Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Some Basic Concepts of Chemistry · 2021 · 25 Feb · Shift 1

2 Chemistry questions from this JEE Main paper
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /JEE Main
  3. /Papers
  4. /2021 · 25 Feb · Shift 1
  5. /Chemistry
  6. /Some Basic Concepts of Chemistry

Some Basic Concepts of Chemistry · 2021 · 25 Feb · Shift 1

2 Chemistry questions from this JEE Main paper

  1. Q10.Complete combustion of 1.80 g of an oxygen containing compound (Cx​Hy​Oz​) gave 2.64 g of CO2​ and 1.08 g of H2​O. The percentage of oxygen in the organic compound is :
    Chemistry · Some Basic Concepts of Chemistry · MCQ
  2. Q19.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 ​…
    Chemistry · Some Basic Concepts of Chemistry · Numerical