksheet Set A
CBSE Class 12 Chemistry Polymers Worksheet Set B
CBSE Class 12 Chemistry Polymers Worksheet Set C
CBSE Class 12 Chemistry Polymers Worksheet Set D
CBSE Class 12 Chemistry Solid State Question Bank
CBSE Class 12 Chemistry Solid State Question Bank Set A
CBSE Class 12 Chemistry Solid State Question Bank Set B
CBSE Class 12 Chemistry Solid State Worksheet
CBSE Class 12 Chemistry Surface Chemistry Question Bank
CBSE Class 12 Chemistry Surface Chemistry Question Bank Set A
CBSE Class 12 Chemistry Surface Chemistry Question Bank Set B
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set A
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set B
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set C
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set D
CBSE Class 12 Chemistry Surface Chemistry Worksheet Set E
CBSE Class 12 Chemistry The P Block Elements Question Bank
CBSE Class 12 Chemistry The P Block Elements Question Bank Set A
CBSE Class 12 Chemistry The P Block Elements Question Bank Set B
CBSE Class 12 Chemistry The p Block Elements Worksheet Set A
CBSE Class 12 Chemistry The p Block Elements Worksheet Set B
CBSE Class 12 Chemistry The p Block Elements Worksheet Set C
CBSE Class 12 Chemistry The P Block Elements Worksheet Set E
CBSE Class 12 Chemistry The P Block Elements Worksheet Set F
CBSE Class 12 Chemistry The Solid State Worksheet Set A
CBSE Class 12 Chemistry The Solid State Worksheet Set B

Unit 6 General Principles and Processes of Isolation of Elements CBSE Class 12 Chemistry Worksheet

Students can use the Unit 6 General Principles and Processes of Isolation of Elements practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 12 Chemistry. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.

NCERT Based Questions and Solutions for Unit 6 General Principles and Processes of Isolation of Elements

Our expert team has used the official NCERT book for Class 12 Chemistry to create this practice material for students. After solving the questions our teachers have also suggested to study the NCERT solutions  which will help you to understand the best way to solve problems in Chemistry. You can get all this study material for free on studiestoday.com.

Extra Practice for Chemistry

To get the best results in Class 12, students should try the Chemistry MCQ Test for this chapter. We have also provided printable assignments for Class 12 Chemistry on our website. Regular practice will help you feel more confident and get higher marks in CBSE examinations.

Where can I download latest CBSE Practice worksheets for Class 12 Chemistry Unit 6 General Principles and Processes of Isolation of Elements

You can download the CBSE Practice worksheets for Class 12 Chemistry Unit 6 General Principles and Processes of Isolation of Elements for the latest session from StudiesToday.com

Are the Class 12 Chemistry Unit 6 General Principles and Processes of Isolation of Elements Practice worksheets available for the latest session

Yes, the Practice worksheets issued for Unit 6 General Principles and Processes of Isolation of Elements Class 12 Chemistry have been made available here for the latest academic session

Is there any charge for the Practice worksheets for Class 12 Chemistry Unit 6 General Principles and Processes of Isolation of Elements

There is no charge for the Practice worksheets for Class 12 CBSE Chemistry Unit 6 General Principles and Processes of Isolation of Elements you can download everything free

How can I improve my scores by solving questions given in Practice worksheets in Unit 6 General Principles and Processes of Isolation of Elements Class 12 Chemistry

Regular revision of practice worksheets given on studiestoday for Class 12 subject Chemistry Unit 6 General Principles and Processes of Isolation of Elements can help you to score better marks in exams

Are there any websites that offer free Practice test papers for Class 12 Chemistry Unit 6 General Principles and Processes of Isolation of Elements

Yes, studiestoday.com provides all the latest Class 12 Chemistry Unit 6 General Principles and Processes of Isolation of Elements test practice sheets with answers based on the latest books for the current academic session