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Resources » Articles/Knowledge Sharing » Entrance Exams »
Chemistry CET, Karnataka
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ELECTROCHEMISTRY
1. Electrolytic are found only among
a) metallic compounds b) carbon compounds
c) electrovalent compounds d) covalent compounds
2. The unit used to express conductivity is
a) ohm b) coulomb c) ampere d) ohm–1
3. Electrolysis of brine gives a mixture of
a) caustic soda and chlorine b) caustic soda, chlorine and hydrogen
c) caustic soda and hydrogen d) hydrogen, chlorine and oxygen
4. Which of the following alkali metal ions has lowest ionic mobility in aqueous solution
a) Na+ b) Li+ c) Cs+ d) Rb+
5. Ammonium ion is
a) both an acid and a base b) neither an acid nor a base
c) a conjugate base d) a conjugate acid
6. Which one of the following is not an amphoteric substance?
a) AlCl3 b) FeCl3 c) BF3 d) CH3COOH
7. Which of the following is a weak electrolyte?
a) Ammonium acetate b) Ammonium carbonate
c) Ammonium hydroxide d) Ammonium citrate
8. Aluminium chloride is a/an
a) Lewis base b) Lewis acid c) Arrhenius acid d) Bronsted – Lowry acid
9. When 9.6s coulombs of electricity is passed through a solution of silver nitrate (atomic mass of Ag = 108.0 gmol -1). The amount of silver deposited is
a) 6.4 mg b) 10.8 mg c) 21.2 mg d) 16.2 mg
10. The strongest bronsted base in the following anion is,
a) b) c) d)
11. Ammonia gas dissolves in water to for NH4OH. In this reaction water acts as,
a) an acid b) a base c) a conjugate base d) a non-polar solvent
12. Which one of the following is not a conductor of electricity?
a) solid NaCl b) Cu c) Fused NaCl d) Brine solution
13. Electrolysis of KCl. MgCl2. 6H2O gives
a) potassium only b) magnesium only
c) magnesium and chlorine d) potassium and magnesium
14. According two Lowry and Bronsted concept, the chloride ion in aqueous solution is,
a) a weak base b) a strong base c) a weak acid d) a strong acid
15. The unit of electricity is
a) ampere b) ohm c) volt d) coulomb
16. An example for a strong electrolyte is,
a) NH4OH b) c) CH3COONa d) sugar
17. The quantity of electricity required to liberate 112 cm3 of Hydrogen at STP from acidified water is,
a) 1 faraday b) 965 coulombs c) 86500 coulombs d) 0.1 faraday
18. An example for a Lewis acid is
a) calcium chloride b) aluminium chloride
c) magnesium chloride d) zinc chloride
19. Conjugate base of hydronium ion is
a) H2O b) OH (– ) c) H+ d) H (– )
20. NaOH is manufactured by electrolysis of brine solution. The products of the reaction are
a) Cl2 & H2 b) Cl2 and Na c) Cl2 and sodium amalgam d) Cl2 and O2
21. The conjugate base in the following reaction,
is
a) b) c) d)
22. The conductivity of a strong electrolyte
a) increase on dilution b) doesnot change on dilution
c) decreases on dilution d) depends on density.
23. Which of the following is example of Lewis acid?
a) FeCl3 b) C2H5ONa c) HCOOH d) HCl
24. Which of the following is a strong electrolyte?
a) H2SO3 b) NH4OH c) d) HCN
25. Electrolysis of molten NaCl leads to the formation of
a) sodium and oxygen b) sodium and hydrogen
c) hydrogen and oxygen d) sodium and chlorine
26. The concept that an acid is a proton donor and a base is a proton acceptor was introduced by
a) Arrhenius b) Bronsted- Lowry c) Lewis d) Faraday
27. The electrolytic conductance is a direct measure of
a) potential b) resistance c) concentration d) dissociation
28. Water is a
a) aprotic solvent b) amphiprotic solvent
c) prophilic solvent d) protophobic solvent
29. Which are of the following is a weak acid?
a) HCl b) HI c) HBr d) HF
30. Which of the following is not an example of a Lewis acid?
a) AlCl3 b) FeCl3 c) BF3 d) CH3COOH
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