Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- Molecular weight of acetic acid is 60. Its empirical formula is:
- 0.75 g platinic chloride of a mono-acid base, on ignition, gave 0.245 g metallic platinum. The molecular weight of the base is:
- 15 mL of a gaseous hydrocarbon required 45 mL of oxygen for complete combustion. 30 mL of CO₂ is formed. The formula of the...
- 0.759 g of a silver salt of a dibasic organic acid, on ignition, left 0.463 g of metallic silver. The equivalent weight of the...
- 13 g of a hydrocarbon contains 1.0 g of hydrogen. Its formula is:
- In a compound, C, H and N are present in 9 : 1 : 3.5 by weight. If the molecular weight of the compound is 108, the molecular...
- The formula of a compound which gives a simple whole number atomic ratio in one molecule of a compound is called:
- An organic compound has C and H percentage in the ratio 6 : 1 and C and O percentage in the ratio 3 : 4. The compound is:
- When Lemery, for the first time, proposed his classification of substances in 1675, the substance not known among the following...
- 500 mL of a hydrocarbon gas burnt in excess oxygen yielded 2500 mL of CO₂ and 3.0 litre of water vapour (all volumes measured at...
- In a compound of Xe, F and O: Xe = 60.4% (atomic mass 131.3), F = 17.5% (atomic mass 19.0). Find the number of oxygen atoms in...
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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