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Chemistry - Practical Chemistry

Practise 42 JEE Main previous year questions on Practical Chemistry, compiled from papers spanning 2019 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty JEE Main tests.

Practical Chemistry has been asked in 7 of the 25 years of JEE Main papers analysed (2002–2026), with 42 questions in all. 21% of them were easy, 52% moderate and 26% tough. Most of its questions came from 2024, with 16 questions that year. In the last three years (2024–2026) it had 25 questions across 49 papers, about 0.5 per paper.

The chapter's 4 topics are not weighted equally: Preliminary Tests (25 questions, 60%), Identification of Basic Radicals (13 questions, 31%), and Radicals (3 questions, 7%) have been asked the most. Preliminary Tests has also led over the last five years, with 22 questions. Preliminary Tests has produced the most tough questions (5).

  1. 1Among , , and , identify the one that gets precipitated out while passing in presence of as group reagent. The highest possible oxidation st04 Apr, 2026 (E)Identification of Basic Radicals
  2. 2A salt with few drops of conc. HCl gives apple green colour in flame test. The group precipitate of the salt is dissolved in acetic acid and02 Apr, 2026 (M)Preliminary Tests
  3. 3Among and , the ion that shows positive borax bead test and with highest ionisation enthalpy is:02 Apr, 2026 (E)Preliminary Tests
  4. 4A student has been given 0.314 g of an organic compound and asked to estimate Sulphur. During the experiment, the student has obtained 0.48128 Jan, 2026 (E)Preliminary Tests
  5. 5Consider three metal chlorides and z, where x is water soluble at room temperature, y is sparingly soluble in water at room temperature and 24 Jan, 2026 (M)Identification of Basic Radicals
  6. 6In the Group analysis of cations, are precipitated respectively as24 Jan, 2026 (E)Identification of Basic Radicals
  7. 7By usual analysis, 1.00 g of compound gave 1.79 g of magnesium pyrophosphate. The percentage of phosphorus in compound is : (nearest integer21 Jan, 2026 (E)Method of preparation for Aldehydes
  8. 8When a salt is treated with sodium hydroxide solution it gives gas . On passing gas through reagent a brown coloured precipitate is formed. 07 Apr, 2025 (M)Radicals
  9. 9Choose the correct tests with respective observations. (A) \( {CuSO}_4\) (acidified with acetic acid) \(+ {K}_4 [ {Fe}( {CN})_6 ] \) Chocola02 Apr, 2025 (M)Radicals
  10. 10Formation of , a purple coloured complex formed by addition of sodium nitroprusside in sodium carbonate extract of salt indicates the presen02 Apr, 2025 (E)Radicals
  11. 11Among the following cations, the number of cations which will give characteristic precipitate in their identification tests with is _____.24 Jan, 2025 (M)Identification of Basic Radicals
  12. 12Identify and C in the given below reaction sequence B23 Jan, 2025 (E)Identification of Basic Radicals
  13. 13Consider the following test for a group-IV cation. \( {aligned} & {M}^{2+}+ {H}_2 {~S} {A} { (Black precipitate) }+ { by product } \\ & {A}+09 Apr, 2024 (E)Identification of Basic Radicals
  14. 14Match List I with List II \( {array}{|l|l|l|l|} & {List-I} & & {List-II} \\ & {(Name of the test)} & & {(Reaction sequence involved) [M is m08 Apr, 2024 (M)Preliminary Tests
  15. 15Match List I with List II \( {array}{|l|l|l|l|} & {List - I} & & {List - II} \\ & {(Precipitating reagent and conditions)} & & {(Cation)} \\06 Apr, 2024 (M)Identification of Basic Radicals
  16. 16During the detection of acidic radical present in a salt, a student gets a pale yellow precipitate soluble with difficulty in \( {NH}_4 {OH}06 Apr, 2024 (E)Identification of Basic Radicals
  17. 17Match List - I with List - II. \( {array}{ll} {List - I} & {List - II} \\ {Reaction} & {Type of redox reaction} \\ {(A) } {Li} & {(I) } 589.06 Apr, 2024 (E)Preliminary Tests
  18. 18In a borax bead test under hot condition, a metal salt (one from the given) is heated at point B of the flame, resulted in green colour salt05 Apr, 2024 (M)Preliminary Tests
  19. 19In the precipitation of the iron group (III) in qualitative analysis, ammonium chloride is added before adding ammonium hydroxide to :04 Apr, 2024 (M)Identification of Basic Radicals
  20. 20The number of white coloured salts among the following is ....... A SrSO 4 B Mg NH 4 PO 4 C BaCrO 4 D Mn ( OH ) 2 E PbSO 4 F PbCrO 4 G AgBr 01 Feb, 2024 (M)Preliminary Tests
  21. 21The compound that is white in color is31 Jan, 2024 (M)Preliminary Tests
  22. 22Molar mass of the salt from NaBr , NaNO 3 , KI and CaF 2 which does not evolve coloured vapours on heating with concentrated H 2 SO 4 is ___31 Jan, 2024 (M)Preliminary Tests
  23. 23Given below are two statements: Statement-I: The gas liberated on warming a salt with dil H 2 SO 4 , turns a piece of paper dipped in lead a30 Jan, 2024 (M)Preliminary Tests
  24. 24The Lassiagne's extract is boiled with dil HNO 3 before testing for halogens because,30 Jan, 2024 (M)Preliminary Tests
  25. 25Number of metal ions characterized by flame test among the following is _________. Sr 2 + , Ba 2 + , Ca 2 + , Cu 2 + , Zn 2 + , Co 2 + , Fe 30 Jan, 2024 (E)Preliminary Tests
  26. 26On passing a gas, ' X ', through Nessler's reagent, a brown precipitate is obtained. The gas ' X ' is29 Jan, 2024 (E)Preliminary Tests
  27. 27A reagent which gives brilliant red precipitate with Nickel ions in basic medium is29 Jan, 2024 (E)Preliminary Tests
  28. 28Oxidation state of Fe(Iron) in complex formed in Brown ring test.29 Jan, 2024 (E)Preliminary Tests
  29. 29In the wet tests for detection of various cations by precipitation, Ba 2 + cations are detected by obtaining precipitate of13 Apr, 2023 (E)Identification of Basic Radicals
  30. 30Formation of which complex, among the following, is not a confirmatory test of Pb 2 + ions06 Apr, 2023 (E)Identification of Basic Radicals
  31. 31Given below are two statements : Statement I : Upon heating a borax bead dipped in cupric sulphate in a luminous flame, the colour of the be31 Jan, 2023 (E)Preliminary Tests
  32. 32In the wet tests for identification of various cations by precipitation, which transition element cation doesn t belong to group IV in quali30 Jan, 2023 (M)Identification of Basic Radicals
  33. 33A white precipitate was formed when BaCl 2 was added to water extract of an inorganic salt. Further, a gas X with characteristic odour was r29 Jun, 2022 (E)Preliminary Tests
  34. 34Which of the following is structure of a separating funnel?27 Jun, 2022 (M)Preliminary Tests
  35. 35Match List I with List II. List-I (Anion) List-II (gas evolved on reaction with dil. H 2 SO 4 ) (A) CO 3 2 - (I) Colourless gas which turns 27 Jun, 2022 (E)Preliminary Tests
  36. 36Which statement is not true with respect to nitrate ion test?26 Jun, 2022 (M)Preliminary Tests
  37. 37During the qualitative analysis of salt with cation y 2 + , addition of a reagent X to alkaline solution of the salt gives a bright red prec24 Jun, 2022 (M)Preliminary Tests
  38. 38In the flame test of a mixture of salts, a green flame with blue centre was observed. Which one of the following cations may be present?24 Jun, 2022 (E)Preliminary Tests
  39. 39To an aqueous solution containing ions such as Al 3 + , Zn 2 + , Ca 2 + , Fe 3 + , Ni 2 + , Ba 2 + and Cu 2 + was added conc . HCl , followe27 Jul, 2021 (E)Identification of Basic Radicals
  40. 40Match List-I with List-II List-I List-II Test/Reagents/Observation(s) Species detected (a) Lassaigne s Test (i) Carbon (b) Cu(II) oxide (ii)16 Mar, 2021 (E)Preliminary Tests
  41. 41Given below are two statements: Statement I : Colourless cupric metaborate is reduced to cuprous metaborate in a luminous flame. Statement I24 Feb, 2021 (M)Preliminary Tests
  42. 42An organic compound A is oxidized with N a 2 O 2 followed by boiling with H N O 3 . The resultant solution is then treated with ammonium mol12 Apr, 2019 (M)Preliminary Tests

