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MCQs

Total Questions : 425 | Page 40 of 43 pages
Question 391. The electronegativity of Aluminum is
  1.    2.55
  2.    1.61
  3.    2.2
  4.    3.16
 Discuss Question
Answer: Option B. -> 1.61
Answer: (b).1.61
Question 392. The Van der Waal's forces are directly proportional to the
  1.    temperature
  2.    pressure
  3.    electronegativity
  4.    boiling point
 Discuss Question
Answer: Option D. -> boiling point
Answer: (d).boiling point
Question 393. The electronegativity of Magnesium is
  1.    1.31
  2.    3.04
  3.    2.2
  4.    1.61
 Discuss Question
Answer: Option A. -> 1.31
Answer: (a).1.31
Question 394. Water has a high
  1.    surface tension
  2.    viscosity
  3.    density
  4.    all of above
 Discuss Question
Answer: Option D. -> all of above
Answer: (d).all of above
Question 395. Hydrogen bonding reduces the quality of water molecules to
  1.    repel
  2.    attract
  3.    compactly arrange
  4.    slide over each other
 Discuss Question
Answer: Option D. -> slide over each other
Answer: (d).slide over each other
Question 396. The boiling point of propane is
  1.    −43 °C
  2.    −42 °C
  3.    −40 °C
  4.    −24 °C
 Discuss Question
Answer: Option B. -> −42 °C
Answer: (b).−42 °C
Question 397. Tetrachloromethane is a
  1.    polar
  2.    non-polar
  3.    reactive
  4.    unreactive
 Discuss Question
Answer: Option B. -> non-polar
Answer: (b).non-polar
Question 398. The weak forces of attraction which exist in a molecule like Bromine are called
  1.    dipole moment
  2.    Van der Waals forces
  3.    hydrogen bonding
  4.    covalent bonding
 Discuss Question
Answer: Option B. -> Van der Waals forces
Answer: (b).Van der Waals forces
Question 399. Polythene is solid at
  1.    room temperature
  2.    all temperatures
  3.    high pressures
  4.    low pressures
 Discuss Question
Answer: Option A. -> room temperature
Answer: (a).room temperature
Question 400. A non-polar molecule of Bromine at room temperature is found in the state of
  1.    solid
  2.    liquid
  3.    gas
  4.    vapor
 Discuss Question
Answer: Option B. -> liquid
Answer: (b).liquid

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