,2
, NCERT LINE BY LINE QUESTIONS
(1.) In hydrogen‐oxygen fuel cell, combustion of hydrogen occurs to
(a.) Produce high purity water (b.) Create potential difference between two
electrodes
(c.) generate hear (d.) remove adsorbed oxygen from electrode
surface
(2.) Fluorine is a best oxidising agent because it has
(a.) highest electron affinity (b.) highest E°red
(c.) highest E ooxid (d.) lowest electron affinity
(3.) (180.) E for the half cell Zn / Zn is −0.76 emf of the cell
o 2+
Zn / Zn 2+ (1M ) ‖2H + (1M ) | H 2 (1 atm ) is
(a.) −0.76V
(b.) +0.76
(c.) −0.38V
(d.) +0.38V
(4.) The electrolyte used in Leclanche cell
(a.) Paste of KOH and ZnO (b.) 38% solution of H 2SO 4
(c.) Moist paste of NH 4Cl and ZnCl2 (d.) Moist NaOH
(5.) Assertion: E Ag+ /Ag increases with increase in concentration of Ag + ions.
Reason: E Ag+ /Ag has a positive value.
(a.) Both and R are true and R is correct (b.) Both A and R are true and R is not correct
explanation of A. explanation of A.
(c.) A is true but R is false. (d.) Both A and R are false.
(6.) Hydrogen electrode is placed in the solution where pH is 10. The potential of this electrode
will be
(a.) +0.591 V (b.) −0.591 V
(c.) 0V (d.) none of these
(7.) For a reaction
A ( s ) + 2B+ → A 2+ + 2B ( s )
K C has been found to be 1012 . The E ocell is
(a.) 0.354 V (b.) 0.708 V
(c.) 0.0098 V (d.) 1.36 V
(8.) The order of equivalent conductance at infinite dilution of LiCl , NaCl and KCl ?
(a.) LiCl > NaCl > KCl (b.) KCl > NaCl > LiCl
(c.) NaCl > KCl > LiCl (d.) LiCl > KCl > NaCl
(9.) The reference electrode is made by using
9
, (a.) ZnCl2 (b.) CuSO 4
(c.) HgCl2 (d.) Hg 2Cl2
(10.) Which one of the following is a strong electrolyte?
(a.) Ca ( NO3 ) 2
(b.) HCN
(c.) H 2SO3 (d.) NH 4OH
(11.) Which of the following decrease on dilution of electrolyte solution?
(a.) equivalent conductance (b.) molar conductance
(c.) specific conductance (d.) conductance
(12.) The variation of equivalent conductance of strong electrolyte with concentration is correctly
shown in which figure:
(a.) (b.)
(c.) (d.)
(13.) The quantity of charge required to obtain one mole of aluminum from Al2O3 is
(a.) 1P (b.) 6 F
(c.) 3 F (d.) 2 F
(14.) Electrolysis of H 2SO 4 (conc.) gives the following at anode?
(A) H 2 (B) O 2 (C) H 2S2O3 (D) H 2S2O8
X ×1000 2 ×1000
(a.) Λ= (b.) Λ=
0.1 X × 0.1
X ×1000 0.5
(c.) Λ= (d.) Λ=
0.5 1000X
(15.) Using the data given below find out the strong oxidising agent
E Cl O2 /Cr3+ = 1.33V E oCl /Cl− = 1.36V
2 7 2
E o
MnO 4 /Mn 2+
= 1.51V E o
Cr 3+ /Cr
= −0.74V
(a.) Cl−
(b.) Mn 2+
(c.) MnO −4
10
, NCERT LINE BY LINE QUESTIONS
(1.) In hydrogen‐oxygen fuel cell, combustion of hydrogen occurs to
(a.) Produce high purity water (b.) Create potential difference between two
electrodes
(c.) generate hear (d.) remove adsorbed oxygen from electrode
surface
(2.) Fluorine is a best oxidising agent because it has
(a.) highest electron affinity (b.) highest E°red
(c.) highest E ooxid (d.) lowest electron affinity
(3.) (180.) E for the half cell Zn / Zn is −0.76 emf of the cell
o 2+
Zn / Zn 2+ (1M ) ‖2H + (1M ) | H 2 (1 atm ) is
(a.) −0.76V
(b.) +0.76
(c.) −0.38V
(d.) +0.38V
(4.) The electrolyte used in Leclanche cell
(a.) Paste of KOH and ZnO (b.) 38% solution of H 2SO 4
(c.) Moist paste of NH 4Cl and ZnCl2 (d.) Moist NaOH
(5.) Assertion: E Ag+ /Ag increases with increase in concentration of Ag + ions.
Reason: E Ag+ /Ag has a positive value.
(a.) Both and R are true and R is correct (b.) Both A and R are true and R is not correct
explanation of A. explanation of A.
(c.) A is true but R is false. (d.) Both A and R are false.
(6.) Hydrogen electrode is placed in the solution where pH is 10. The potential of this electrode
will be
(a.) +0.591 V (b.) −0.591 V
(c.) 0V (d.) none of these
(7.) For a reaction
A ( s ) + 2B+ → A 2+ + 2B ( s )
K C has been found to be 1012 . The E ocell is
(a.) 0.354 V (b.) 0.708 V
(c.) 0.0098 V (d.) 1.36 V
(8.) The order of equivalent conductance at infinite dilution of LiCl , NaCl and KCl ?
(a.) LiCl > NaCl > KCl (b.) KCl > NaCl > LiCl
(c.) NaCl > KCl > LiCl (d.) LiCl > KCl > NaCl
(9.) The reference electrode is made by using
9
, (a.) ZnCl2 (b.) CuSO 4
(c.) HgCl2 (d.) Hg 2Cl2
(10.) Which one of the following is a strong electrolyte?
(a.) Ca ( NO3 ) 2
(b.) HCN
(c.) H 2SO3 (d.) NH 4OH
(11.) Which of the following decrease on dilution of electrolyte solution?
(a.) equivalent conductance (b.) molar conductance
(c.) specific conductance (d.) conductance
(12.) The variation of equivalent conductance of strong electrolyte with concentration is correctly
shown in which figure:
(a.) (b.)
(c.) (d.)
(13.) The quantity of charge required to obtain one mole of aluminum from Al2O3 is
(a.) 1P (b.) 6 F
(c.) 3 F (d.) 2 F
(14.) Electrolysis of H 2SO 4 (conc.) gives the following at anode?
(A) H 2 (B) O 2 (C) H 2S2O3 (D) H 2S2O8
X ×1000 2 ×1000
(a.) Λ= (b.) Λ=
0.1 X × 0.1
X ×1000 0.5
(c.) Λ= (d.) Λ=
0.5 1000X
(15.) Using the data given below find out the strong oxidising agent
E Cl O2 /Cr3+ = 1.33V E oCl /Cl− = 1.36V
2 7 2
E o
MnO 4 /Mn 2+
= 1.51V E o
Cr 3+ /Cr
= −0.74V
(a.) Cl−
(b.) Mn 2+
(c.) MnO −4
10
