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Some Basic Concepts of Chemistry · 2021 · 18 Mar · Shift 1

3 Chemistry questions from this JEE Main paper
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Some Basic Concepts of Chemistry · 2021 · 18 Mar · Shift 1

3 Chemistry questions from this JEE Main paper

  1. Q19.​ grams of 3-Hydroxy propanal (MW = 74) must be dehydrated to produce 7.8 g of acrolein (MW = 56) (C3​H4​O) if the percentage yield is 64. (Round off to the Nearest Integer). [Given : Atomic masses : C : 12.0 u,…
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  2. Q20.A reaction of 0.1 mole of Benzylamine with bromomethane gave 23 g of Benzyl trimethyl ammonium bromide. The number of moles of bromomethane consumed in this reaction are n × 10 − 1, when n = ​. (Round off…
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  3. Q24.Complete combustion of 3g of ethane gives x × 1022 molecules of water. The value of x is ​. (Round off to the Nearest Integer). [Use : NA = 6.023 × 1023; Atomic masses in u : C : 12.0; O : 16.0; H :…
    Chemistry · Some Basic Concepts of Chemistry · Numerical