Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- Hydrated sodium sulphite has 50% H_2O. Number of molecules of hydration is _____
- The number of moles of hydrogen gas liberated when 5 moles of magnesium reacts with hydrochloric acid is ______.
- 0.5 mol of calcium was burnt in excess of oxygen, and the oxide formed was dissolved in water to form 1.0 L of solution. The...
- Calculate the amount of sodium carbonate (in grams) to be added to calcium chloride to prepare 50.0 g of calcium carbonate. [At....
- Molecular weight of anhydrous aluminium chloride is:
- 5.6 g of an organic compound on burning with excess of oxygen gave 17.6 g of CO₂ and 7.2 g of H₂O. The organic compound is
- Statement 1: A solution which contains one gram equivalent of solute per litre of solution is known as a normal solution....
- Statement 1: Normality and molarity can be calculated from each other. Statement 2: Normality is equal to the product of molarity...
- The empirical formula of an acid is CH₂O₂. The probable molecular formula of the acid may be
- In estimation of nitrogen by Dumas's method, 1.18 g of an organic compound gave 224 mL of N₂ at NTP. The percentage of nitrogen...
- An organic compound has carbon and hydrogen percentage in the ratio 6:1, and carbon and oxygen percentages in the ratio 3:4. The...
- 0.4 g of the silver salt of a monobasic organic acid on ignition gave 0.26 g of pure silver. The molecular weight of the acid is...
- The simplest formula of a compound containing 50% of element X (at. wt. 10) and 50% of element Y (at. wt. 20) is
- An organic compound contains 49.3% carbon and 6.84% hydrogen; its molecular formula (consistent with the given data and the...
- An organic compound contains 29.27% carbon, 5.69% hydrogen and 65.04% bromine. Its empirical formula is
- 4 g of a hydrocarbon on complete combustion gave 12.571 g of CO₂ and 5.143 g of water. What is the empirical formula of the...
- The silver salt of a monobasic acid, on ignition, gave 60% Ag. The molecular weight of the acid is
- If a compound on analysis was found to contain C = 18.5%, H = 1.55%, Cl = 55.04% and O = 24.81%, then its empirical formula is
- Statement 1: The empirical formula of glucose is CH₂O, which represents the relative number of atoms of each element present in...
- Percentage composition of an organic compound is C = 10.06%, H = 0.84%, Cl = 89.10%. Which of the following corresponds to its...
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