Principles Related To Practical Chemistry — practice questions
159 curated practice questions from Principles Related To Practical Chemistry (Chemistry JEE Main, NTA Exams) — 69 easy, 86 medium, 4 hard. Every question includes the final answer free; step-by-step worked solutions with a free account.
- Aqueous Solution of BaBr 2 gives yellow precipitate with:
- The prussian blue colouration obtained in the test for nitrogen in the organic compound is
- When chlorine water is added to an aqueous solution of potassium halide in the presence of chloroform, a colour is…
- In Kjeldahl's method for estimation of nitrogen, CuSO 4 acts as: (Jee Main 2024)
- Amount of oxalic acid present in a solution can be determined by its titration with KMnO 4 solution in the presence of…
- Dumas method involves the determination of nitrogen content in the organic compound in form of–
- Given below are two statements: Statement I: Kjeldahl method is applicable to estimate nitrogen in pyridine. Statement…
- Which technique among the following, is most appropriate in separation of a mixture of 100 mg of p-nitrophenol and…
- Match items of column I and II Column I (Mixture of compounds) Column II (Separation Technique) A. H 2 O/CH 2 Cl 2 i…
- Which of the following statement is correct for paper chromatography? (Jee Main 2023)
- An aqueous solution of salt containing an acidic radical X – reacts with sodium hypochlorite in neutral medium. The gas…
- There are four test tubes containing dilute HCl, BaCl 2 , CdCl 2 and KNO 3 solutions. Which of the following reagents…
- In a Dumas nitrogen estimation 0.3 g of an organic compound gave 50 cm 3 of nitrogen collected at 300 K and 715 mm…
- The separation of the constituents of a mixture by column chromatography depends upon their
- A metal chloride original solution (i.e. O.S) on mixing with K 2 CrO 4 solution gives a yellow precipitate soluble in…
- A mixture of acetone and CCl 4 can be separated by
- Which of the following reagents turns white precipitate of AgCl to yellow ?
- Which one of the following techniques is not used to spot components of a mixture separated on a thin layer…
- Match List I with List II: List I (Mixture) List II (Separation Technique) (A) CHCl 3 + C 6 H 5 NH 2 I. Steam…
- Which of the following compounds would give the following set of qualitative analysis? (i) Fehling’s Test : Positive…
- Amount of oxalic acid present in a solution can be determined by its titration with KMnO 4 solution in the presence of…
- NH 4 SCN can be used to test one or more out of Fe 3+ , Co 2+ , Cu 2+ :
- The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These…
- A solution of a salt in concentrated sulphuric acid H 2 SO 4 acid produced a deep blue colour with starch iodide…
- 0.395 g of an organic compound by Carius method for the estimiation of sulphur gave 0.582 g of BaSO 4 . The percentage…
- Nitrate is confirmed by ring test. The brown colour of the ring is due to formation of :
- Which of the following test is not used for protein/amino acids–
- How will you purify a liquid having non-volatile impurities?
- Appearance of blood red colour, on treatment of the sodium fusion extract of an organic compound with FeSO 4 in…
- An aqueous solution of salt gives white precipitate with AgNO 3 solution as well as with dilute H 2 SO 4 . It may be
- The molecular mass of a organic compound which contains only one nitrogen atom can be
- Lassaigne's test is used for detection of: (Jee Main 2024)
- March List-I with List-II. List-I (Precipitating reagent and conditions) List-II (Cation) (A) NH 4 Cl + NH 4 OH/ARKS…
- Which of the following reagents gives white precipitate with Hg(NO) 2 solution ?
