Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- The relative atomic mass of boron (which exists in two isotopic forms ^ 10 B and ^ 11 B) is 10·81. What will be the abundance of...
- The mass of 0·5 mole of N_2 gas is
- Which one of the following is NOT a heterogeneous mixture ?
- 1·7 g of silver nitrate is dissolved in 100 g of water, and 0·585 g of sodium chloride is dissolved in 100 g of water. Both are...
- The stoichiometric reaction of 516 g of dimethyldichlorosilane with water results in a tetrameric cyclic product **X** in 75%...
- The normality of H_ 2 SO_ 4 in the solution obtained on mixing 100 mL of 0.1 M H_ 2 SO_ 4 with 50 mL of 0.1 M NaOH is _____ 10^...
- 116 g of a substance upon dissociation reaction, yields 7.5 g of hydrogen, 60 g of oxygen and 48.5 g of carbon. Given that the...
- Two elements A and B which form 0.15 moles of A_ 2 B and AB_ 3 type compounds. If both A_ 2 B and AB_ 3 weigh equally, then the...
- In the given reaction, X + Y + 3Z XYZ_ 3 . If one mole of each of X and Y with 0.05 mol of Z gives compound XYZ_ 3 (Given :...
- The complete combustion of 0.492 g of an organic compound containing 'C', 'H' and 'O' gives 0.793 g of CO_ 2 and 0.442 g of H_ 2...
- Consider the reaction 4HNO_ 3 ( ) + 3KCl(s) Cl_ 2 (g) + NOCl(g) + 2H_ 2 O(g) + 3KNO_ 3 (s) The amount of HNO_ 3 required to...
- A 1.84 mg sample of polyhydric alcoholic compound 'X' of molar mass 92.0 g/mol gave 1.344 mL of H_ 2 gas at STP. The number of...
- N_ 2 (g) + 3H_ 2 (g) 3NH_ 3 (g) (20 g of N_ 2 and 5 g of H_ 2 ) Consider the above reaction, the limiting reagent of the reaction...
- In bromination of Propyne, with Bromine 1, 1, 2, 2-tetrabromopropane is obtained in 27% yield. The amount of 1, 1, 2, 2...
- Production of iron in blast furnace follows the following equation Fe_ 3 O_ 4 (s) + 4CO(g) 3Fe(l) + 4CO_ 2 (g) when 4.640 kg of...
- If 5 moles of BaCl_2 is mixed with 2 moles of Na_3PO_4, the maximum number of moles of Ba_3(PO_4)_2 formed is________ (Nearest...
- Match List-I with List-II. List-I: A. 16 g of CH_4(g) B. 1 g of H_2(g) C. 1 mole of N_2(g) D. 0.5 mol of SO_2(g) List-II: I....
- The number of molecules and moles in 2.8375 litres of O_2 at STP are respectively
- A solution is prepared by adding 2 g of "X" to 1 mole of water. Mass percent of "X" in the solution is
- A solution of sugar is obtained by mixing 200 g of its 25% solution and 500 g of its 40% solution (both by mass). The mass...
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