Basic Analytical Techniques — Class 11 MCQs with Answers
Class 11 CBSE Chemistry · Chapter 302
40 practice questions · 20 Easy · 20 Medium · Updated
Practise the most important Class 11 CBSE Chemistry questions from Chapter 302, "Basic Analytical Techniques". You get 4 timed quizzes made from 40 NCERT-based MCQs, with answers and explanations. The questions are split into 20 Easy and 20 Medium. Warm up on the basics, then move on to the exam-level questions that set top scorers in CBSE & Maharashtra HSC Board exams, JEE Main, MHT-CET, JEE Advanced and NEET UG apart.
To score well in "Basic Analytical Techniques", focus on reactions, key concepts and careful numericals. Each MCQ here is timed and uses exam-style marking (+4 correct, −1 wrong, 0 skipped). This trains you to stay accurate under time pressure, as real papers need. Every question has a short explanation, so a wrong answer becomes a quick lesson. It is the fastest way to fix gaps before a test.
Use this chapter for focused revision. Start with the Easy set to check your basics on Basic Analytical Techniques, then move to Medium to practise applying them. Your accuracy, streaks and XP save automatically. This chapter also adds to your overall Class 11 Chemistry mastery score. 6 sample questions are solved in full below, with the answer and a worked explanation. Sign in free to start practising.
Key concepts: Basic Analytical Techniques (Class 11 Chemistry)
Before any substance can be analysed it must first be separated from the mixture it occurs in and then shown to be pure. This chapter surveys the standard laboratory techniques for doing exactly that — filtration and crystallisation for solids, sublimation for solids that vaporise directly, the four kinds of distillation (simple, fractional, steam and reduced-pressure) for liquids, solvent extraction using a separating funnel, and chromatography in its paper, thin-layer and column forms — and then sets out the criteria of purity, namely a sharp melting point for a solid and a constant boiling point for a liquid.
- Filtration
- Separates an insoluble solid from a liquid by passing the mixture through filter paper: the solid held back is the residue and the liquid collected below is the filtrate. Suction through a Buchner funnel speeds it up for fine or gelatinous precipitates.
- Crystallisation
- Purifies a solid by dissolving it in a minimum of hot solvent and cooling the saturated solution, so that the desired substance separates as crystals while the small amount of impurity stays behind in the mother liquor. It works best when solubility rises steeply with temperature.
- Sublimation
- The direct conversion of a solid into vapour on heating, and back to solid on cooling, without an intervening liquid state. It separates a sublimable component such as camphor, naphthalene, iodine or ammonium chloride from a non-sublimable one such as common salt.
- Simple distillation
- Boils a liquid and condenses its vapour back in a Liebig condenser. It is suitable when the impurity is non-volatile, or when a second liquid differs in boiling point by a wide margin, so that one component vaporises far more readily than the other.
Basic Analytical Techniques — important questions & MCQs with answers (Class 11 Chemistry)
6 solved questions from this chapter's difficulty levels, each with its answer and explanation. The other 34 are timed and scored when you sign in.
- Q1Easy
Filtration is used to separate
A.two miscible liquidsB.two gases of different densitiesC.a dissolved solid from its solutionD.an insoluble solid from a liquid✓ CorrectAnswer: D. an insoluble solid from a liquid
Explanation: Filter paper holds back particles that are not dissolved, so filtration separates an insoluble solid (residue) from the liquid (filtrate).
- Q2Easy
Sublimation is the process in which a substance changes
A.directly from the solid state to the vapour state✓ CorrectB.from the solid state to the liquid stateC.from the liquid state to the vapour stateD.from the vapour state to the liquid stateAnswer: A. directly from the solid state to the vapour state
Explanation: In sublimation the solid passes straight into vapour on heating, without an intermediate liquid stage.
- Q3Easy
The apparatus used to carry out solvent extraction of a compound from an aqueous solution is a
A.fractionating columnB.Liebig condenserC.separating funnel✓ CorrectD.sublimation dishAnswer: C. separating funnel
Explanation: The two immiscible layers settle in a separating funnel and the lower layer is run out through the stopcock.
