विधुत रसायन Electrochemistry Objective Question chapter 3 | chemistry chapter 3 objective bihar board
3. विधुत रसायन Electrochemistry
PDF के लिए 9142529134 Chemistry Chapter-3
1.) विलयन की चालकता समानुपाती होता है–
तनुता के
आयनों की संख्या के
विलयन का आयतन के
विधुत घनत्व
2.) फैराडे का विद्युत विच्छेदन का द्वितीय नियम संबंधित है–
धनायन के परमाणु संख्या के
विद्युत अपघट्य के समतुल्य भार से
ऋणायन के परमाणु संख्या के
धनायन के वेग से
3.) निम्नलिखित में से कौन द्वितीयक सेल है ?
लेकलांशे सेल
लेड स्टोरेज बैटरी
सान्द्रण सेल
इनमें से सभी
4.) निम्न में सबसे अच्छा विद्युत का सुचालक हैं–
NaCl
ग्रेफाइट
हीरा
सोडियम
5.) निन्नलिखित में से प्रबल ऑक्सीकारक है–
Br2
I
Cl2
F2
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6.) वैधुत अपघट्य सेल में इलेक्ट्रॉन जिस इलेक्ट्रोड से घोल में प्रविष्ट करता है उसे कहते है ?
कैथोड
एनोड
एनोड या कैथोड में कोई
इनमें से कोई नहीं
7.) एक फैराडे विधुत धारा प्रवाहित करने पर प्राप्त मात्रा होगी–
एक ग्राम समतुल्य
एक ग्राम मोल
विधुत रासायनिक तुल्यांक
आधा ग्राम समतुल्यांक
8.) विद्युत -अपघटन के नियम दिए थे–
लेमार्क
ऑस्टवोल्ड ने
फैराडे
आरहिनियस ने
9.) किसका आक्सीकरण विभव सबसे अधिक है–
Zn
Cu
Ag
Mg
10.) विद्युत-अपघटनी चालकता मापक है–
प्रतिरोध का
विभव का
सांद्रता का
आयनन का
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11.) विद्युत रासायनिक तुल्यांक का मात्रक है–
ग्राम
ग्राम/एम्पियर
ग्राम/कुलम्ब
कुलम्ब/ग्राम
12.) गैल्वेनिक सेल में एनोड होता है—
ऋणात्मक इलेक्ट्रोड
धनात्मक इलेक्ट्रोड
उदासीन इलेक्ट्रोड
इनमें से कोई नहीं
13.) सेल जिसमें रसायनिक ऊर्जा , विधुत ऊर्जा में बदलती है उसे कहते हैं ?
विधुत अपघटनी सेल
गैल्वेनिक सेल
चालकता सेल
इनमें से सभी
14.) एक फैराडे होता है –
96000 N
96500 कुलम्ब लगभग
96500 कुलम्ब
इनमें से कोई नहीं
15.) फैराडे की इकाई है—
एम्पियर
C
C/mol
C/sec
16.) विधुत धारा जब किसी चालक से इलेक्ट्रॉनों के द्वारा प्रवाहित होती है , तो चालक को कहते हैं ?
धात्विक चालक
विद्युत-अपघट्य चालक
कुचालक
इनमें से कोई नहीं
17.) सेल स्थिरांक है –
l/a
a/l
a×l
a+l
18.) विधुत- अपघटन में निक्षेपित आयनों की मात्रा निर्भर नहीं करती आती है–
प्रतिरोध पर
समय पर
विधुत रासायनिक तुल्यांक
विधुत-धारा पर
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19.) विधुत अपघटन का उपयोग होता है ?
विधुत शोधन में
विधुत लेपन में
(A) तथा (B) दोनों
इनमें से कोई नहीं
20.) निम्न में से कौन एक अवरोधक है–
ग्रेफाइट
एल्युमिनियम
डायमंड
सिलिकॉन
21.) जंग लगने से बचने के लिए कौन सी धातु ऑक्साइड का बचाऊ सतह बनाता है ?
Cu
Ag
Au
Al
22.) द्रवित सोडियम क्लोराइड के विधुत अपघटन से कैथोड पर मुक्त होता है ?
क्लोरीन
सोडियम
सोडियम अमलगम
हाइड्रोजन
23.) लोहा का संरक्षण रोकने का सबसे अच्छा तरीका है ?
