विधुत रसायन Electrochemistry Objective Question chapter 3 | chemistry chapter 3 objective bihar board

3. विधुत रसायन Electrochemistry

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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

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–

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/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 ?

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👈

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

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?

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/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

(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?

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👈

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👈

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36.) Which of the following shows more oxidation state?

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 –

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?

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

विधुत रसायन Electrochemistry Objective Question chapter 3 | chemistry chapter 3 objective bihar board

3. विधुत रसायन Electrochemistry

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