{"id":7108,"date":"2026-10-24T05:16:40","date_gmt":"2026-10-24T05:16:40","guid":{"rendered":"https:\/\/ksquareinstitute.in\/blog\/?p=7108"},"modified":"2026-10-24T05:16:41","modified_gmt":"2026-10-24T05:16:41","slug":"practical-chemistry-neet-pyq-analysis","status":"publish","type":"post","link":"https:\/\/ksquareinstitute.in\/blog\/practical-chemistry-neet-pyq-analysis\/","title":{"rendered":"Practical Chemistry NEET PYQ Analysis: Salt Analysis, Organic Tests and Titrations"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong>Quick answer:<\/strong> A practical chemistry NEET PYQ analysis shows that this is a new and growing area. Practical chemistry was added to the NEET syllabus in 2024, and NTA has asked one question on it in each of 2024, 2025 and 2026: the group classification of cations twice and the test for the acetate ion once. The syllabus also covers Lassaigne&#8217;s test for N, S and halogens, functional group tests, the preparation of compounds such as Mohr&#8217;s salt and acetanilide, and KMnO\u2084 titrations. Expect at least one question every year.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"432\" src=\"https:\/\/ksquareinstitute.in\/blog\/wp-content\/uploads\/2026\/10\/Practical-Chemistry-NEET-PYQ-Analysis-Salt-Analysis-Lab-1024x432.jpg\" alt=\"Practical chemistry NEET PYQ analysis showing test tubes with coloured precipitates, a burette titration and green crystals\" class=\"wp-image-7109\" srcset=\"https:\/\/ksquareinstitute.in\/blog\/wp-content\/uploads\/2026\/10\/Practical-Chemistry-NEET-PYQ-Analysis-Salt-Analysis-Lab-1024x432.jpg 1024w, https:\/\/ksquareinstitute.in\/blog\/wp-content\/uploads\/2026\/10\/Practical-Chemistry-NEET-PYQ-Analysis-Salt-Analysis-Lab-300x127.jpg 300w, https:\/\/ksquareinstitute.in\/blog\/wp-content\/uploads\/2026\/10\/Practical-Chemistry-NEET-PYQ-Analysis-Salt-Analysis-Lab-768x324.jpg 768w, https:\/\/ksquareinstitute.in\/blog\/wp-content\/uploads\/2026\/10\/Practical-Chemistry-NEET-PYQ-Analysis-Salt-Analysis-Lab-1536x648.jpg 1536w, https:\/\/ksquareinstitute.in\/blog\/wp-content\/uploads\/2026\/10\/Practical-Chemistry-NEET-PYQ-Analysis-Salt-Analysis-Lab.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">This guide covers what NTA has asked, what it is likely to ask next and the tables you must know, with PYQ-pattern questions. Many of these tests come straight from other chapters, so our <a href=\"https:\/\/ksquareinstitute.in\/blog\/p-block-neet-pyq-analysis\">p-Block PYQ analysis<\/a> and our <a href=\"https:\/\/ksquareinstitute.in\/blog\/coordination-compounds-neet-pyq-analysis\">Coordination Compounds PYQ analysis<\/a> are useful companions.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Want to see the real questions first? <a href=\"https:\/\/ksquareinstitute.com\/questions\/neet-previous-year-questions\/chemistry\/practical-chemistry-qualitative-analysis\/questions\/\" target=\"_blank\" rel=\"noopener\"><strong>Solve the practical chemistry PYQs<\/strong><\/a> for free, then use this guide to cover the rest of the syllabus.