MCAS Chemistry Exam Practice

10 Questions | Total Attempts: 125

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MCAS Chemistry Exam Practice - Quiz

Chemistry is branch of science that deals with the study of matter and changes that matter undergoes under different conditions. This branch is applied in industries operating on petroleum, pharmaceutical, breweries etc. This subject deals with substances of daily use namely; acids, bases, salts and chemical compounds whether organic or inorganic.


Questions and Answers
  • 1. 
     What is the symbol of the element named Iron? 
    • A. 

      I

    • B. 

      Fe

    • C. 

      Ir

    • D. 

      Ag

  • 2. 
    Which of these is not a metallic element?
    • A. 

      Uranium

    • B. 

      Oxygen

    • C. 

      Calcium

    • D. 

      Silicon

  • 3. 
    How many groups of elements is present in the periodic table?
    • A. 

      5

    • B. 

      6

    • C. 

      7

    • D. 

      8

  • 4. 
    Which of these elements exhibit allotropy? 
    • A. 

      Zinc

    • B. 

      Phosphorus

    • C. 

      Calcium

    • D. 

      Boron

  • 5. 
     What is the name given to group 7 elements?
    • A. 

      Alkali earth metals

    • B. 

      Alkali metals

    • C. 

      Halogens

    • D. 

      Noble gases

  • 6. 
    What is the the valency of oxygen?
    • A. 

      -1

    • B. 

      +1

    • C. 

      -2

    • D. 

      +2

  • 7. 
    What is name given to elements having the same atomic number but different atomic mass? 
    • A. 

      Isotopes

    • B. 

      Isotones

    • C. 

      Isomers

    • D. 

      Allotropes

  • 8. 
    What is the first element of the periodic table?
    • A. 

      Lithium

    • B. 

      Sodium

    • C. 

      Helium

    • D. 

      Hydrogen

  • 9. 
    Which of these is a common salt?
    • A. 

      NaOH

    • B. 

      NaCl

    • C. 

      KCl

    • D. 

      KOH

  • 10. 
    Which of these is a base? 
    • A. 

      Zn(OH)Cl

    • B. 

      KCl

    • C. 

      NaCl

    • D. 

      NaOH