Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- The number of moles of (NH_4)_2SO_4 Fe_2(SO_4)_3 24 ,H_2O formed from a sample containing 0.0056 g of Fe is
- What is the mass of one molecule of yellow phosphorus? (Atomic mass, P = 30)
- The number of sodium atoms in 2 moles of sodium ferrocyanide is
- 10^ 21 molecules are removed from 200 mg of CO_2 . The moles of CO_2 left are
- One mole of CH_4 contains
- The oxygen obtained from 72 kg of water is
- For 14 g of CO, the wrong statement is
- The vapour density of a gas is 11.2. The volume occupied by one gram of the gas at STP is
- What is the atomic weight of an element X for which a sample containing 1.58 10^ 22 atoms weight 1.05 g?
- Number of molecules in 1 L of water is close to
- The mass of 112 cm^3 of CH_4 gas at STP is
- Cyclohexanol is dehydrated to cyclohexene on heating with conc. H_2SO_4 . If the yield of this reaction is 75%, how much...
- In the synthesis of ammonia N_2(g) + 3H_2 2NH_3(g) If the quantity of N_2 reacted is 700 mL, the quantity of H_2 and NH_3 would be
- A metal oxide has the formula A_2O_3 . It can be reduced by hydrogen to give free metal and water. 0.1596 g of this metal oxide...
- How many moles of magnesium phosphate, Mg_3(PO_4)_2 will contain 0.25 mole of oxygen atom ?
- 20.0 kg of N_2 (g) and 3.0 kg of H_2 (g) are mixed to produce NH_3 (g). The amount of NH_3 (g) formed is
- The total number of electrons in 18 mL of water (density = 1 g mL^ -1 )
- Which of the following sets of compounds correctly illustrate the law of reciprocal proportions?
- Number of atoms in 12 g ^ 24 _ 12 Mg is equal to
- To make 0.01 mole, which of the following has maximum mass?
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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