Chemistry Genius Quiz

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1. Which of the following substances are the most suitable for the preparation of lead(II) sulphate salt?

  • Solid lead(II) nitrate and calcium sulphate
  • Solid lead(II) oxide and sodium sulphate
  • Lead(II) nitrate solution and potassium sulphate solution
  • Solid lead(II) carbonate and potassium sulphate
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2. Which of the following is the characteristic of catalyst?

  • Physical state of catalyst is unchanged during reaction.
  • Catalyst used only in solid form.
  • The quantity of catalyst remains the same after the reaction.
  • Catalyst increases the quantity of product.

3. Element P and element Q have proton number of 19 and 8 respectively. What is the relative molecular mass of a compound formed between P and Q? [Relative atomic mass : P = 39, Q = 16]

  • 46
  • 94
  • 71
  • 35

4. Which of the following pairs of ion has the same of number of electrons?

  • Na+ and Li+
  • Mg2+ and O2-
  • Ca2+ and Mg2+
  • Cl- and F-

5. What is the volume of oxygen gas used if 5.5 g of propane is completely burnt in air? Molar Volume: 24 dm3 per mol (Tip: Write down the equation)

  • 9.0dm^3
  • 3.0dm^3
  • 15.0dm^3
  • 30.0dm^3


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