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General Knowledge > General Science

CHEMICAL BONDING MOLECULAR STRUCTURE MCQs

Total Questions : 19 | Page 1 of 2 pages
Question 1. Which is the correct molecular structure for carbon dioxide?
  1.    None of these
  2.    O=S=C
  3.    :C=O:
  4.    o=c=0
 Discuss Question
Answer: Option D. -> o=c=0
Question 2. The chemical formula of iron (III)bromide is
  1.    FeBr
  2.    Fe(III)Br
  3.    FeBr₃
  4.    Fe₂Br₃
 Discuss Question
Answer: Option C. -> FeBr₃
Question 3. What is the number of valence electrons for Neon and other Noble Gases besides Hydrogen?
  1.    5
  2.    6
  3.    7
  4.    8
 Discuss Question
Answer: Option D. -> 8
Question 4. Write the singly bonded Lewis dot structure for BF3
  1.    It obeys the octet rule on all atoms.
  2.    It has less than an octet on at least one atom.
  3.    It has a lone pair of electrons on the boron atom.
  4.    It has less than an octet of electrons on all atoms.
 Discuss Question
Answer: Option B. -> It has less than an octet on at least one atom.
Question 5. Provide the IUPAC name for NH4NO3
  1.    ammonium nitrogen trioxide
  2.    nitrogen hydride nitrate
  3.    ammonium nitrate
  4.    ammonium (IV) nitrate
 Discuss Question
Answer: Option C. -> ammonium nitrate
Question 6. A valid Lewis structure of _______ cannot be drawn without violating the octet rule
  1.    NF3
  2.    IF3
  3.    PF3
  4.    SbF3
 Discuss Question
Answer: Option B. -> IF3
Question 7. Which of the following molecules are polar molecule?
  1.    HCl
  2.    H2O
  3.    CH4
  4.    NH3
 Discuss Question
Answer: Option D. -> NH3
Question 8. What is the name of the compound NO?
  1.    nitrogen dioxide
  2.    nitrogen monoxide
  3.    dinitrogen trioxide
  4.    None of these
 Discuss Question
Answer: Option B. -> nitrogen monoxide
Question 9. What is the hybridisation for central atom in IF4-?
  1.    sp2
  2.    sp3
  3.    sp3d
  4.    sp3d2
 Discuss Question
Answer: Option D. -> sp3d2
Question 10. As the number of covalent bonds between two atoms increases, the distance between the atoms ______ and the strength of the bond between them ______
  1.    increases, increases
  2.    decreases, decreases
  3.    increases, decreases
  4.    decreases, increases
 Discuss Question
Answer: Option D. -> decreases, increases

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