Principles Related to Practical Chemistry questions
214 published questions with worked solutions.
- Lead sulphate is soluble in:
- A solution of a salt in water, on addition of dilute HCl, gives a white precipitate soluble in hot water. The salt contains:
- During the fusion of an organic compound with sodium metal, the nitrogen of the compound is converted into
- The function of boiling the sodium extract with conc. HNO₃ before testing for halogen is
- In Lassaigne's test, the organic compound is fused with a piece of sodium metal in order to
- Which sodium compound is formed when an organic compound containing both nitrogen and sulphur (bonded to the same carbon) is...
- Detection of phosphorus in the compound can be done by its conversion into phosphate. The reagent used to identify the phosphate...
- The sodium extract of an organic compound, on boiling with HNO₃ and addition of ammonium molybdate solution, gives a yellow...
- A nitrogen-containing organic compound, when fused with sodium, forms
- Sodium nitroprusside, when added to an alkaline solution of sulphide ions, produces a colouration
- Detection of sulphur in the sodium extract is done by
- During the AgNO₃ test for detection of halogens, the sodium extract is boiled with a few drops of conc. HNO₃ to decompose
- The Lassaigne's extract is boiled with dil. HNO₃ before testing for halogens because
- [IIT 1998] *p*-Chloroaniline and anilinium hydrochloride (aniline hydrochloride) can be distinguished by
- Sulfanilic acid is fused with an insufficient amount of sodium metal for Lassaigne's test. How many distinct fusion products are...
- In the Lassaigne's test for nitrogen, the Prussian-blue colour is due to the formation of ferric ferrocyanide, Feₓ[Fe(CN)₆]ᵧ....
- Solubility of deliquescent substances in water is generally:
- How many of the following salts show increase in solubility in water with increase in temperature? i. NaNO_3 ii. Li_2SO_4 iii....
- On addition of AgNO_3 to NaCl, white ppt occurs:
- Which of the following chlorides is water-insoluble? [WB-JEE 2006]
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Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration