Chemistry - Practical Chemistry
Practise 13 WBJEE previous year questions on Practical Chemistry, compiled from papers spanning 2015 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 WBJEE tests.
Practical Chemistry has been asked in 8 of the 18 years of WBJEE papers analysed (2009–2026), with 13 questions in all. 69% of them were easy, 23% moderate and 8% tough. Most of its questions came from 2015, with 3 questions that year. In the last three years (2024–2026) it had 1 question across 3 papers, about 0.3 per paper.
The chapter's 4 topics are not weighted equally: Preliminary Tests (6 questions, 46%), Radicals (5 questions, 38%), and Identification of Acid Radicals (1 question, 8%) have been asked the most. Over the last five years the most frequent topics have been Radicals (1) and Identification of Basic Radicals (1). Radicals has produced the most tough questions (1).
- 1Which one of the following cations gives a chocolate brown precipitate upon addition of aqueous solution of ?2026Identification of Basic Radicals
- 2To a solution of colourless sodium salt, a solution of lead nitrate was added to have a white precipitate which dissolves in warm water and 2022Radicals
- 3To a solution of a colourless efflorescent sodium salt, when dilute acid is added, a colourless gas is evolved along with formation of a whi2020Preliminary Tests
- 4Which of the following chemicals may be used to identify three unlabelled beakers containing conc.NaOH, conc. and water?2019Preliminary Tests
- 5Which of the following is least thermally stable?2018Radicals
- 6dil. Colourless, suffocating gas Green colouration of solution Then, and are2018Radicals
- 7When is added to an aqueous salt solution, a white precipitate is obtained. The anion among and that was present in the solution can be2017Radicals
- 8Which of the following solutions will turn violet when a drop of lime juice is added to it?2017Radicals
- 9Which of the following arrangements is correct in respect of solubility in water?2016Preliminary Tests
- 10Compound is tested and the results are shown in the table. Which ions are present in compound2016Identification of Acid Radicals
- 11Match the flame colours of the alkaline earth metal salts in the Bunsen burner2015Preliminary Tests
- 12Consider the following salts: and . Identify the correct set of insoluble salts in water.2015Preliminary Tests
- 13Addition of sodium thiosulphate solution to a solution of silver nitrate gives as white precipitate, insoluble in water but soluble in exces2015Preliminary Tests
Frequently Asked Questions
1.How many questions are available for Practical Chemistry?
This chapter includes 13 questions compiled from WBJEE papers spanning 2015 to 2026.
2.Are these questions only from WBJEE, or from other exams too?
These are WBJEE questions specifically for the Practical Chemistry chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Practical Chemistry an important chapter for WBJEE Chemistry?
Practical Chemistry has appeared in 8 of the 18 years of WBJEE papers covered here, with 13 questions across 8 papers - about 2 per paper it appears in.
4.What is the difficulty level of Practical Chemistry questions in WBJEE?
Of the 13 questions analysed for this chapter, 69% are easy, 23% moderate and 8% tough. 2015 had the most, with 3 questions.
5.Which topics in Practical Chemistry should I focus on?
These topics have carried the most weightage in Practical Chemistry:
- Preliminary Tests - 6 questions (46%)
- Radicals - 5 questions (38%)
- Identification of Acid Radicals - 1 question (8%)
- Radicals has produced the most tough questions (1).
6.Is Practical Chemistry's weightage in WBJEE going up or down?
Across all 8 papers analysed, Practical Chemistry has averaged about 1.6 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.