Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- Which of the following contains maximum number of molecules
- Which of the following pair of compound demonstrates the law of multiple proportions?
- What is number of atoms present in 2.24 dm^3 NH_ 3(g) at STP?
- What is number of hydrogen molecules needed to synthesize 3.4 g of ammonia by reaction with nitrogen?
- Find the mass of sodium carbonate in grams to form 100 ml 0.1 M solution in water (Molar mass of Na_2CO_3 = 106 g/mol)
- What is the percentage by mass of oxygen in NaOH ? (Atomic mass of Na = 23 u, O = 16 u, H = 1 u)
- The ratio of mass of 'x' atoms of an element to mass of carbon atoms is 9:1. Find the mass of 1 mol of x if molar mass of carbon...
- Calculate the amount of aluminium present in Al_2(SO_4)_3 if the compound contains 4 g of sulfur [Molar mass of sulfur = 32...
- Calculate mass in kg of 2·5 mole ammonia.
- What is the number of moles of oxygen and number of moles of N atoms respectively present in one mole thymine?
- Find the number of moles of sodium atoms in 6.9 10^ -2 kg of it (Atomic mass = 23 g mol^ -1 )
- Find the number of molecules present in 70 g dinitrogen.
- Which from following is true according to Gay-Lussac's law?
- Chlorine has two isotopes Cl^ 37 and Cl^ 35 with percentage abundance of 25% and 75% respectively. Find average atomic mass of...
- What quantity of H_2O in gram is present in 0.25 mol of it?
- Find out number of carbon atoms present in 0.35 mole of glucose.
- What is the mass in grams of 0.25 mol water?
- What is the number of molecules in 2.125 g of ammonia ?
- What is average atomic mass of chlorine if its two isotopes Cl^ 35 and Cl^ 37 exists in relative abundance of 75% and 25%...
- The mass of 4.48 dm^3 of certain gas is 5.6 g at STP. Assuming ideal behaviour, identify the probable gas from following.
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