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MCQs

Total Questions : 194 | Page 15 of 20 pages
Question 141. In limited supply of oxygen, the product formed is
  1.    CO
  2.    CO₂
  3.    H₂O₂
  4.    H₂O
 Discuss Question
Answer: Option A. -> CO
Answer: (a).CO
Question 142. The burning of any organic compound in the presence of oxygen is called
  1.    Hydration
  2.    Nitration
  3.    Combustion
  4.    Oxidation
 Discuss Question
Answer: Option C. -> Combustion
Answer: (c).Combustion
Question 143. During combustion, heat energy is
  1.    Absorbed
  2.    Released
  3.    Remains constant
  4.    Not affected
 Discuss Question
Answer: Option B. -> Released
Answer: (b).Released
Question 144. The ultimate products of combustion are
  1.    H₂O + CO₂
  2.    H₂ + CO
  3.    H₂O₂ + CO
  4.    All of above
 Discuss Question
Answer: Option A. -> H₂O + CO₂
Answer: (a).H₂O + CO₂
Question 145. The graph of cooling curve consists of two parts
  1.    Pouring temperature
  2.    Thermal arrest
  3.    Slanted area
  4.    Both a and b
 Discuss Question
Answer: Option D. -> Both a and b
Answer: (d).Both a and b
Question 146. Pouring temperature of the graph is the
  1.    Initial point
  2.    Final point
  3.    Intermediate point
  4.    None of above
 Discuss Question
Answer: Option A. -> Initial point
Answer: (a).Initial point
Question 147. Greater the strength of dipole-dipole forces, the values of thermodynamic parameters are
  1.    Weaker
  2.    Least
  3.    Greater
  4.    Equal
 Discuss Question
Answer: Option C. -> Greater
Answer: (c).Greater
Question 148. All these molecules have dipole-dipole forces, except
  1.    Chloroform
  2.    Acetone
  3.    Hydrochloric acid
  4.    Water
 Discuss Question
Answer: Option D. -> Water
Answer: (d).Water
Question 149. The attractive forces between oppositely charged ions are
  1.    Ion-dipole forces
  2.    Dipole-dipole forces,
  3.    Hydrogen bonding
  4.    London dispersion forces
 Discuss Question
Answer: Option B. -> Dipole-dipole forces,
Answer: (b).Dipole-dipole forces,
Question 150. The unit of standard enthalpy of reaction is
  1.    Kjmol
  2.    KJ/mol
  3.    Kcal/mol
  4.    Kg/mol
 Discuss Question
Answer: Option B. -> KJ/mol
Answer: (b).KJ/mol

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