Quiz  /  Water or Hydride of Oxygen Class 7 MCQ Questions With Answers

  • 1. 
    KNO3 is used in fertilizers as a source of potassium and nitrogen. If you want to buy fertilizer with this compound, what chemical name should you look for?

  • potassium nitrate
  • potassium nitrite
  • potassium nitride
  • potassium nitrogen

  • 2. 
    SO42-

  • sulfate
  • sulfite

  • 3. 
    NH4+

  • nitrogen hydride
  • ammonium

  • 4. 
    CO32-

  • carbon oxide
  • carbonate

  • 5. 
    Name this compound: NH4F

  • Ammonia fluoride
  • Ammonium fluorite
  • Ammonia fluorate
  • Ammonium fluoride

  • 6. 
    What is the name of K3PO4?

  • Tripotassium Phosphate
  • Tripotassium Phosphite
  • Potassium phosphide
  • Potassium phosphate

  • 7. 
    What is the name of Al(NO3)3?

  • Aluminum trinitrate
  • Monoaluminum nitrate
  • Aluminum (III) nitrate
  • Aluminum Nitrate

  • 8. 
    What is the name of AlPO4?

  • Aluminum phosphoxie
  • Monoaluminum tetraphosphate
  • Aluminum (III) phosphate
  • Aluminum phosphate

  • 9. 
    Which naming pattern is unique to polyatomic ionic compounds?

  • they can have prefixes
  • they can end in -ide
  • they can end in -ate
  • they use Roman Numerals

  • 10. 
    What's the name of the compound NH4NO3 ?

  • nitrogen hydrogen oxygen
  • ammonium nitrite
  • nitrogenous water
  • ammonium nitrate

  • 11. 
    PO43-

  • phosphate
  • phosphorus oxide

  • 12. 
    What is the name of NH4Cl?

  • nitrogen tetrahydrogen chloride
  • ammonium chlorine
  • ammonium chloride
  • ammonium chlorate

  • 13. 
    Name the following compound: NaNO3

  • Sodium Nitrogen Oxide
  • Sodium nitrate
  • Sodium nitrite
  • Sodium nitride

  • 14. 
    An -ate or -ite at the end of a compound name usually indicates that the compound contains _____________.

  • fewer electrons than protons
  • neutral molecules
  • only two elements
  • a polyatomic anion

  • 15. 
    CN-

  • cyanide
  • carbon nitride

  • 16. 
    ClO3-

  • chlorite
  • chlorate
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