<\/p>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Table of Contents<\/h2><nav><ul><li><a href=\"#why-practical-chemistry-matters-now\">Why Practical Chemistry Matters Now<\/a><\/li><li><a href=\"#practical-chemistry-neet-pyq-analysis-the-syllabus-areas\">Practical Chemistry NEET PYQ Analysis: The Syllabus Areas<\/a><\/li><li><a href=\"#salt-analysis-cation-groups\">Salt Analysis: Cation Groups<\/a><\/li><li><a href=\"#salt-analysis-anion-tests\">Salt Analysis: Anion Tests<\/a><\/li><li><a href=\"#lassaignes-test-for-n-s-and-halogens\">Lassaigne&#8217;s Test for N, S and Halogens<\/a><\/li><li><a href=\"#functional-group-tests\">Functional Group Tests<\/a><\/li><li><a href=\"#preparations-and-titrations\">Preparations and Titrations<\/a><\/li><li><a href=\"#worked-pyq-pattern-questions\">Worked PYQ-Pattern Questions<\/a><\/li><li><a href=\"#common-traps-in-this-chapter\">Common Traps in This Chapter<\/a><\/li><li><a href=\"#practise-every-practical-chemistry-pyq\">Practise Every Practical Chemistry PYQ<\/a><\/li><li><a href=\"#conclusion\">Conclusion<\/a><\/li><li><a href=\"#\u2753-faq\">FAQ<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 id=\"why-practical-chemistry-matters-now\" class=\"wp-block-heading\">Why Practical Chemistry Matters Now<\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-white-background-color has-background has-border-color has-black-border-color\" style=\"border-width:2px\"><thead><tr><th>Year<\/th><th>What NTA asked<\/th><\/tr><\/thead><tbody><tr><td>NEET 2024<\/td><td>Group-wise classification of cations<\/td><\/tr><tr><td>NEET 2025<\/td><td>Matching Co\u00b2\u207a, Mg\u00b2\u207a, Pb\u00b2\u207a and Al\u00b3\u207a to their analytical groups<\/td><\/tr><tr><td>NEET 2026<\/td><td>Detection of the acetate ion<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The 2025 question is in the practical chemistry set linked above; the 2024 question is in the <a href=\"https:\/\/ksquareinstitute.com\/questions\/neet-previous-year-questions\/chemistry\/salt-analysis-qualitative-inorganic-analysis\/questions\/\" target=\"_blank\" rel=\"noopener\">salt analysis PYQ set<\/a>, and the 2026 question is in the <a href=\"https:\/\/ksquareinstitute.com\/questions\/neet-previous-year-questions\/chemistry\/qualitative-inorganic-analysis\/questions\/\" target=\"_blank\" rel=\"noopener\">qualitative inorganic analysis set<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">With so few NEET chemistry PYQs in this area, you cannot rely on past questions alone. Most tests, though, are reactions you already study elsewhere: the FeCl\u2083 and bromine water tests in our <a href=\"https:\/\/ksquareinstitute.in\/blog\/alcohols-phenols-ethers-neet-pyq-analysis\">Alcohols and Phenols PYQ analysis<\/a>, and the KMnO\u2084 chemistry in our <a href=\"https:\/\/ksquareinstitute.in\/blog\/redox-reactions-neet-pyq-analysis\">Redox Reactions PYQ analysis<\/a>. The safest plan is to learn the full syllabus list below, because the next question could come from any of it. To see where it sits among other chapters, check the <a href=\"https:\/\/ksquareinstitute.in\/blog\/neet-2027-syllabus-chapter-weightage\">NEET 2027 chapter weightage<\/a>.<\/p>\n\n\n\n<h2 id=\"practical-chemistry-neet-pyq-analysis-the-syllabus-areas\" class=\"wp-block-heading\">Practical Chemistry NEET PYQ Analysis: The Syllabus Areas<\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-white-background-color has-background has-border-color has-black-border-color\" style=\"border-width:2px\"><thead><tr><th>Area<\/th><th>What it covers<\/th><\/tr><\/thead><tbody><tr><td>Salt analysis<\/td><td>Cations: Pb\u00b2\u207a, Cu\u00b2\u207a, Al\u00b3\u207a, Fe\u00b3\u207a, Zn\u00b2\u207a, Ni\u00b2\u207a, Ca\u00b2\u207a, Ba\u00b2\u207a, Mg\u00b2\u207a, NH\u2084\u207a; anions: CO\u2083\u00b2\u207b, S\u00b2\u207b, SO\u2084\u00b2\u207b, NO\u2083\u207b, NO\u2082\u207b, Cl\u207b, Br\u207b, I\u207b<\/td><\/tr><tr><td>Detection