Some Basic Concepts of Chemistry questions
951 published questions with worked solutions.
- The volume (in mL) of 1 M NaOH required to prepare one litre of 0.2 M NaOH is_________.
- 1 molar C_2H_5OH solution contains g _______ of C_2H_5OH in 100 mL of solution.
- During the discharge of a lead storage battery, the density of 40% (by weight) H_2SO_4 fell from 1.225 to 0.98 (which corresponds...
- The maximum number of moles of oxygen gas that can be obtained by the electrolytic decomposition of 90 g of water will be
- In the following reaction slag CaSiO_3 is formed: Ca_3(PO_4)_2+C+SiO_2 P_4+CaSiO_3+CO If one mole of P_4 is formed, then CaSiO_3...
- Al_2O_3 is converted to AlN on heating with carbon in the atmosphere of N_2. How much carbon is required to convert 25.5 g of...
- What is the molecular mass (in amu) of product 'X' in the following reaction? (At. Wt.: Al=27 u, O=16 u, H=1 u, N=14 u) AlN+3H_2O...
- ^ 35 Cl and ^ 37 Cl are two isotopes of chlorine present in mass ratio 3:x, where x= ......
- SO_2 turns lime water milky. 3.2 g of SO_2 gives a milkiness (precipitate) of ....... g.
- Normality of pure sulphuric acid is:
- Sulphur forms the chlorides S_2Cl_2 and SCl_2. The equivalent mass of sulphur in SCl_2 is 16 g/mol. Therefore, the equivalent...
- Which of the following is the correct sequence of atomic weights of the given elements?
- 2.78 g of FeSO_4 xH_2O on treatment with excess of BaCl_2 solution gives 2.33 g of white precipitate of BaSO_4. What is the value...
- When 32.25 g of ethyl chloride is subjected to a dehydrohalogenation reaction, the yield of the alkene formed is 50%. The mass of...
- What mass of isobutylene is obtained from 37 g of tertiary butyl alcohol by heating with 20% H_2SO_4 at 363 K, if the yield is...
- 15.7 g of 1-chloropropane is treated with alcoholic KOH. What mass of propene (in grams) is obtained if the yield is 50%?
- 20 mL of CH₄ is burnt with 60 mL of O₂. If all measurements are made at the same P and T, what is the volume of unreacted oxygen?
- An organic compound contains carbon, hydrogen and oxygen. Its elemental analysis gave C, 38.71% and H, 9.67%. The empirical...
- A compound (60 g) on analysis gave C = 24 g, H = 4 g and O = 32 g. Its empirical formula is:
- First Nobel Prize winner in chemistry is:
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