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MCQs

Total Questions : 425 | Page 36 of 43 pages
Question 351. The bond length in C-O is
  1.    0.154
  2.    0.143
  3.    0.134
  4.    0.116
 Discuss Question
Answer: Option B. -> 0.143
Answer: (b).0.143
Question 352. Ionic compounds are solid at
  1.    room temperature only
  2.    room pressure only
  3.    room humidity
  4.    room temperature and pressure
 Discuss Question
Answer: Option D. -> room temperature and pressure
Answer: (d).room temperature and pressure
Question 353. Hydrogen chloride reacts with water to give off ions of hydrogen and chloride which are
  1.    insoluble
  2.    soluble
  3.    polar
  4.    non-polar
 Discuss Question
Answer: Option B. -> soluble
Answer: (b).soluble
Question 354. The physical properties of bonding are influenced by bonding between
  1.    atoms
  2.    ions
  3.    molecules
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 355. Sodium and calcium react with water and they do not dissolve in
  1.    water
  2.    acid
  3.    alkalis
  4.    alcohol
 Discuss Question
Answer: Option A. -> water
Answer: (a).water
Question 356. The bond energy required to break the nitrogen (N) atom apart is
  1.    610 kJmol⁻¹
  2.    740 kJmol⁻¹
  3.    994 kJmol⁻¹
  4.    496 kJmol⁻¹
 Discuss Question
Answer: Option C. -> 994 kJmol⁻¹
Answer: (c).994 kJmol⁻¹
Question 357. The molecular structure that is a giant ionic compound is
  1.    Na₂O
  2.    MgO
  3.    Al₂O₃
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 358. One of the oxides below, that is covalently bonded is
  1.    SO₂
  2.    SO₃
  3.    P₄O₁₀
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 359. Repulsion in electron pairs occurs until the
  1.    repulsive forces are maximized
  2.    repulsive forces are minimized
  3.    repulsive forces are completely diminished
  4.    attraction takes over repulsion
 Discuss Question
Answer: Option B. -> repulsive forces are minimized
Answer: (b).repulsive forces are minimized
Question 360. Molecular structure that is not giant ionic compound is
  1.    Na₂O
  2.    MgO
  3.    SiO₂
  4.    Al₂O₃
 Discuss Question
Answer: Option C. -> SiO₂
Answer: (c).SiO₂

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