Frequently Asked Questions

1.How many questions are available for Practical Chemistry?

This chapter includes 42 questions compiled from JEE Main papers spanning 2019 to 2026.

2.Are these questions only from JEE Main, or from other exams too?

These are JEE Main questions specifically for the Practical Chemistry chapter. Questions from other exams like NTA Abhyas (JEE Main) or JEE Advanced are organised separately under their respective exam sections.

3.Is Practical Chemistry an important chapter for JEE Main Chemistry?

Practical Chemistry has appeared in 7 of the 25 years of JEE Main papers covered here, with 42 questions across 37 papers - about one per paper it appears in.

4.What is the difficulty level of Practical Chemistry questions in JEE Main?

Of the 42 questions analysed for this chapter, 21% are easy, 52% moderate and 26% tough. 2024 had the most, with 16 questions.

5.Which topics in Practical Chemistry should I focus on?

These topics have carried the most weightage in Practical Chemistry:

  • Preliminary Tests - 25 questions (60%)
  • Identification of Basic Radicals - 13 questions (31%)
  • Radicals - 3 questions (7%)
  • Preliminary Tests has produced the most tough questions (5).
6.Is Practical Chemistry's weightage in JEE Main going up or down?

Across all 37 papers analysed, Practical Chemistry has averaged about 1.1 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.5 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.