of elements<\/td><td>Nitrogen, sulphur and halogens in organic compounds (Lassaigne&#8217;s test)<\/td><\/tr><tr><td>Functional group tests<\/td><td>Alcoholic and phenolic \u2013OH, aldehydes and ketones, carboxylic acids, amino groups<\/td><\/tr><tr><td>Preparations<\/td><td>Inorganic: Mohr&#8217;s salt, potash alum; organic: acetanilide, p-nitroacetanilide, aniline yellow, iodoform<\/td><\/tr><tr><td>Titrations<\/td><td>Acid\u2013base titrations and indicators; oxalic acid vs KMnO\u2084; Mohr&#8217;s salt vs KMnO\u2084<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 id=\"salt-analysis-cation-groups\" class=\"wp-block-heading\">Salt Analysis: Cation Groups<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Salt analysis<\/strong> questions have come up two years in a row, so learn this table first:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-white-background-color has-background has-border-color has-black-border-color\" style=\"border-width:2px\"><thead><tr><th>Group<\/th><th>Cations<\/th><th>Group reagent<\/th><th>Precipitate<\/th><\/tr><\/thead><tbody><tr><td>Zero<\/td><td>NH\u2084\u207a<\/td><td>NaOH, heated (NH\u2083 gas released)<\/td><td>\u2014<\/td><\/tr><tr><td>I<\/td><td>Pb\u00b2\u207a<\/td><td>Dilute HCl<\/td><td>PbCl\u2082 (white)<\/td><\/tr><tr><td>II<\/td><td>Pb\u00b2\u207a, Cu\u00b2\u207a<\/td><td>H\u2082S gas in dilute HCl<\/td><td>Sulphides (CuS black)<\/td><\/tr><tr><td>III<\/td><td>Al\u00b3\u207a, Fe\u00b3\u207a<\/td><td>NH\u2084OH in the presence of NH\u2084Cl<\/td><td>Al(OH)\u2083 white gelatinous; Fe(OH)\u2083 reddish brown<\/td><\/tr><tr><td>IV<\/td><td>Zn\u00b2\u207a, Ni\u00b2\u207a, Co\u00b2\u207a, Mn\u00b2\u207a<\/td><td>H\u2082S gas in ammoniacal solution<\/td><td>ZnS white; NiS and CoS black<\/td><\/tr><tr><td>V<\/td><td>Ba\u00b2\u207a, Ca\u00b2\u207a, Sr\u00b2\u207a<\/td><td>(NH\u2084)\u2082CO\u2083 in the presence of NH\u2084OH<\/td><td>White carbonates<\/td><\/tr><tr><td>VI<\/td><td>Mg\u00b2\u207a<\/td><td>Na\u2082HPO\u2084<\/td><td>White Mg(NH\u2084)PO\u2084<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Pb\u00b2\u207a appears in both Group I and Group II, because PbCl\u2082 is slightly soluble and some lead stays in solution.<\/p>\n\n\n\n<h3 id=\"confirmatory-tests-for-cations\" class=\"wp-block-heading\">Confirmatory Tests for Cations<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-white-background-color has-background has-border-color has-black-border-color\" style=\"border-width:2px\"><thead><tr><th>Cation<\/th><th>Confirmatory test<\/th><\/tr><\/thead><tbody><tr><td>NH\u2084\u207a<\/td><td>Nessler&#8217;s reagent gives a brown precipitate<\/td><\/tr><tr><td>Pb\u00b2\u207a<\/td><td>KI gives a yellow precipitate of PbI\u2082; K\u2082CrO\u2084 gives yellow PbCrO\u2084<\/td><\/tr><tr><td>Cu\u00b2\u207a<\/td><td>Excess NH\u2084OH gives a deep blue solution; K\u2084[Fe(CN)\u2086] gives a chocolate-brown precipitate<\/td><\/tr><tr><td>Fe\u00b3\u207a<\/td><td>K\u2084[Fe(CN)\u2086] gives Prussian blue; KSCN gives a blood-red colour<\/td><\/tr><tr><td>Al\u00b3\u207a<\/td><td>Blue lake test with blue litmus<\/td><\/tr><tr><td>Zn\u00b2\u207a<\/td><td>K\u2084[Fe(CN)\u2086] gives a bluish-white precipitate<\/td><\/tr><tr><td>Ni\u00b2\u207a<\/td><td>Dimethylglyoxime gives a bright red precipitate<\/td><\/tr><tr><td>Ba\u00b2\u207a<\/td><td>Yellow precipitate with K\u2082CrO\u2084; apple-green