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MCQs

Total Questions : 622 | Page 2 of 63 pages
Question 11. During the elimination reaction of Halogenoalkanes, the reagent used is
  1.    ethanolic sodium hydroxide
  2.    ethanoic acid
  3.    ethanoate
  4.    ethane
 Discuss Question
Answer: Option A. -> ethanolic sodium hydroxide
Answer: (a).ethanolic sodium hydroxide
Question 12. If ethanol will be used in the elimination reaction of Halogenoalkanes it will produce
  1.    alkanes
  2.    alkenes
  3.    ketone
  4.    carbonyl
 Discuss Question
Answer: Option B. -> alkenes
Answer: (b).alkenes
Question 13. The enthalpy change of vaporization is lowest for
  1.    Helium (He)
  2.    Neon (Ne)
  3.    Argon (Ar)
  4.    Krypton (Kr)
 Discuss Question
Answer: Option A. -> Helium (He)
Answer: (a).Helium (He)
Question 14. Metals are good conductors due to
  1.    ionic lattices
  2.    crystalline lumps
  3.    mostly solids
  4.    localized electrons
 Discuss Question
Answer: Option D. -> localized electrons
Answer: (d).localized electrons
Question 15. What is true about metal atoms?
  1.    they lose their outer electrons only
  2.    they become positively charged only
  3.    they become negatively charged
  4.    they lose their outer electrons and become positively charged
 Discuss Question
Answer: Option D. -> they lose their outer electrons and become positively charged
Answer: (d).they lose their outer electrons and become positively charged
Question 16. The conduction of electricity in metallic bonding is due to presence of
  1.    protons
  2.    lattice
  3.    delocalized electrons
  4.    nucleus
 Discuss Question
Answer: Option C. -> delocalized electrons
Answer: (c).delocalized electrons
Question 17. The strength of metallic bonding also increases with the increase in
  1.    positive charge only
  2.    electron's mobility only
  3.    negative charge
  4.    positive charge and electron's mobility
 Discuss Question
Answer: Option D. -> positive charge and electron's mobility
Answer: (d).positive charge and electron's mobility
Question 18. The regular arrangement in which atoms are closely packed together is called a
  1.    lattice
  2.    crystal lattice
  3.    tetrahedral structure
  4.    octahedral structure
 Discuss Question
Answer: Option A. -> lattice
Answer: (a).lattice
Question 19. The electrons which are not associated with a single type of atom are termed as
  1.    spectators
  2.    delocalized
  3.    lone pair
  4.    mobile
 Discuss Question
Answer: Option B. -> delocalized
Answer: (b).delocalized
Question 20. Metallic bonding is very strong because of
  1.    lattice
  2.    volatility
  3.    electrostatic attraction
  4.    none of above
 Discuss Question
Answer: Option C. -> electrostatic attraction
Answer: (c).electrostatic attraction

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