Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- Volume occupied by one molecule of water (density 1 g cm^ -3 ) is:
- At STP, 5.6 litre of a gas weighs 60 g. The vapour density of the gas is:
- If 0.22 g of a substance when vaporized displaced 45 cm^3 of air measured over water at 293 K and 755 mm pressure, and if vapour...
- 20 g of an acid furnishes 0.5 moles of H_3O^+ ions in its aqueous solution. The value of 1 g eq. of the acid will be:
- The number of atoms in 558.5 g of Fe (at. wt. 55.85) is:
- Amount of oxygen required for complete combustion of 27 g of Al is:
- Equivalent weight of anhydrous oxalic acid is:
- Vapour density of a metal chloride is 66. Its oxide contains 53% metal. The atomic weight of the metal is:
- How many atoms are contained in one mole of sucrose (C_ 12 H_ 22 O_ 11 )?
- The number of atoms present in 16 g of oxygen gas is:
- 224 mL of a triatomic gas weighs 1 g at 273 K and 1 atm. The mass of one atom of this gas is:
- Mol. wt. = vapour density × 2 is valid for:
- Molarity of a solution containing 5.3 g of anhydrous Na_2CO_3 per litre is:
- The isotopic abundance of C-12 and C-14 is 98% and 2% respectively. What would be the number of C-14 isotope atoms in a 12 g...
- One litre N_2, 7 8 litre O_2 and 1 litre CO are taken in a mixture under identical conditions of P and T. The amount of gases...
- The oxide of a metal contains 60% of the metal. What will be the percentage of bromine in the bromide of the metal, if the...
- 4 g-atom of Ag contains:
- The number of molecules in 16 g of methane is:
- An oxide of a metal has 20% oxygen. The eq. wt. of the oxide is:
- The number of molecules in 4.25 g of ammonia is approximately:
Other chapters
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