flame<\/td><\/tr><tr><td>Ca\u00b2\u207a<\/td><td>White precipitate with ammonium oxalate; brick-red flame<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 id=\"salt-analysis-anion-tests\" class=\"wp-block-heading\">Salt Analysis: Anion Tests<\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-white-background-color has-background has-border-color has-black-border-color\" style=\"border-width:2px\"><thead><tr><th>Anion<\/th><th>Test and observation<\/th><\/tr><\/thead><tbody><tr><td>CO\u2083\u00b2\u207b<\/td><td>Dilute H\u2082SO\u2084 gives brisk effervescence of CO\u2082, which turns lime water milky<\/td><\/tr><tr><td>S\u00b2\u207b<\/td><td>Dilute H\u2082SO\u2084 gives H\u2082S (rotten-egg smell), which turns lead acetate paper black; sodium nitroprusside gives a violet colour<\/td><\/tr><tr><td>SO\u2084\u00b2\u207b<\/td><td>BaCl\u2082 gives a white precipitate insoluble in HCl<\/td><\/tr><tr><td>NO\u2082\u207b<\/td><td>Dilute H\u2082SO\u2084 gives brown fumes<\/td><\/tr><tr><td>NO\u2083\u207b<\/td><td><strong>Brown ring test<\/strong>: FeSO\u2084 and concentrated H\u2082SO\u2084 form a brown ring of [Fe(H\u2082O)\u2085NO]\u00b2\u207a<\/td><\/tr><tr><td>Cl\u207b<\/td><td>AgNO\u2083 gives a white precipitate soluble in NH\u2084OH; chromyl chloride test gives orange-red vapours<\/td><\/tr><tr><td>Br\u207b<\/td><td>AgNO\u2083 gives a pale yellow precipitate, partly soluble in NH\u2084OH<\/td><\/tr><tr><td>I\u207b<\/td><td>AgNO\u2083 gives a yellow precipitate insoluble in NH\u2084OH<\/td><\/tr><tr><td>CH\u2083COO\u207b<\/td><td>Dilute H\u2082SO\u2084 gives a vinegar smell; neutral FeCl\u2083 gives a deep red colour<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 id=\"lassaignes-test-for-n-s-and-halogens\" class=\"wp-block-heading\">Lassaigne&#8217;s Test for N, S and Halogens<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The organic compound is fused with sodium metal. N, S and halogens turn into NaCN, Na\u2082S and NaX, which dissolve in water to give the <strong>sodium fusion extract<\/strong>. <strong>Lassaigne&#8217;s test<\/strong> then works as follows:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-white-background-color has-background has-border-color has-black-border-color\" style=\"border-width:2px\"><thead><tr><th>Element<\/th><th>Test<\/th><th>Result<\/th><\/tr><\/thead><tbody><tr><td>Nitrogen<\/td><td>Boil with FeSO\u2084, then acidify<\/td><td>Prussian blue, Fe\u2084[Fe(CN)\u2086]\u2083<\/td><\/tr><tr><td>Sulphur<\/td><td>Sodium nitroprusside<\/td><td>Violet colour<\/td><\/tr><tr><td>Sulphur<\/td><td>Lead acetate with acetic acid<\/td><td>Black precipitate of PbS<\/td><\/tr><tr><td>N and S together<\/td><td>FeCl\u2083<\/td><td>Blood-red colour (from NaSCN)<\/td><\/tr><tr><td>Halogens<\/td><td>Boil with HNO\u2083 first, then add AgNO\u2083<\/td><td>White (Cl), pale yellow (Br) or yellow (I) precipitate<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">The extract is boiled with nitric acid before testing for halogens so that any NaCN or Na\u2082S is destroyed and does not interfere.<\/p>\n\n\n\n<h2 id=\"functional-group-tests\" class=\"wp-block-heading\">Functional Group Tests<\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-white-background-color has-background has-border-color has-black-border-color\" style=\"border-width:2px\"><thead><tr><th>Group<\/th><th>Test<\/th><th>Positive result<\/th><\/tr><\/thead><tbody><tr><td>Alcoholic \u2013OH<\/td><td>Ceric ammonium nitrate<\/td><td>Red colour<\/td><\/tr><tr><td>Phenolic \u2013OH<\/td><td>Neutral FeCl\u2083<\/td><td>Violet colour<\/td><\/tr><tr><td>Phenol<\/td><td>Bromine water<\/td><td>White precipitate of 2,4,6-tribromophenol<\/td><\/tr><tr><td>Aldehydes and ketones<\/td><td>2,4-DNP reagent<\/td><td>Yellow or orange precipitate<\/td><\/tr><tr><td>Aldehydes only<\/td><td>Tollens&#8217; reagent<\/td><td>Silver mirror<\/td><\/tr><tr><td>Aliphatic aldehydes<\/td><td>Fehling&#8217;s solution<\/td><td>Red precipitate of Cu\u2082O<\/td><\/tr><tr><td>Carboxylic acids<\/td><td>NaHCO\u2083<\/td><td>Brisk effervescence of CO\u2082<\/td><\/tr><tr><td>Primary amines<\/td><td>Carbylamine test (CHCl\u2083 + alcoholic KOH)<\/td><td>Foul-smelling isocyanide<\/td><\/tr><tr><td>Aromatic primary amines<\/td><td>Azo dye test with \u03b2-naphthol<\/td><td>Orange-red dye<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Functional group tests<\/strong> overlap with the Organic chapters, so revise the chemistry behind each colour change there.<\/p>\n\n\n\n<h2 id=\"preparations-and-titrations\" class=\"wp-block-heading\">Preparations and Titrations<\/h2>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-white-background-color has-background has-border-color has-black-border-color\" style=\"border-width:2px\"><thead><tr><th>Preparation<\/th><th>Key point<\/th><\/tr><\/thead><tbody><tr><td>Mohr&#8217;s salt, FeSO\u2084\u00b7(NH\u2084)\u2082SO\u2084\u00b76H\u2082O<\/td><td>Dilute H\u2082SO\u2084 is added to stop the hydrolysis of FeSO\u2084; gives light green crystals<\/td><\/tr><tr><td>Potash alum, K\u2082SO\u2084\u00b7Al\u2082(SO\u2084)\u2083\u00b724H\u2082O<\/td><td>Crystallised from equimolar solutions<\/td><\/tr><tr><td>Acetanilide<\/td><td>Acetylation of aniline with acetic anhydride<\/td><\/tr><tr><td>p-Nitroacetanilide<\/td><td>Nitration of acetanilide with concentrated HNO\u2083 and H\u2082SO\u2084 in the cold; the para product is the main one<\/td><\/tr><tr><td>Aniline yellow (p-aminoazobenzene)<\/td><td>Diazotisation of aniline, then coupling with aniline<\/td><\/tr><tr><td>Iodoform<\/td><td>Ethanol or acetone with iodine and an alkali; yellow crystals<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Titration facts NTA can ask:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Phenolphthalein<\/strong> (colourless to pink, pH 8.2\u201310) suits titrations with a strong base; <strong>methyl orange<\/strong> (pH 3.1\u20134.4) suits a strong acid with a weak base.<\/li>\n\n\n\n<li><strong>KMnO\u2084 acts as its own indicator<\/strong>: the end point is the first permanent light pink colour.<\/li>\n\n\n\n<li>KMnO\u2084 titrations use <strong>dilute H\u2082SO\u2084<\/strong>, not HCl, because KMnO\u2084 would oxidise HCl to chlorine.<\/li>\n\n\n\n<li>The <strong>oxalic acid<\/strong> solution is warmed to about 60\u201370 \u00b0C before titration; the <strong>Mohr&#8217;s salt<\/strong> titration is done at room temperature, because heating would oxidise Fe\u00b2\u207a in air.<\/li>\n\n\n\n<li>2MnO\u2084\u207b + 5C\u2082O\u2084\u00b2\u207b + 16H\u207a \u2192 2Mn\u00b2\u207a + 10CO\u2082 + 8H\u2082O, and MnO\u2084\u207b + 5Fe\u00b2\u207a + 8H\u207a \u2192 Mn\u00b2\u207a + 5Fe\u00b3\u207a + 4H\u2082O.<\/li>\n<\/ul>\n\n\n\n<h2 id=\"worked-pyq-pattern-questions\" class=\"wp-block-heading\">Worked PYQ-Pattern Questions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q1. Match the cations with their analytical groups: Co\u00b2\u207a, Mg\u00b2\u207a, Pb\u00b2\u207a, Al\u00b3\u207a.