- In Lassaigne’s test when both N and S are present, blood red colour obtained is due to the formation of–
- In Carius method of estimation of halogen, 0.45 g of an organic compound gave 0.36 g of AgBr. Find out the percentage…
- A colourless solution of a compound gives a precipitate with AgNO 3 solution but no precipitate with a solution of Na 2…
- A mixture of water and ethanol can be separated by
- Which of the following nitrogen containing compound does not give Lassaigne's test? (Jee Main 2024)
- Match List-I with List-II (JEE Main 2022) List-I (Mixture) List-II (Purification Process) (A) Chloroform & Aniline (I)…
- A black sulphide is formed by the action of H 2 S on :
- A mixture upon adding conc. H 2 SO 4 gives deep red fumes. It may contain the anions pair :
- From the figure of column chromatography given below, identify incorrect statements. A. Compound 'c' is more polar than…
- The 0.2 g of anhydrous organic acid gave on combustion 0.04 g of water and 0.195 g of CO 2 . The acid is a dibasic acid…
- Using column chromatography, mixture of two compounds 'A' and 'B' was separated. 'A' eluted first, this indicates 'B'…
- What conclusion would you draw if during Lassaigne‘s test, a blood red colouration is obtained?
- The correct statement among the following, for a "chromatography" purification method is: (Jee Main 2024)
- The 0.2 g of anhydrous organic acid gave on combustion 0.04 g of water and 0.195 g of CO 2 . The acid is a dibasic acid…
- Given below are two statements: one is labelled as Assertion A and the other is labelled a Reason R. Assertion A: A…
- Test (Q). A compound X was fused with Na metal and the extract gave a white precipitate with AgNO 3 . The Lassaigne’s…
- A metal salt solution when treated with dimethyl glyoxime and NH 4 OH gives a rose red complex. The metal is -
- K 4 [Fe(CN) 6 ] can be used to detect one or more out of Fe 2+ , Fe 3+ , Zn 2+ , Cu 2+ , Ag+ , Ca 2+ :
- A solution of FeCl 3 when treated with K 4 [Fe(CN) 6 ] gives a Prussian blue precipitate due to the formation of (Jee…
- Which of the following statements are correct? A. Glycerol is purified by vacuum distillation because it decomposes at…
- Test (Q). A compound X was fused with Na metal and the extract gave a white precipitate with AgNO 3 . The Lassaigne’s…
- A reagent which gives brilliant red precipitate with Nickel ions in basic medium is (Jee Main 2024)
- SO 2 and CO 2 both turn lime water (X) milky, SO 2 also turns K 2 Cr 2 O 7 /H + (Y) green while O 2 is soluble in…
- Sodium nitrorusside Na 2 [Fe(CN) 5 NO] is used as reagent for detection of ______ and the compound formed is ____.
- Compounds which do not contain halogen but give positive Beilstein test?
- Disodium pentacyanonistrosyl ferrate reagent gives purple colour when which of the following element is present?
- During the qualitative analysis of SO 3 2– using dilute H 2 SO 4 , SO 2 gas is evolved which turns K 2 Cr 2 O 7…
- Three separate samples of a solution of a single salt gave these results. One formed a white precipitate with excess…
- Which of the following test is used for quantitative estimation of N
- Phenol on reaction with dilute nitric acid, gives two products. Which method will be most efficient for large scale…
- During halogen test, sodium fusion extract is boiled with concentrated HNO 3 to (JEE Main 2022)
- The borax bead test the coloured ions give characteristic coloured beads due to formation of:
- If N and S both are present in an organic compound during Lassaigne’s test, both will change into
- When excess of dilute NH 4 OH is added to an aqueous solution of copper sulphate an intense blue colour is developed…
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion: Sb 2 S 3…
- Given below are two statements : Statement I: Sulphanilic acid gives esterification test for carboxyl group. Statement…
- An aqueous solution of colourless metal sulphate M, gives a white precipitate with NH 4 OH. This was soluble in excess…
- Consider the following observation : M n+ + HCl (dilute) white precipitate water soluble CrO _ 4 ^ 2- yellow…
- Compound that will give positive Lassaigne’s test for both nitrogen and halogen is (Jee Main 2023)
- Which of the following compounds will answer Lassaigne’s test for nitrogen
- Match List I with List II: List I (Reagents used) List II (Compound with Functional group detected) A. Alkaline…
- Thin layer chromatography of a mixture shows the following observation: The correct order of elution in the silica gel…
- 0.2475g of an organic compound gave on combustion 0.4950g of carbon dioxide and 0.2025g of water. The percentage of…
- Match the List-I with List-II : List-I (Cations) List-II (Group reaction) (P) Pb 2+ , Cu 2+ (i) H 2 S gas in presence…
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion: To…
- 'Adsorption' principle is used for which of the following purification method? (Jee Main 2024)
- Steam distillation is used to purify a compound which is steam volatile and insoluble in water. The impurities should…
- A chloride salt solution acidified with dil. HNO 3 gives a curdy white precipitate, [A], on addition of AgNO 3 . [A] on…
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. STATEMENT-1…
- Silver salt method is used to determine molecular weight of
- The 0.2 g of anhydrous organic acid gave on combustion 0.04 g of water and 0.195 g of CO 2 . The acid is a dibasic acid…
- Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R Assertion A: Thin…
- An aqueous solution of a substance gives a white precipitate on treatment with dilute hydrochloric acid, which…
- The adsorbent used in adsorption chromatography is/are – A. silica gel B. alumina C. quick lime D. magnesia Choose the…
- Which of the following compound Discharge bromine solution to colourless without evolving HBr?