आयरन कैथोड बनाकर
खारे जल में इसे रखकर
इनमें से दोनों
इनमें से कोई नहीं
24.) तनुता बढ़ाने पर, विशिष्ट चालकत्व–
बढ़ता
घटता
बढ़ या घट सकता है
इनमें से कोई नहीं
25.) विद्युत अपघटन में ऑक्सीकरण होता है–
एनोड पर
कैथोड पर
एनोड एवं कैथोड पर
इनमें से कोई नहीं
26.) तनुता बढ़ाने पर, मोलर चालकता–
बढ़ता
घटता
बढ़ या घट सकता है
इनमें से कोई नहीं
27.) सेल स्थिरांक का मात्रक है —
C/m
Cm
वोल्ट
फैराडे
28.) विधुत रासायनिक सेल में एनोड होता है—
ऋनात्मक
धनात्मक
धनात्मक और ऋनात्मक
इनमें से कोई नहीं
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29.) प्रबल विद्युत अपघट्य है वे जो:-
जल में शीघ्र घुल जाते हैं
विद्युत प्रवाहित करते हैं
उच्च तनुता पर आयनों में विभक्त हो जाते हैं
सभी तानुताओं पर आयनों में विभक्त हो जाते हैं
30.) फैराडे का प्रथम नियम है–
M = zst
M = ZCT
M = ZT
इनमें से कोई नहीं
31.) वैधुत अपघटनी सेल में एनोड होता है–
ऋनात्मक
धनात्मक
धनात्मक और ऋनात्मक
इनमें से कोई नहीं
3. Electrochemistry Electrochemistry
️ 9142529134 Chemistry Chapter-3 for PDF
1.) The conductivity of the solution is proportional to-
of dilution
the number of ions
volume of solution
electrical density
2.) Faraday’s second law of electrocution is related to-
the atomic number of the cation
by equivalent load of electrolyte
the atomic number of the anion
with the speed of cation
3.) Which of the following is a secondary cell?
leclanche cell
lead storage battery
concentration cell
all of which
4.) Which of the following is the best conductor of electricity?
NaCl
graphite
Diamond
sodium
5.) Which of the following is the strongest oxidising agent?
Br2
I
Cl2
F2
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6.) The electrode through which electrons enter the solution in an electrolyte cell is called?
cathode
anode
either anode or cathode
none of these
7.) The quantity obtained by passing a Faraday electric current will be-
one gram equivalent
one gram mole
electrochemical equivalent
half gram equivalent
8.) The laws of electrolysis were given by-
Lamarck
Ostwold
Faraday
Arrhenius
9.) Whose oxidation potential is highest?
Zn
Cu
Ag
Mg
10.) The measure of electrolytic conductivity is-
of resistance
of potential
of concentration
of ionization
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11.) The unit of electrochemical equivalent is-
Gram
grams/ampere
gram/culumb
coulomb/gram
12. The anode in a galvanic cell is—
negative electrode
positive electrode
neutral electrode
none of these
13. The cell in which chemical energy is converted into electrical energy is called?
electrolytic cell
galvanic cell
conductivity cell
all of which
14.) One Faraday is –
96000 N
96500 coulomb approx
96500 coulomb
none of these
15.) The unit of Faraday is—
ampere
C
C/mol
C/sec
16.) When electric current flows through a conductor through electrons, then the conductor is called?
metallic conductor
electrolyte conductor
Insulator
none of these
17.) Cell constant is –
l/a
a/l
a×l
a+l
18.) The amount of ions deposited in electrolysis does not depend on-
on resistance
on time
electrochemical equivalent
on current
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19.) Electrolysis is used for?
in electroplating
in electroplating
(A) and (B) both
none of these
20.) Which of the following is a blocker-
graphite
aluminum
Diamond
silicone
21.) Which metal forms a protective surface of the oxide to avoid rusting?
Cu
Ag
Au
Al
22.) On the electrolysis of liquefied sodium chloride is liberated at the cathode?
chlorine
sodium
sodium amalgam
hydrogen
23.) The best way to prevent iron conservation is?
making iron cathode
placing it in salt water
both of these
none of these
24.) On increasing the dilution, the specific conductivity-
growing
decreasing
may increase or decrease
none of these
25.) Oxidation takes place in electrolysis –
at the anode
at cathode
at anode and cathode
none of these
26.) On increasing the dilution, the molar conductivity—
growing
decreasing
may increase or decrease
none of these
27.) The unit of cell constant is—
C/m
Cm
Voltage
faraday
28.) The anode in an electrochemical cell is—
negative
positive
positive and negative
none of these
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29.) Strong electrolytes are those which:-
dissolves quickly in water
conduct electricity
splits into ions at high dilution
splits into ions at all dilutions
30.) Faraday’s first law is-
M = zst
M = ZCT
M = ZT
none of these
31.) The anode in an electrolytic cell is-
negative
positive
positive and negative
none of these
32.) For redox reaction to take place in the cell, what should be the electromotive force of the cell?
positive
negative
steady
Zero
33.) Cell reaction occurs spontaneously when-
E is positive
E is negative
G is positive
G is negative
34.) Conducting electricity in solution-
electrolyte
electrolytic
H2O molecule
copper cable
35.) Which of the following halogen acid is the strongest reducing agent?
