Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- An organic compound contains about 52% carbon. It could be
- What is the empirical formula of a compound having 40% carbon, 6.66% hydrogen and 53.34% oxygen?
- What is the molecular formula of a compound whose empirical formula is CH₂O and molecular weight is 90?
- An organic compound contains C = 40%, H = 13.33% and N = 46.67%. Its empirical formula would be
- The empirical formula of a compound is CH₂. One mole of this compound has a mass of 42 g. Its molecular formula is
- What is the empirical formula of naphthalene (C₁₀H₈)?
- What is the neutralisation equivalent of benzoic acid (C₆H₅COOH, M = 122 g mol⁻¹)?
- An organic compound CₓHᵧOᵤ contains 40% C, 6.7% H and 53.3% O by mass. What is the value of 'y'?
- Caesium atoms are the largest naturally occurring atoms. The radius of Cs atom is 2.6 Å. The number of moles of Cs atoms to be...
- 0.01 mole of Buckminster fullerene contains how many grams of carbon? [Atomic mass of carbon = 12 u]
- 10 mL of a certain gaseous hydrocarbon requires 25 mL of O_2 for complete combustion, producing 20 mL of CO_2. What is the...
- 6.02 10^ 20 molecules of urea are present in 100 mL of its solution. The concentration of urea solution is (Avogadro constant,...
- Normality of 2 M H_2SO_4 is
- What is the molality of pure water? [OJEE 2008]
- How many grams of NaOH will be required to prepare 500 g solution containing 10 % w w NaOH solution?
- 100 cc of 0.6 N H_2SO_4 and 200 cc of 0.3 N HCl were mixed together. The normality of the resulting solution will be
- Volume of water needed to mix with 10 mL of 1 N HCl to get 0.1 N HCl is
- 40% by weight solution would contain how much mass of the solute in 1 L solution, density of the solution is 1.2 g/mL?
- How many moles of Al_2(SO_4)_3 would be in 50 g of the substance? (molar mass =342 g mol^ -1 )
- The molarity of the solution obtained by dissolving 2.5 g of NaCl in 100 mL of water is [J & K CET 2007]
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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