- Q4Medium
A suspension of chalk powder in water is best separated by
A.filtration✓ CorrectB.fractional distillationC.sublimationD.paper chromatographyAnswer: A. filtration
Explanation: Chalk is insoluble in water, so the particles are retained by the filter paper as residue while the water passes through as filtrate.
- Q5Medium
A mixture of camphor and sodium chloride is best separated by
A.filtrationB.fractional distillationC.solvent extraction with waterD.sublimation✓ CorrectAnswer: D. sublimation
Explanation: Camphor sublimes on gentle heating and condenses on a cool surface, while sodium chloride does not sublime and is left behind.
- Q6Medium
An organic compound dissolved in water is extracted by shaking the solution with ether because ether
A.reacts chemically with the organic compoundB.has a higher boiling point than waterC.dissolves completely in waterD.is immiscible with water and dissolves the compound much better✓ CorrectAnswer: D. is immiscible with water and dissolves the compound much better
Explanation: The compound distributes itself in favour of the ether layer, and because ether does not mix with water the two layers can be separated in a separating funnel.
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Start this chapter free →Basic Analytical Techniques — FAQs
What are the key concepts in Class 11 Chemistry Basic Analytical Techniques?+
Before any substance can be analysed it must first be separated from the mixture it occurs in and then shown to be pure. This chapter surveys the standard laboratory techniques for doing exactly that — filtration and crystallisation for solids, sublimation for solids that vaporise directly, the four kinds of distillation (simple, fractional, steam and reduced-pressure) for liquids, solvent extraction using a separating funnel, and chromatography in its paper, thin-layer and column forms — and then sets out the criteria of purity, namely a sharp melting point for a solid and a constant boiling point for a liquid. Key ideas include Filtration, Crystallisation, Sublimation, Simple distillation.
What does Class 11 Chemistry Chapter 302 (Basic Analytical Techniques) cover on XamBaaz?+
It has 40 NCERT-based MCQs on "Basic Analytical Techniques": 20 Easy and 20 Medium. Together they make 4 timed quizzes, and you never get the same set twice. Every question has an instant explanation. They help you prepare for CBSE & Maharashtra HSC Board exams, JEE Main, MHT-CET, JEE Advanced and NEET UG.
Are these "Basic Analytical Techniques" questions free to practise?+
Yes. Sign in with Google to practise "Basic Analytical Techniques" free. Full unlimited access is ₹999/year on a launch offer until 1 December 2026. No chapter is charged separately.
How should I revise "Basic Analytical Techniques" for the exam?+
Start with the Easy quiz to check your basics, then try Medium to practise applying them. There are 4 timed quizzes on this chapter, so you can come back for a fresh set instead of one you have seen. Read each explanation, retry the questions you miss, and track your accuracy until it stays high.
Are these "Basic Analytical Techniques" MCQs available with answers?+
Yes. 6 sample questions are shown here in full, each with the correct option and a step-by-step "Why" explanation. Sign in free with Google to start practising, with instant scoring.
Is there negative marking in the "Basic Analytical Techniques" quizzes?+
Yes. The timed quizzes use exam-style marking: +4 for a right answer, −1 for a wrong one and 0 for a skip, the same negative marking as JEE Main, JEE Advanced and NEET UG. MHT-CET and CBSE board papers have no negative marking. Our mocks for those are scored their way.
What are the important questions from Basic Analytical Techniques (Class 11 Chemistry)?+
The questions that matter most test Filtration, Crystallisation, Sublimation, Simple distillation. This page shows 6 solved important MCQs with answers and explanations; all 40 questions on the chapter are available as timed quizzes once you sign in.
Is there an online quiz for Basic Analytical Techniques?+
Yes — Class 11 Chemistry Basic Analytical Techniques has timed online quizzes at Easy and Medium levels, with instant scoring and a worked explanation on every question. The first quiz on the chapter is free.