Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- The number of gram atoms of chlorine present in 6.02 10^ 25 hydrogen chloride molecules is
- The number of formula units of calcium fluoride, CaF_2, present in 146.4 g of CaF_2 (the molar mass of CaF_2 is 78.08 g/mol) is...
- How many moles of Al_2(SO_4)_3 would be in 50 g of the substance? [Jamia Millia Islamia 2006]
- The mass of 1 mole of electrons is [UP SEE 2006]
- The numerical value of N n (where N is the number of molecules in a given sample of gas and n is the number of moles of the gas)...
- Number of atoms of oxygen present in 10.6 g of Na_2CO_3 will be [J & K CET 2004]
- 4.6 10^ 22 atoms of an element weigh 13.8 g. The atomic weight of the element is
- One gram mole of a gas at NTP occupies 22.4 L. This fact was derived from [J & K CET 2004]
- Weight of an atom of an element is 6.644 10^ -23 g. What will be the number of g atom of that element in 40 kg? [AMU 2003]
- Arrange the following in the order of increasing mass (atomic mass; O = 16, Cu = 63, N = 14): I. One atom of oxygen, II. One atom...
- The total number of protons in 10 g of calcium carbonate is (N_0 = 6.023 10^ 23 ) [WB-JEE 2006]
- The number of molecules of CO_2 present in 44 g of CO_2 is [BCECE 2005]
- Which of the following has the smallest number of molecules? [WB-JEE 2007]
- Number of atoms of He in 100 u of He (atomic weight of He is 4) are [BCECE 2008]
- A signature, written in carbon pencil, weighs 1 mg. What is the number of carbon atoms present in the signature? [RPET 2005]
- Which of the following contains the maximum number of molecules? [Kerala CEE 2004]
- Number of atoms in 560 g of Fe (atomic mass 56 g mol^ -1 ) is [Jamia Millia Islamia 2005]
- Mass of 0.1 mole of methane is
- 74.5 g of a metallic chloride contains 35.5 g of chlorine, the equivalent weight of the metal is
- 2 g of metal carbonate is neutralised completely by 100 mL of 0.1 (N) HCl. The equivalent weight of metal carbonate is
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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