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Chemistry - General Principles and Processes of Isolation of Metals

Practise 6 NEST (NISER) previous year questions on General Principles and Processes of Isolation of Metals, compiled from papers spanning 2011 to 2019. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEST (NISER) tests.

General Principles and Processes of Isolation of Metals has been asked in 5 of the 16 years of NEST (NISER) papers analysed (2011–2026), with 6 questions in all. 33% of them were easy, 33% moderate and 33% tough. Most of its questions came from 2014, with 2 questions that year. In the last three years (2024–2026) it had 0 questions across 4 papers, about 0 per paper.

The chapter's 4 topics are not weighted equally: Reduction to Crude Metal (3 questions, 50%), Extraction of Metals (1 question, 17%), and Concentration of the Ore (1 question, 17%) have been asked the most. Reduction to Crude Metal has produced the most tough questions (2).

  1. 1Iron oxide can be reduced by CO and . Blast furnace is historically important as it provided iron in reasonably pure form. In Blast furnace,2019 (Session 1)Reduction to Crude Metal
  2. 2Nickel metal is purified by vapour phase refining process. This process is based on the fact that2017Refining of Crude Metal
  3. 3The ore that can be concentrated by magnetic separation method is2016Concentration of the Ore
  4. 4Magnetite is an iron oxide ore, which reacts with carbon monoxide to give iron metal and carbon dioxide. When a sample of magnetite is allow2014Reduction to Crude Metal
  5. 5In the following figure, Gibb's energy is plotted against for the formation of some oxides. The correct statement(s) is/are2014Reduction to Crude Metal
  6. 6Aluminium and copper are two important metals required on a large scale. Aluminium is extracted from its oxide ore bauxite through separatio2011Extraction of Metals

Frequently Asked Questions

1.How many questions are available for General Principles and Processes of Isolation of Metals?

This chapter includes 6 questions compiled from NEST (NISER) papers spanning 2011 to 2019.

2.Are these questions only from NEST (NISER), or from other exams too?

These are NEST (NISER) questions specifically for the General Principles and Processes of Isolation of Metals chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is General Principles and Processes of Isolation of Metals an important chapter for NEST (NISER) Chemistry?

General Principles and Processes of Isolation of Metals has appeared in 5 of the 16 years of NEST (NISER) papers covered here, with 6 questions across 5 papers - about one per paper it appears in.

4.What is the difficulty level of General Principles and Processes of Isolation of Metals questions in NEST (NISER)?

Of the 6 questions analysed for this chapter, 33% are easy, 33% moderate and 33% tough. 2014 had the most, with 2 questions.

5.Which topics in General Principles and Processes of Isolation of Metals should I focus on?

These topics have carried the most weightage in General Principles and Processes of Isolation of Metals:

  • Reduction to Crude Metal - 3 questions (50%)
  • Extraction of Metals - 1 question (17%)
  • Concentration of the Ore - 1 question (17%)
  • Reduction to Crude Metal has produced the most tough questions (2).
6.Is General Principles and Processes of Isolation of Metals's weightage in NEST (NISER) going up or down?

Across all 5 papers analysed, General Principles and Processes of Isolation of Metals has averaged about 1.2 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.