Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Some Basic Concepts of Chemistry question

2021 · 25 Feb · Shift 1 · Q10
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /Some Basic Concepts of Chemistry
  5. /2021 · 25 Feb · Shift 1 · Q10

Some Basic Concepts of Chemistry question

2021 · 25 Feb · Shift 1 · Q10

JEE MainChemistrySome Basic Concepts of ChemistryMCQ+4 / −1
Complete combustion of 1.80 g of an oxygen containing compound (CxHyOzC_xH_yO_zCx​Hy​Oz​) gave 2.64 g of CO2CO_2CO2​ and 1.08 g of H2OH_2OH2​O. The percentage of oxygen in the organic compound is :
  1. A
    51.63
  2. B
    50.33
  3. C
    63.53
  4. D
    53.33
PreviousNext

More from Some Basic Concepts of Chemistry

  • In basic medium CrO4​2− oxidises S2​O3​2− to form SO4​2− and itself changes into Cr(OH)4​−. The volume of 0.154 M CrO4​2− required to react with 40 mL of 0.25 M S2​O3​2− is ​…2021 · Numerical
  • When 10 mL of an aqueous solution of Fe2+ ions was titrated in the presence of dil H2​SO4​ using diphenylamine indicator, 15 mL of 0.02 M solution of K2​Cr2​O7​ was required to get the end point. The molarity of the solution…2021 · Numerical
  • Consider the complete combustion of butane, the amount of butane utilized to produce 72.0 g of water is ​× 10 − 1 g. (in nearest integer)2021 · Numerical
  • An aqueous KCl solution of density 1.20 g mL − 1 has a molality of 3.30 mol kg − 1. The molarity of the solution in mol L − 1 is ​ (Nearest integer) [Molar mass of KCl = 74.5]2021 · Numerical
  • 100 mL of Na3​PO4​ solution contains 3.45 g of sodium. The molarity of the solution is ​× 10 − 2 mol L − 1. (Nearest integer) [Atomic Masses - Na : 23.0 u, O : 16.0 u, P : 31.0 u]2021 · Numerical
  • The NaNO3​ weighed out to make 50 mL of an aqueous solution containing 70.0 mg Na+ per mL is ​ g. (Rounded off to the nearest integer) [Given : Atomic weight in g mol − 1 - Na : 23; N : 14; O : 16]2021 · Numerical
  • In Carius method for estimation of halogens, 0.2 g of an organic compound gave 0.188 g of AgBr. The percentage of bromine in the compound is ​. (Nearest integer) [Atomic mass : Ag = 108, Br = 80]2021 · Numerical
  • 100 g of propane is completely reacted with 1000 g of oxygen. The mole fraction of carbon dioxide in the resulting mixture is x × 10 − 2. The value of x is ​. (Nearest integer) [Atomic weight : H = 1.008;…2021 · Numerical