- An aqueous solution of a substance gives a white precipitate on treatment with dilute hydrochloric acid, which…
- From the following information: X + H 2 SO 4 → Y (a colourless and irritating gas) Y + K 2 Cr 2 O 7 + H 2 SO 4 → green…
- An organic compound having carbon, hydrogen and sulphur contains 4% of sulphur. The minimum molecular weight of the…
- Which Metal cyanide give a positive Lassaigne’s test for nitrogen?
- and CH 3 CHO can be distinguished by
- Which of the following organic compounds will give white precipitate with AgNO 3 ?
- Which of the following test can be used to distinguish between alcohol and phenol?
- Yellow ammonium sulphide solution is a suitable reagent for the separation of :
- A light yellow precipitate is formed in the second group of the qualitative analysis on passing H 2 S even when no…
- [X] + H 2 SO 4 → green solution [X] and [Y] are
- 3780 g of an organic chloro compound gave 0.5740 g of silver chloride in Carius estimation. Calculate the percentage of…
- Cu 2+ and Ag + are both present in the same solution. To precipitate one of the ions and leaves the other in solution…
- A white crystalline substance dissolves in water. On passing H 2 S in this solution, a black precipitate is obtained…
- In the reaction of oxalate with permanganate in acidic medium, the number of electrons involved in producing one…
- Match List-I with List-II. List-I (Technique) List-II (Application) A. Distillation I. Separation of glycerol from…
- The ion that cannot be precipitated by both HCl and H 2 S is:
- 0.15 g of an organic compound gave 0.12 g of AgBr by Carius method. The percentage of bromine in the compound is
- Which one of the following salts will produce clear and transparent original solution in 2M HCl?
- In Dumas method for the estimation of N 2 , the sample is heated with copper oxide and the gas evolved is passed over …
- Steam distillation is used to purify a compound which is steam volatile and insoluble in water. The impurities should…
- To separate a mixture of amines from each other, one should follow
- Match List-I with List-II. Choose the correct answer from the options given below. (Jee Main 2024) (Test)…
- The 0.2 g of anhydrous organic acid gave on combustion 0.04 g of water and 0.195 g of CO 2 . The acid is a dibasic acid…
- Compound (A), On strong heating gives two oxides of sulphur. On adding aqueous NaOH solution to its aqueous solution, a…
- Which of the following compound is/are purified by sublimation?
- Conc. H 2 SO 4 is put into two test tubes. 'A' containing a nitrate salt and 'B' containing a bromide salt and the…
- Which of the following observations is correct and is used in the identification of carboxylic acids?
- CoS (black) obtained in group IV of salt analysis is dissolved in aqua regia and is treated with an excess of NaHCO 3…
- Methods used for purification of organic compounds are based on: (Jee Main 2024)
- Which among the following purification methods is based on the principle of "Solubility" in two different solvents?…
- Compound A reacts with CHCl 3 and KOH and gives an offesnive smelling compound. A can be
- An organic liquid decomposes below its boiling point. How will you purify it?
