Quiz  /  Chemistry Class 11 MCQ Questions With Answers

  • 1. 
    What is a hydrocarbon?

  • A compound composed of carbon and water
  • A compound composed of carbon and hydrogen
  • A compound composed of carbon and oxygen
  • A compound composed of carbon and nitrogen

  • 2. 
    Which of the following hydrocarbons contains at least one double bond?

  • Alkanes
  • Alkenes
  • Alkynes

  • 3. 
    What process is modeled with this equation?

  • alpha decay
  • beta decay
  • fission
  • fusion

  • 4. 
    Which type of hydrocarbon is shown above?

  • Alkane
  • Alkene
  • Alkyne
  • None of the above

  • 5. 
    Why are ions charged particles?

  • The number of electrons does not equal the number of protons.
  • The number of protons does not equal the number of neutrons.
  • The number of neutrons does not equal the number of electrons.
  • The electric charges of the electrons and protons cancel each other out.

  • 6. 
    How many neutrons are in this isotope of Uranium?

  • 235
  • 92
  • 327
  • 143

  • 7. 
    Cellulose is made of glucopyranose subunits that are repeated hundreds of times. Knowing this about the structure of cellulose, it is most likely a(n)...

  • Alkane
  • Petroleum product
  • Polymer
  • Straight carbon chain

  • 8. 
    What is it about coal that can make it a contributing factor to acid rain?

  • If the coal is burned at a high temperature, acid rain could form.
  • If the coal contains too much hydrogen, acid rain could occur.
  • If the coal isn't mined correctly, it could cause acid rain when burned.
  • If the coal contains too much nitrogen or sulfur, acid rain could occur.

  • 9. 
    What is the mass number of at isotope that has 20 protons, 21 neutrons and 18 electrons?

  • 18
  • 20
  • 21
  • 41

  • 10. 
    How many neutron are in the atom "K"?

  • 7
  • 2
  • 39
  • 12

  • 11. 
    What charge will a nitride ion have?

  • 3+
  • 2+
  • 2-
  • 3-

  • 12. 
    If an atom has 3 valence electrons, what charge will it have as an ion?

  • +3
  • -3
  • +5
  • -5

  • 13. 
    What do you call the energy required to prevent the protons in the nucleus from repelling?

  • nuclear energy
  • binding energy
  • radioacitve energy
  • electromagnetic energy

  • 14. 
    What charge will a Beryllium ion have?

  • +
  • 2+
  • 2-
  • -

  • 15. 
    Anions are _____ ions.

  • positive
  • negative
  • neutral

  • 16. 
    What charge will an aluminum ion have?

  • 3+
  • 2+
  • 2-
  • 3-

  • 17. 
    You know you a chemical reaction has occurred if

  • there is a precipitate.
  • there is a color change.
  • there is a temperature change.
  • All of these answers are evidence.

  • 18. 
    The three types of nuclear radiation in order of increasing penetrating power are

  • alpha, beta, gamma
  • alpha, gamma, beta
  • beta, alpha, gamma
  • gamma, alpha, beta

  • 19. 
    What type of nuclear equation is this?

  • fusion
  • fission
  • alpha
  • beta

  • 20. 
    What process is modeled by the equation?

  • alpha decay
  • beta decay
  • fission
  • fusion

  • 21. 
    If I gain electrons I become

  • Positive because I've added to my atom
  • negative because I've added electrons
  • same because i'm balanced
  • equal because now I have electrons

  • 22. 
    Which of the following is a compound?

  • Co
  • O2
  • C
  • CO2

  • 23. 
    Which scientific law states that an atom cannot be created or destroyed:

  • Law of Conservation of Matter
  • Law of Gravity
  • Law of Conservation of Mass
  • Law of Motion

  • 24. 
    A molecule is made up of

  • one or more mixtures.
  • one or more compounds.
  • one or more atoms.
  • one or more solutions.

  • 25. 
    Why does an atom undergo beta decay?

  • It has too many electrons.
  • It has an atomic number greater than 83
  • It has more neutrons than protons
  • It has more protons than neutrons

  • 26. 
    Beryllium will ____ valence electrons when forming an ionic bond.

  • lose 4
  • gain 4
  • lose 2
  • gain 2

  • 27. 
    How many valence electrons does Sulfur

  • 16
  • 32
  • 6
  • 3

  • 28. 
    The proper formula for magnesium hydroxide:

  • MgOH
  • Mg2OH
  • Mg(OH)2
  • Mg2OH2

  • 29. 
    What sort of shield will block gamma rays?

  • skin
  • paper
  • aluminum
  • thick lead

  • 30. 
    Why can carbon combine with itself to make substances that have very different properties? (ex. graphite and diamond).

  • Because of carbon's 4 valence electrons it can form a variety of bonds with other carbons.
  • Because carbon is polar it can combine in a variety of ways.
  • Because carbon will either give or take 4 electrons so it can form various substances
  • Because carbon forms cations it combines in various ways.
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