HCl
HBr
HI
HF
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36.) Which of the following shows more oxidation state?
Sc
Fe
Zn
Mn
37.) The rate of reaction of a substance depends on which of the following?
atomic mass
equivalent mass
molecular mass
active volume
38.) KCl is used in salt bridge because-
it is a valid electrolyte
it is a good conductor of electricity
It forms a thick solution with gelatin
The conductivities of K+ and Cl- ions are almost equal.
39.) The value of m in a strong electrolyte–
increases on dilution
decreases on dilution
The dilute remains stable when eaten
all of which
40. What is an essential component in photographic film plate?
silver nitrate
silver bromide
Sodium chloride
none of these
41.) Highest conductivity is—
Iron
Sleep
silver
silicone
42. What is the inverse of resistance called?
conductivity
resistivity
good conductor
none of these
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43.) At the equilibrium state of a cell reaction, the force of the cell’s electromotive force (EMF) is?
positive
negative
Zero
none of these
44.) The electrode potential of a half cell depends on –
on the nature of metals
on the concentration of metal ions in the cell
at temperature
All of the above
45. The amount of ions deposited in electrolysis does not depend on—
on resistance
on time
on electric current
on the electrochemical equivalent
46.) 96500 Coulomb electricity is liberated from a solution of CuSO4 –
63.5 grams copper
31.76 grams copper
96500 grams copper
100 grams copper
47. The molecular number property of a dilute solution depends on-
on the nature of the solute
on the nature of the solvent
on the number of particles of the solute
on the number of particles of the solvent
48.) The worst conductor of the following is-
CH3COONa
C2H5OH
NaCl
KoH
49.) The unit of specific conductivity is-
Ohm cm-1
Ohm cm-2
Ohm-1 cm-1
none of these
50.) The unit of molar conductivity—
Ohm-1 mol-1
Ohm-1
Ohm-1 cm-1
Ohm-1 cm2 mol-2
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51.) Conductivity of metal with rise in temperature–
happens
increases
may increase or decrease
none of these
52. Kolrausch’s law is
53.) The unit of equivalent conductivity is-
Ohm-1 cm2 equv-1
Ohm-1
Ohm-1 cm-1
Ohm-1 cm2 mol-2
54. The increase in molar conductivity in an electrolyte solution by dilution is due to—
increase in ionic attraction
increase in molecular attraction
increase in the amount of electrolysis
all of which
55. When a current of one ampere flows through a conductor for one second, then this amount of electricity is known as-
from faraday
from coulomb
from emf
from om
56.) When an aqueous solution of sodium sulphate is electrolysed till the cathode gets –
Na
h2
So2
So3
57.) An electrolyte—
Complex ion is formed in solution
Gives ions only on passing electricity
Contains ions even in solid state
The ion only when dissolved in water gives
58.) An electrolyte is one which—
current flows
Is capable of ionization on passing electric current
splits into ions when dissolved in solvent
none of these
59.) On dissolving electrolyte in water, it splits into ions because-
they are temporary
water dissolves them
repulsion force increases
The electrostatic force of attraction is broken by water
60.) Strong electrolytes are those which-
dissolves quickly in water
make electricity flow
splits into ions at high dilution
splits into ions at all dilutions
61.) In which solution does a Faraday electric current deposit one gram of metal?
AuCl3
BaCl2
CuSO4
NaCl
62.) The electrode potential of a half cell depends on –
on the nature of the metal
on the concentration of metal ions in the cell
at temperature
none of these
63.) If the salt bridge is suddenly removed from a cell, then the cell voltage –
growing
decreases
goes to zero
It may increase or decrease depending on the cell response.
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64.) When the lead storage battery is charged-
lead dioxide dissolves
Sulfuric acid is converted to
Lead metal is layered with lead sulphate
The concentration of sulfuric acid decreases
65.) Which of the following metals does not react with copper sulphate?
Fe
Zn
Mg
Ag
66.) The solution of which of the following substances can be kept safe in copper utensils?
ZnSo4
AgNO3
AuCl3
none of these
67. The most suitable metal for plating on iron which acts against protection?
nickel plating
copper plating
tin plating
zinc plating
68.) The quantity obtained by passing a Faraday electric current is called?
one gram equivalent
one gram mole
electrochemical equivalent
half gram equivalent
69.) The value of specific conductivity will be equal to the value of conductivity when –
the value of the cell constant is zero
the value of the cell constant is one
when the electrode is copper
when the size of the cell is too large
70.) Oxygen and reduction respectively in electrolysis take place-
anode and cathode
cathode and anode
on both electrodes
none of these