Chemistry I X Electrochemistry

Chemistry I X Electrochemistry

1. Select a non conducting compound from the list given below:

a) Copper Sulphate
b) Molten NaCI
c) Sulphuric acid
d) Urea
2. In the electrolysis of acidified water hydroxyle ions move towards:

a) Both electrodes
b) Anode
c) Cathode
d) Battery
3. The branch of chemistry that deals the relationship between electricty and chemical reaction is called:

a) Nuclear Chemistry
b) Polymeric Chemistry
c) Non of these
d) Electro-Chemistry
4. The electrode on which positive ion of an electrolyte is discharged is called:

a) Battery
b) Cathode
c) Cell
d) Anode
5. In the electrolysis of sodium chloride , Sodium ion (Na+) move towards:

a) Cathode
b) Anode
c) Battery terminals
d) Both electrodes
6. Chemical energy is associated with:

a) Chemical reactions
b) Types of reaction
c) Physical nature
d) None of these
7. When a aqueous solution of copper sulphare is electrolysed, copper metal is deposited on:

a) Cathode
b) Bottom
c) Farad
d) Anode
8. Which compounds in molten state or in aqueous solution conduct electricity.

a) Non of these
b) Complex
c) Covalent
d) Ionic
9. The process of movements of ions of an electrolytes towards their relative electrodes on passing the electric current is called:

a) Diffusion
b) All of these
c) Effusion
d) Electrolysis
10. The melting point of sodium chloride ( NaCI) is:

a) 880 C
b) 800 o C
c) 1800 C
d) 780 C
11. The human heart, generally in whole day pumps more than ___________litres of blood.

a) 8000
b) 7000
c) 6,600
d) 6000
12. The flow of elctron is called:

a) Voltage
b) Potentail difference
c) Resistance
d) Electric current
13. Which one of the following will produce chlorine gas during the electrolysis:

a) Hydrocarbon
b) Copper Sulphare
c) Water
d) Sodium chloride
14. The chimcal compounds which do not conduct electricity in molten state or in aqueous solution are called:

a) Acids
b) Non-electrolytes
c) Salts
d) Bases
15. Dry cell is a:

a) Primary Cell
b) Fuel Cell
c) Secondry Cell
d) Solar Cell
16. The S.I unit of electric charge is:

a) Coulomb
b) Ampere
c) Faraday
d) Volt
17. Which of the following can conduct electricity in molten condition or through aqueous solution.

a) Sugar Solution
b) Petrol
c) Benzene
d) Electrolytes
18. Sugar, glucose, petrol and benzene which do not conduct electricity are called:

a) Ionic Compounds
b) Sensitive compounds
c) Non - electrolytes
d) Conductor
19. Ampere is the basic S.I unit of:

a) Electric Charge
b) Electric Current
c) Voltage
d) Electric Potential
20. Many metals are purified by:

a) Sublimation process
b) Alloying process
c) Mixixng process
d) The process of electrolysis
21. The cell used for the reaction occur by passing electric current is called:

a) Beaker
b) Trough
c) Chamber
d) Electrolytic cell
22. Sodium chloride (NaCI) melts at :

a) 800 o C
b) 1000 o C
c) 600 o C
d) 900 o C
23. Which of the following is a strong electrolyte.

a) Accetic Acid
b) Sodium chloride
c) Tartaric acid
d) Citric acid
24. The unit of electric charge is:

a) Ohms
b) Coulomb
c) Ampere
d) Volt
25. The first scientist which performed the electrolysis of water is:

a) Humphry Davy
b) Dalton
c) Bohr
d) Michael Faraday
26. Which one of the following is a conductor of electricity:

a) Benzene
b) Copper
c) Sugar
d) Solid Sodium chloride
27. Which electrodes are used in the electrolytic cell during the electrolysis of water:

a) Platinum
b) Non of these
c) Aluminium
d) Cabon
28. The S.I units of electrochemcal equivalent is:

a) Kg. C
b) gm / C
c) C / Kg
d) Kg / Coulomb
29. The cell used for the reaction occur by passing electric current is called:

a) None of these
b) Electrolytic Cell
c) Solar Cell
d) Dry Cell
30. The branch of chemistry which deals with the conversion of electrical energy into chemical energy and chmical energy into electrical energy is called:

a) Organic chemistry
b) Chemistry for life
c) Electro-chemistry
d) Bio-chemistry
31. In Faraday' first law of electrolysis W= Z A t, ' Z ' is called:

a) Electro-chemical equivalent
b) Mass of the substance
c) Time in seconds
d) Electric current
32. A substance through which electricity can not pass is called:

a) Non- electrolyte
b) Non-conductor
c) Conductor
d) Electrolyte
33. The process which is used to protect, the baser metals from corrosion is called:

a) Plastic
b) Electrolysis
c) Electroplating
d) Colour
34. Choose from the following an electrolytes.

a) Petrol
b) Sugar
c) Urea
d) Copper sulphate
35. Electrolytic cells convert energies, which energy is converted into electrical energy in an electrolytic cell:

a) Potential energy
b) Thermal energy
c) Electrical energy
d) Chemical energy
36. A chemical reactin in which electrons are lost, is called:

a) Reduction
b) Both oxidation and reduction
c) Oxidation
d) Auto - reduction
37. One Faraday =

a) 9500 Coulombs
b) 9600 Coulombs
c) 96,500 Coulombs
d) 9700 Coulombs
38. All acids, base and salts are:

a) Gases
b) Electrolytes
c) Non-electrolytes
d) Solids
39. A solution of _______________is used as electrolyte in Nickel plating.

a) AgNO3
b) H2SO4
c) NiSO5
d) NiSO4
40. The vessel in which chemicals produce electricity is called:

a) Cell
b) Beaker
c) Flask
d) Gas jar
41. The lose of electrons from a substnce is called:

a) Thermal reaction
b) Oxidation reaction
c) None of these
d) Reduction reaction
42. The electrical process which is used to coat one metal onto another metal is called:

a) Coating
b) None of these
c) Electrolysis
d) Electroplating
43. Electrochemical cells:

a) Convert chemical energy into electrical energy
b) Do not convert energy
c) Mechanical energy into chemical energy
d) Electrical energy into chemical energy
44. Which of the following scientist confirmed the formula of water by electrolysis .

a) Current
b) Faraday
c) Proust
d) Humphry Davy
45. Blister copper is purified by the process of:

a) Electrolysis
b) Sublimation
c) Condensation
d) Filteration
46. Chemical energy and electrical energy both are:

a) Inter convertible to each other
b) Always same in any type of reaction
c) Can be converted into heat only
d) Not inter convertible
47. Sodium is extracted by the electrolysis of soduim chloride at cathode by a process called:

a) Solvay process
b) Bayer process
c) Fisher method
d) Down's process
48. In the electrolysis of NaCI chlorine gas is liberated at:

a) Any electrode
b) Both electrodes at a time
c) Cathode
d) Anode
49. Lead-storage battery is a:

a) Secondry Cell
b) Non of these
c) Primary cell
d) Dry cell
50. Sodium chloride does not conduct electricity:

a) None of these
b) In solid state
c) In molten state
d) In ionic form
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