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Answer: Co\u00b2\u207a \u2013 Group IV, Mg\u00b2\u207a \u2013 Group VI, Pb\u00b2\u207a \u2013 Group I, Al\u00b3\u207a \u2013 Group III.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q2. The group reagent for Group III cations is:<\/strong> (a) Dilute HCl (b) H\u2082S in dilute HCl (c) NH\u2084OH in the presence of NH\u2084Cl (d) (NH\u2084)\u2082CO\u2083<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Answer: (c).<\/strong> NH\u2084Cl suppresses the ionisation of NH\u2084OH, so only Group III hydroxides precipitate.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q3. A salt gives a vinegar smell with dilute H\u2082SO\u2084 and a deep red colour with neutral FeCl\u2083. The anion is:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Answer: Acetate (CH\u2083COO\u207b).<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q4. In Lassaigne&#8217;s test, nitrogen is confirmed by the formation of:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Answer: Prussian blue, Fe\u2084[Fe(CN)\u2086]\u2083.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q5. Why is dilute H\u2082SO\u2084 used, and not HCl, in KMnO\u2084 titrations?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Answer:<\/strong> KMnO\u2084 would oxidise HCl to chlorine, using up extra KMnO\u2084 and giving a wrong result.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q6. Which test distinguishes an aldehyde from a ketone?<\/strong> (a) 2,4-DNP test (b) Tollens&#8217; test (c) Iodoform test (d) Sodium bicarbonate test<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Answer: (b) Tollens&#8217; test.<\/strong> Aldehydes give a silver mirror; ketones do not. Both give a positive 2,4-DNP test.<\/p>\n\n\n\n<h2 id=\"common-traps-in-this-chapter\" class=\"wp-block-heading\">Common Traps in This Chapter<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Putting Al\u00b3\u207a in Group II or Mg\u00b2\u207a in Group V<\/li>\n\n\n\n<li>Forgetting that Pb\u00b2\u207a appears in both Group I and Group II<\/li>\n\n\n\n<li>Testing for halogens without boiling the extract with HNO\u2083 first<\/li>\n\n\n\n<li>Using HCl to acidify KMnO\u2084 titrations<\/li>\n\n\n\n<li>Heating the Mohr&#8217;s salt solution before titrating it with KMnO\u2084<\/li>\n\n\n\n<li>Saying ketones give a silver mirror with Tollens&#8217; reagent<\/li>\n<\/ul>\n\n\n\n<h2 id=\"practise-every-practical-chemistry-pyq\" class=\"wp-block-heading\">Practise Every Practical Chemistry PYQ<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">This practical chemistry NEET PYQ analysis covers both the questions NTA has asked and the areas it has not reached yet. Practise the real questions free:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 <strong><a href=\"https:\/\/ksquareinstitute.com\/questions\/neet-previous-year-questions\/chemistry\/practical-chemistry-qualitative-analysis\/\" target=\"_blank\" rel=\"noopener\">Solve all Practical Chemistry NEET PYQs<\/a><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Then revise the cation group table and the anion test table once a week until the exam.<\/p>\n\n\n\n<h2 id=\"conclusion\" class=\"wp-block-heading\">Conclusion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Practical chemistry has only been in the NEET syllabus since 2024, but it has produced a question every year since. Use this practical chemistry NEET PYQ analysis to master the cation groups and confirmatory tests, anion tests, Lassaigne&#8217;s test, functional group tests, preparations and KMnO\u2084 titrations. Because the PYQ bank is still small, learn the full syllabus list, not just the past questions.