Everyday Science MCQs (page 31 of 51)

1,014 questions. Select an option to check your answer, or open "Show answer". Showing 601–620.

1. 601.

   CaSO₄ is the chemical formula of:

   • Amagnesium oxide
   • Bcalcium sulfate
   • Cpotassium nitrate (saltpetre)
   • Dsilver chloride
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   Answer: B. calcium sulfate

   CaSO₄ is calcium sulfate.

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2. 602.

   What is the chemical formula of gypsum?

   • AH₂O
   • BNO₂
   • CH₂S
   • DCaSO₄·2H₂O
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   Answer: D. CaSO₄·2H₂O

   The formula of gypsum is CaSO₄·2H₂O.

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3. 603.

   CaSO₄·2H₂O is the chemical formula of:

   • Acalcium sulfate
   • Bgypsum
   • Csilver nitrate
   • Dsodium sulfate
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   Answer: B. gypsum

   CaSO₄·2H₂O is gypsum.

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4. 604.

   What is the chemical formula of copper sulfate?

   • AKMnO₄
   • BFe₂O₃
   • CCaSO₄
   • DCuSO₄
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   Answer: D. CuSO₄

   The formula of copper sulfate is CuSO₄.

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5. 605.

   CuSO₄ is the chemical formula of:

   • Apotassium permanganate
   • Bethane
   • Caluminium oxide
   • Dcopper sulfate
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   Answer: D. copper sulfate

   CuSO₄ is copper sulfate.

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7. 606.

   What is the chemical formula of potassium permanganate?

   • AKMnO₄
   • BNaOCl
   • CC₂H₆
   • DAgNO₃
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   Answer: A. KMnO₄

   The formula of potassium permanganate is KMnO₄.

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8. 607.

   KMnO₄ is the chemical formula of:

   • Amethanal (formaldehyde)
   • Bpotassium permanganate
   • Cmagnesium sulfate (Epsom salt)
   • Dsodium nitrate
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   Answer: B. potassium permanganate

   KMnO₄ is potassium permanganate.

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9. 608.

   What is the chemical formula of potassium nitrate (saltpetre)?

   • AC₆H₆
   • BZnO
   • CKNO₃
   • DH₂O
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   Answer: C. KNO₃

   The formula of potassium nitrate (saltpetre) is KNO₃.

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10. 609.

    KNO₃ is the chemical formula of:

    • Apotassium nitrate (saltpetre)
    • Bpropane
    • Chydrogen peroxide
    • Dpotassium chloride
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    Answer: A. potassium nitrate (saltpetre)

    KNO₃ is potassium nitrate (saltpetre).

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11. 610.

    What is the chemical formula of potassium chloride?

    • AKMnO₄
    • BMg(OH)₂
    • CKCl
    • DKOH
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    Answer: C. KCl

    The formula of potassium chloride is KCl.

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12. 611.

    KCl is the chemical formula of:

    • Aammonium nitrate
    • Bpotassium chloride
    • Ccalcium chloride
    • Dethene (ethylene)
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    Answer: B. potassium chloride

    KCl is potassium chloride.

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13. 612.

    What is the chemical formula of silver nitrate?

    • ASO₂
    • BKOH
    • CCaSO₄
    • DAgNO₃
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    Answer: D. AgNO₃

    The formula of silver nitrate is AgNO₃.

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14. 613.

    AgNO₃ is the chemical formula of:

    • Asilver nitrate
    • Bhydrogen peroxide
    • Ccalcium hydroxide (slaked lime)
    • Dozone
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    Answer: A. silver nitrate

    AgNO₃ is silver nitrate.

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15. 614.

    What is the chemical formula of sodium sulfate?

    • ANa₂SO₄
    • BN₂O
    • CCaCO₃
    • DCaCl₂
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    Answer: A. Na₂SO₄

    The formula of sodium sulfate is Na₂SO₄.

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16. 615.

    Na₂SO₄ is the chemical formula of:

    • Acalcium hydroxide (slaked lime)
    • Bsilicon dioxide (silica)
    • Csodium sulfate
    • Dcalcium sulfate
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    Answer: C. sodium sulfate

    Na₂SO₄ is sodium sulfate.

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18. 616.

    What is the chemical formula of ammonium chloride?

    • ACaO
    • BNH₄Cl
    • CO₃
    • DH₂O₂
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    Answer: B. NH₄Cl

    The formula of ammonium chloride is NH₄Cl.

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19. 617.

    NH₄Cl is the chemical formula of:

    • Amagnesium sulfate (Epsom salt)
    • Bozone
    • Cammonium chloride
    • Dsilver chloride
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    Answer: C. ammonium chloride

    NH₄Cl is ammonium chloride.

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20. 618.

    What is the chemical formula of magnesium oxide?

    • AO₃
    • BSO₂
    • CMgO
    • DNH₄NO₃
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    Answer: C. MgO

    The formula of magnesium oxide is MgO.

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21. 619.

    MgO is the chemical formula of:

    • Asodium nitrate
    • Bacetic acid
    • Ccopper sulfate
    • Dmagnesium oxide
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    Answer: D. magnesium oxide

    MgO is magnesium oxide.

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22. 620.

    What is the chemical formula of magnesium hydroxide (milk of magnesia)?

    • ASO₂
    • BC₂H₆
    • CHCHO
    • DMg(OH)₂
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    Answer: D. Mg(OH)₂

    The formula of magnesium hydroxide (milk of magnesia) is Mg(OH)₂.

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