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MCQs

Total Questions : 425 | Page 9 of 43 pages
Question 81. Chemical reactivity depends upon
  1.    sigma bond
  2.    Pi bond
  3.    size of atom
  4.    size of molecule
 Discuss Question
Answer: Option B. -> Pi bond
Answer: (b).Pi bond
Question 82. Chemical reactivity can be determined through
  1.    polarity of a bond
  2.    bond energy
  3.    number of electrons used
  4.    number of lone pairs
 Discuss Question
Answer: Option B. -> bond energy
Answer: (b).bond energy
Question 83. The bond length in C-O is 0.143, whereas in C=O, the bond length
  1.    increases
  2.    decreases
  3.    remains the same
  4.    may increase or decrease depending on other factors
 Discuss Question
Answer: Option B. -> decreases
Answer: (b).decreases
Question 84. A greater quantity of negative charge exists between two atomic nuclei in
  1.    ionic bonds
  2.    single covalent bonds
  3.    double covalent bonds
  4.    triple covalent bonds
 Discuss Question
Answer: Option D. -> triple covalent bonds
Answer: (d).triple covalent bonds
Question 85. The bond length in C-C is
  1.    0.154
  2.    0.134
  3.    0.112
  4.    0.116
 Discuss Question
Answer: Option A. -> 0.154
Answer: (a).0.154
Question 86. Metals conduct electricity when they are
  1.    solid
  2.    molten
  3.    aqueous
  4.    gaseous
 Discuss Question
Answer: Option C. -> aqueous
Answer: (c).aqueous
Question 87. The attraction of water molecules to the ions on the surface of ionic solid is termed as
  1.    ion-dipole attractions
  2.    dipole interaction
  3.    dipole reaction
  4.    ion-attraction
 Discuss Question
Answer: Option A. -> ion-dipole attractions
Answer: (a).ion-dipole attractions
Question 88. What is true about iodine?
  1.    it is non-polar only
  2.    it is insoluble only
  3.    it is unreactive
  4.    it is non-polar and insoluble
 Discuss Question
Answer: Option D. -> it is non-polar and insoluble
Answer: (d).it is non-polar and insoluble
Question 89. The compounds which require high melting point, boiling point, high enthalpy change and a lot of energy to overcome of delocalized electrons are
  1.    metals
  2.    ionic compounds
  3.    covalent compounds
  4.    non-metals
 Discuss Question
Answer: Option B. -> ionic compounds
Answer: (b).ionic compounds
Question 90. The ionic compounds are in water
  1.    soluble
  2.    insoluble
  3.    polar
  4.    non-polar
 Discuss Question
Answer: Option A. -> soluble
Answer: (a).soluble

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