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Some Basic Concepts of Chemistry · 2021 · 1 Sep · Shift 2

2 Chemistry questions from this JEE Main paper
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Some Basic Concepts of Chemistry · 2021 · 1 Sep · Shift 2

2 Chemistry questions from this JEE Main paper

  1. Q18.The number of atoms in 8g of sodium is x × 1023. The value of x is ​. (Nearest integer) [Given : NA = 6.02 × 1023 mol − 1 Atomic mass of Na = 23.0 u]
    Chemistry · Some Basic Concepts of Chemistry · Numerical
  2. Q19.If 80 g of copper sulphate CuSO4​ . 5H2​O is dissolved in deionised water to make 5L of solution. The concentration of the copper sulphate solution is x × 10 − 3 mol L − 1. The value of x is ​.…
    Chemistry · Some Basic Concepts of Chemistry · Numerical