<\/p>\n\n\n\n<h2 id=\"\u2753-faq\" class=\"wp-block-heading\">\u2753 FAQ<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: Is practical chemistry in the NEET syllabus?<\/strong> A: Yes. It was added in 2024 and covers salt analysis, detection of elements, functional group tests, preparations of some compounds and titrations.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: How many questions come from practical chemistry in NEET?<\/strong> A: So far, about one question a year: in 2024, 2025 and 2026. Two were on cation groups and one on the acetate ion test.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: What is the most important topic in practical chemistry for NEET?<\/strong> A: Salt analysis, especially the group classification of cations and their confirmatory tests, followed by anion tests.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: What is the group reagent for Group IV cations?<\/strong> A: H\u2082S gas in an ammoniacal medium. It precipitates Zn\u00b2\u207a, Ni\u00b2\u207a, Co\u00b2\u207a and Mn\u00b2\u207a as sulphides.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: Why is KMnO\u2084 called a self-indicator?<\/strong> A: Its intense purple colour disappears as it reacts, so the first permanent light pink colour shows the end point without any added indicator.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: Where can I practise practical chemistry NEET PYQs for free?<\/strong> A: You can solve the practical chemistry previous year questions for free using the practice links in this article.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quick answer: A practical chemistry NEET PYQ analysis shows that this is a new and growing area. Practical chemistry was added to the NEET syllabus in 2024, and NTA has asked one question on it in each of 2024, 2025 and 2026: the group classification of cations twice and the test for the acetate ion [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":7109,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,69,2],"tags":[4332,4333,4335,4337,4334,4336,7,4008,24,2328,4064,4331,4330],"class_list":["post-7108","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-study-tips","category-chemistry","category-neet","tag-anion-tests","tag-cation-groups","tag-functional-group-tests","tag-kmno4-titration","tag-lassaignes-test","tag-mohrs-salt","tag-neet-2027","tag-neet-chapter-wise-pyq","tag-neet-chemistry","tag-neet-pyq","tag-practical-chemistry","tag-qualitative-analysis","tag-salt-analysis"],"_links":{"self":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/7108","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/comments?post=7108"}],"version-history":[{"count":1,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/7108\/revisions"}],"predecessor-version":[{"id":7110,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/7108\/revisions\/7110"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/media\/7109"}],"wp:attachment":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/media?parent=7108"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/categories?post=7108"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/tags?post=7108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}