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MCQs

Total Questions : 425 | Page 41 of 43 pages
Question 401. The ability to attract the bond pair of electron towards itself of a covalently bond atom is called as
  1.    polarity
  2.    molarities
  3.    electronegativity
  4.    shielding effect
 Discuss Question
Answer: Option C. -> electronegativity
Answer: (c).electronegativity
Question 402. Electrons clouds are always moving hence creating temporary forces called
  1.    Van der Waal's forces only
  2.    dipole-induced-dipole interaction only
  3.    dipole-dipole repulsion
  4.    Van der Waal's forces and dipole-induced-dipole interaction
 Discuss Question
Answer: Option D. -> Van der Waal's forces and dipole-induced-dipole interaction
Answer: (d).Van der Waal's forces and dipole-induced-dipole interaction
Question 403. The types of intermolecular forces are
  1.    Van der Waals's forces
  2.    dipole-dipole interaction
  3.    hydrogen bonding
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 404. The greater the difference between electronegativities the more is the
  1.    polarity
  2.    molarities
  3.    repulsion rate
  4.    attraction rate
 Discuss Question
Answer: Option A. -> polarity
Answer: (a).polarity
Question 405. Carbon monoxide is
  1.    polar
  2.    reactive with oxygen
  3.    reducing agent
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 406. Molecules which have permanent dipole are known as
  1.    polar
  2.    non-polar
  3.    dipolar
  4.    tripolar
 Discuss Question
Answer: Option A. -> polar
Answer: (a).polar
Question 407. Due to extensive hydrogen bonding, water has higher
  1.    enthalpy change only
  2.    boiling point only
  3.    freezing point
  4.    enthalpy change and boiling point
 Discuss Question
Answer: Option D. -> enthalpy change and boiling point
Answer: (d).enthalpy change and boiling point
Question 408. Solids are mostly denser than
  1.    liquids
  2.    gases
  3.    noble gases
  4.    alkalis
 Discuss Question
Answer: Option A. -> liquids
Answer: (a).liquids
Question 409. In ethane C₂H₄, the C-C form a
  1.    σ-bond
  2.    π-bond
  3.    covalent bond
  4.    electrovalent bond
 Discuss Question
Answer: Option A. -> σ-bond
Answer: (a).σ-bond
Question 410. At room temperature, Butane (C₄H₁₀) is
  1.    solid
  2.    liquid
  3.    gas
  4.    vapor
 Discuss Question
Answer: Option C. -> gas
Answer: (c).gas

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