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Chapter No 5 :Chemical Bonding- Lewis Theory (179 MCQ`S)

This chapter include mcqs on Lewis Theory with answers & relevant explanation for the preparation of NEET exams, PSC exams, Lewis structure Multiple Choice questions pdf, mcqs on Chemical Bonding- Lewis Theory with Answers, Lewis Theory MCQs with Answers for the preparation of Public Service Commission or MDCAT Exam

  1. Factors that govern the formaion of an ionic bond are:
    1. High I.E of metals and low E.A of non-metals
    2. low I.E of metals and high E.A of non-metals
    3. low I.E of metals and low E.A of non-metals
    4. high I.E of metals andhigh E.A of non-metals
      5. Show Answer
      Answer: B
      Explanation:
      • N/A
  2. The lattice energy may be defined as" the amount of energy that is:
    1. released when one mole of cations combine with one mole of anions.
    2. absorbed when one mole of an ionic compound is converted into its isolated gaseous ions
    3. released when one mole of an ionic compouns is formed from its cations and anions.
    4. both b and c
      5. Show Answer
      Answer: D
      Explanation:
      • N/A
  3. Generally, the ionic componds are:
    1. solids, having high melting points and poor conductors of electricity
    2. solids, having low melting points and good conductors of electricity
    3. solids, having high melting points and good conductors of electricity
    4. solids, having low melting points and poor conductors of electricity
      5. Show Answer
      Answer: C
      Explanation:
      • N/A
  4. A covalent bond involves the sharing of electrons between:
    1. atoms having similar or small electronegativity difference
    2. two metal atoms
    3. two atoms having large electronegativity difference
    4. a metal and non-metal atom
      5. Show Answer
      Answer: A
      Explanation:
      • N/A
  5. The covalent compounds are soluble in.
    1. all bases
    2. all acids
    3. all solvents
    4. non-polar solvents
      5. Show Answer
      Answer: D
      Explanation:
      • N/A
  6. The ionic compounds can conduct electricity in:
    1. solution form only
    2. solid form
    3. solution or fused form
    4. all of these
      5. Show Answer
      Answer: C
      Explanation:
      • In Solution or fused form the ions become free.
  7. The total number of electron pairs present in a nitrogen molecule is:
    1. 3
    2. 4
    3. 5
    4. 7
      5. Show Answer
      Answer: D
      Explanation:
      • Each nitrogen atom in N2 molecule has seven electrons. Thus total of 14 electrons or 7 electron pairs.
  8. Which of the followings pair of compounds contain both ionic and covalent bonds:
    1. CHCl3 and CCl4
    2. KCl and AlCl3
    3. KCN and NaOH
    4. HBr and NaCl
      5. Show Answer
      Answer: C
      Explanation:
      • In KCN and NaOH ionic bond is present and covalent bonds are present in -C≡N and O-H
  9. Which one of the following compounds contain ionic, covalent and co-ordinate covalent bonds:
    1. NH4Cl
    2. KCN
    3. AlCl3
    4. none of these
      5. Show Answer
      Answer: A
      Explanation:
      • N/A
  10. A co-ordinate covalent bond involves the:
    1. sharing of electrons contributed by both atoms
    2. sharing of electrons contributed by one atom only
    3. complete transfer of electrons
    4. all of these
      5. Show Answer
      Answer: C
      Explanation:
      • N/A

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