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General Principles and Processes of Isolation of Elements JENPAS MCQ & Practice Questions
Practice General Principles and Processes of Isolation of Elements MCQs for JENPAS Chemistry with answers, explanations, chapter revision and related ChemNexa mock tests.
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General Principles and Processes of Isolation of Elements is part of JENPAS Chemistry preparation. A strong revision plan should combine concept review with exam-style questions so that definitions, relationships, calculations and exceptions are recalled accurately.
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Top 20 General Principles and Processes of Isolation of Elements MCQs with Answers
These public questions are selected from the exact General Principles and Processes of Isolation of Elements chapter, screened for topic relevance and deduplicated so repeated versions of the same MCQ are not shown publicly. Use them for quick revision, then sign in to attempt the complete test experience with more questions, results and performance review.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
1. The process of extracting a metal from its ore is broadly called:
Answer: C
Explanation: Metallurgy includes concentration, extraction and purification of metals.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
2. Minerals from which metals can be extracted economically are called:
Answer: B
Explanation: An ore is a mineral suitable for economical extraction of a metal.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
3. Gangue refers to:
Answer: A
Explanation: Gangue consists of unwanted material such as sand, clay or rocky matter.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
4. The first major step after mining an ore is often:
Answer: D
Explanation: Concentration removes gangue before extraction.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
5. Hydraulic washing is based mainly on difference in:
Answer: C
Explanation: Gravity separation uses differences in specific gravity.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
6. Magnetic separation is useful when:
Answer: B
Explanation: Differential magnetic behavior allows separation.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
7. Froth flotation is mainly used for concentration of:
Answer: A
Explanation: Sulphide ore particles are preferentially wetted by oil and carried into froth.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
8. Collectors in froth flotation mainly:
Answer: D
Explanation: Collectors make mineral particles hydrophobic.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
9. Froth stabilisers are used to:
Answer: C
Explanation: They help create a stable froth layer.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
10. Depressants in froth flotation are used to:
Answer: B
Explanation: Depressants selectively suppress flotation of one component.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
11. Calcination generally means heating an ore:
Answer: A
Explanation: Calcination is strong heating in absence or limited supply of air.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
12. Roasting generally means heating an ore:
Answer: D
Explanation: Roasting oxidises sulphide ores in excess oxygen.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
13. Carbonate ores are commonly converted to oxides by:
Answer: C
Explanation: Heating carbonates drives off CO2.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
14. Sulphide ores are commonly converted to oxides by:
Answer: B
Explanation: Roasting oxidises sulphides to oxides and SO2.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
15. A flux is added during smelting to:
Answer: A
Explanation: Flux converts gangue into a fusible slag.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
16. Slag is typically:
Answer: D
Explanation: Slag separates from molten metal due to different density and composition.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
17. For acidic gangue such as SiO2, a suitable flux is often:
Answer: C
Explanation: Acidic gangue is removed using a basic flux.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
18. For basic gangue such as CaO, a suitable flux is often:
Answer: B
Explanation: Basic gangue is removed by acidic flux.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
19. Reduction of metal oxide with carbon is feasible when:
Answer: A
Explanation: Thermodynamic feasibility depends on free-energy change for oxygen transfer.
JENPAS Chemistry · General Principles and Processes of Isolation of Elements · Very Very Hard
20. Coke is commonly used as a:
Answer: D
Explanation: Carbon reduces many metal oxides at high temperature.
General Principles and Processes of Isolation of Elements Practice Tests
Chapter 20 Isolation of Elements Set 01
Chapter-wise Practice · Very Very Hard
Chapter 20 Isolation of Elements Set 02
Chapter-wise Practice · Very Very Hard
Chapter 20 Isolation of Elements Set 03
Chapter-wise Practice · Very Very Hard
Chapter 20 Isolation of Elements Set 04
Chapter-wise Practice · Very Very Hard
Chapter 20 Isolation of Elements Set 05
Chapter-wise Practice · Very Very Hard
Chapter 20 Isolation of Elements Set 06
Chapter-wise Practice · Very Very Hard
Chapter 20 Isolation of Elements Set 07
Chapter-wise Practice · Very Very Hard
Chapter 20 Isolation of Elements Set 08
Chapter-wise Practice · Very Very Hard
Chapter 20 Isolation of Elements Set 09
Chapter-wise Practice · Very Very Hard
Chapter 20 Isolation of Elements Set 10
Chapter-wise Practice · Very Very Hard
General Principles and Processes of Isolation of Elements Frequently Asked Questions
How should I prepare General Principles and Processes of Isolation of Elements for JENPAS Chemistry?
Revise the core concepts first, make a short list of important relationships or exceptions, and then solve chapter-focused MCQs while reviewing every error.
How can ChemNexa help with General Principles and Processes of Isolation of Elements practice?
This page provides public sample questions and links to published ChemNexa tests so you can combine quick revision with structured practice.
What should I do after getting an MCQ wrong?
Identify whether the mistake came from a concept gap, calculation, unit, sign, wording or memory error, review that point, and then attempt a similar question again.
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