- Test (Q). A compound X was fused with Na metal and the extract gave a white precipitate with AgNO 3 . The Lassaigne’s…
- Match List-I with List-II. Choose the correct answer from the options given below: (Jee Main 2024) List-I (Test)…
- An organic compound contains C, H, N, S and Cl. For the detection of chlorine, the sodium extract of the compound is…
- In the precipitation of the iron group (III) in qualitative analysis, ammonium chloride is added before adding ammonium…
- Chromatographic technique/s based on the principle of differential adsorption is/are A. Column chromatography B. Thin…
- Which of the following will not give test for ‘N’ in sodium extract?
- A substance on treatment with dilute H 2 SO 4 liberates a colourless gas which produces (i) turbidity with baryta water…
- Test (Q). A compound X was fused with Na metal and the extract gave a white precipitate with AgNO 3 . The Lassaigne’s…
- Upon treatment with ammoniacal H 2 S, the metal ion that precipitates as a sulphide is:
- The best method for the sepration of naphthalene and benzoic acid from their mixture is
- A mixture when rubbed with dilute acid smells like vinegar. It contains :
- Test (Q). A compound X was fused with Na metal and the extract gave a white precipitate with AgNO 3 . The Lassaigne’s…
- During the detection of acidic radical present in a salt, a student gets a pale yellow precipitate soluble with…
- The Lassiagne's extract is boiled with dil. HNO 3 before testing for halogens because, (Jee Main 2024)
- H 2 S in the presence of HCl precipitates II group but not IV group because :
- Ferric alum gives deep red colour with NH 4 SCN due to the formation of :
- The formula of the purple colour formed in Laissaigne’s test for sulphur using sodium nitroprusside is (JEE Main 2022)
- The technique used for purification of steam volatile water immiscible substance is: (Jee Main 2024)
- Given below are two statements: Statement I: In ‘Lassaigne’s Test’, when both nitrogen and sulphur are present in an…
- Given below are two statements. One is labelled as Assertion and the other is labelled as Reason. Assertion: Group II…
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion…
- An original solution of an inorganic salt in dilute HCl gives a brown colouration with potassium hexacyanidoferrate…
- Aromatic aldehydes and aliphatic aldehydes can be separated by
- An organic compound is heated with HNO 2 at 0 o C and then the resulting solution is added to a solution β-napthol…
- A sugar ‘X’ dehydrates very slowly under acidic condition to give furfural which on further reaction with resorcinol…
- The presence of magnesium is confirmed in the qualitative analysis by :
- Will you get any precipitate if you add silver nitrate solution to chloromethane? If not, why?
- The 0.2 g of anhydrous organic acid gave on combustion 0.04 g of water and 0.195 g of CO 2 . The acid is a dibasic acid…
- In the wet tests for identification of various cations by precipitation, which transition element cation doesn’t belong…
- In qualitative test for identification of presence of phosphorous, the compound is heated with an oxidizing agent…
- When 0.32g of a compound is heated with conc. HNO 3 and BaCl 2 , 0.932g BaSO 4 is obtained. The percentage of sulphur…
- Phenol + Phthalic anhydride [ fusion ] Conc. H _ 2 SO _ 4 ~B . B gives which of the following colour in alkaline medium?
- Steam distillation is used to purify a compound which is steam volatile and insoluble in water. The impurities should…
- Which of the following reactions occur during the detection of nitrogen in organic substances by Lassaigne’s test?
- Given below are two statements: Statement I: The gas liberated on warming a salt with dil. H 2 SO 4 , turns a piece of…
- Match List-I with List-II. List-I (Name of the test) List-II (Reaction sequence involved) [M is metal] (A) Borax bead…
- Steam distillation is used to purify a compound which is steam volatile and insoluble in water. The impurities should…
- Steam distillation is used to purify a compound which is steam volatile and insoluble in water. The impurities should…