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  • Question
  • Which of the following is not soluble in water?


  • Options
  • A. Lead sulphate
  • B. Zinc sulphate
  • C. Potassium sulphate
  • D. Sodium sulphate

  • Correct Answer
  • Lead sulphate 

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    Chemistry problems


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    • 1. __________gives hardness to stainless steel.

    • Options
    • A. Zinc
    • B. Carbon
    • C. Lead
    • D. Tin
    • Discuss
    • 2. What happens in an oxidation reaction?

    • Options
    • A. Protons are lost.
    • B. Electrons are lost
    • C. Neutrons are lost.
    • D. Electrons are gained.
    • Discuss
    • 3. Bauxite is an ore/mineral of

    • Options
    • A. Aluminium
    • B. Beryllium
    • C. Lead
    • D. Tin
    • Discuss
    • 4. The mass of proton and mass of ________ is same.

    • Options
    • A. Neutron
    • B. Electron
    • C. Isoprone
    • D. Alpha particle
    • Discuss
    • 5. The elements known as primary nutrients for plants

    • Options
    • A. Nitrogen, Phosphorus and Potassium
    • B. Nitrogen, Oxygen and Silicon
    • C. Potassium, Boron and Nitrogen
    • D. Nitrogen, Phosphorus and Iron
    • Discuss
    • 6. Haematite is an ore/mineral of

    • Options
    • A. Zinc
    • B. Iron
    • C. Lead
    • D. Manganese
    • Discuss
    • 7. What is the chemical formula of aluminium nitride?

    • Options
    • A. AlN
    • B. Al2N
    • C. AlN2
    • D. AlN3
    • Discuss
    • 8. Uraninite is an ore/mineral of _______.

    • Options
    • A. Zinc
    • B. Uranium
    • C. Titanium
    • D. Aluminium
    • Discuss
    • 9. The upper part of the heterosphere is composed almost completely of which gas?

    • Options
    • A. Ozone
    • B. Nitrogen
    • C. Oxygen
    • D. Hydrogen
    • Discuss
    • 10. Methane an air pollutant is produced ______.

    • Options
    • A. by action of ultraviolet light on nitrogenous compounds.
    • B. as a by-product of manufacturing ammoniacal fertilizers
    • C. by burning of coal in insufficient air
    • D. by digestion of food by animals
    • Discuss


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