問題一覧
1
In nickel-cadmium batteries, anode will be
B. Cd
2
There __ types of capacitors so far
B. 3
3
A fuel cell is sued to convert chemical energy into
C. Electrical energy
4
Which of the following cathodic reaction does not occur due to release of electrons at the anode?
A. Oxygen absorption
5
It is the ability of the sensor to indicate the same output over a period of time for a constant input
A. Stability
6
The omplete equipment of ‘electrolysis’ is known as
A. Electrolytic cell
7
Which of the following is (are) renewable resource(s)
D. all of the above
8
The type of reaction in a fuel cell is not determined by
D. Catalytic effects of reaction container
9
For electrolysis to work, used compound should be a
B. Conductor
10
There __ types of transducer in biosensors
C. 3
11
Photovoltaic cell converts solar energy into
B. electric energy
12
In a pseudo capacitor, the electrodes are made by
D. Metal oxides or conducting polymer
13
The synthesis of graphene by SiC can be performed by
A. High temperature
14
During charging of lead acid battery, the active materials on the positive and negative plates are?
C. lead peroxide and lead
15
Which of the following is a nonrenewable energy resource?
D. Coal
16
Which of these carbon allotropes can be fromed by graphene?
D. All of the above
17
Hydrogen can be produced from hydrocarbon by which method
D. All of the mentioned
18
The ohm is the unit of capacitance.
B. False
19
The conversion of energy takes place by reacting two elements i.e.
A. Hydrogen and oxygen
20
Energy is stored by a capacitor in a magnetic field
B. False
21
The structure of a capacitor is comprised of
D. All above
22
Graphene
D. All of the above
23
THe electrolytic decompostion of water gives H2 and O2 in the ratio of
B. 2:1 by volume
24
What type of energy is derived from sunlight?
A. solar energy
25
The fist glucose sensor was discovered by
A. Clark
26
During cracking of Natural gas, what is porduced?
C. Both C and H2
27
Graphene is applied for smart window becauses of
D. All of the above
28
What is the most abundant greenhouse gas is the atmosphere?
C. Water vapor
29
What is the principal factor for Electrolysis of water?
D. All of the mentioned
30
The only by-product of fuel cell is
B. Water
31
Wood is a renewable resource?
A. Ture
32
Wind turbines, solar panels, and geothermal are examples of “renewable” energy because
B. Energy from the wind, sun or ground does or run out
33
When graphene was first isoated in the lab, what technology did the researchers use?
B. Scotch tape
34
Compared to batteries, supercapacitors are
D. All above
35
Nuclear Energy is a Renewable Energy
B. Flase
36
Hydrogen gas is the lightest gas?
A. Ture
37
In Lithium-ion Polymer batteries, anode will be
A. Carbon
38
The most common isotope of hydrogen is protium, which has
B. 1 proton and 0 neutrons
39
The output of voltage of a nickel-metal hydride secondary battery is
A. 1.2V
40
An electric double layer capacitor has
C. Higher power density than pseudo capacitor
41
The synthesis of graphene by CVD can produce graphene having
D. All of the above
42
Blood glucose level measurement device uses a biosensor works on the principle of electrochemical
A. True
43
The charge storing mechanism of hybrid capacitor based on
C. Combination of double latyer capacitor and pseudo capacitor
44
What is graphene?
A. The name for a honeycomb sheet of carbon atoms.
45
Which type of reaction occurs in anodic areas?
A. Oxidation
46
The Inernational Renwable Agency(IRENA) was formed in?
B. 2009
47
The synthesis of graphene can be conducted by
D. All of the above
48
Energy resources derived from natural organic materials are called
C. biomass
49
The element sumbol for hydrogen is
B. H
50
Which is NOT an example of renewable energy?
C. Natural Gas
51
One advatage of fuel cell is that it is
B. Pollution free
52
Which method is best for small plants for H2 production?
A. Electrolysis
53
Home blood glucose sensor works on which principle?
B. electochemical
54
In an electric double capacitor, the electrodes are made by:
B. Porous carbon
55
The world faces an energy crisis because
D. All of the above
56
The charge storing mechanism of electric double layer capacitor based on
A. Absorbing electrolyte ions onto the surface of the electrode
57
Which of the following statements is TRUE?
E. All of the above
58
Capacitor stores which type of energy?
C. potential energy
59
In an electrolytic cell the electrode at which the electrons enter the solution is called the ___ : the chemicla change that occurs at this electrode is called ___.
D. Cathode, reduction
60
When and where was graphene first isolated in the lab?
B. 2004 in Manchester
61
Which of the following is used as fuel for transportation?
A. ethanol
62
The main role of solar panel is to
A. Convert sunlight to electricity
63
A hydrid capacitor has
D. All above
64
The synthesis of graphene by chemical method can use
B. Oxidizing agents
65
The output of voltage of a nickel-Cadmium secondary battery is
A. 1.2V
66
Plant material, manure, and any other matter that are used as sources for?
A. Biomass fuels
67
What is the voltage output of hydrogen-oxygen fuel cell?(in V)
A. -1.23
68
A. Graphene sheet differs from the framework of a fullerene because
C. The graphene sheet consists of Cn rings in which n = 6, but in fullerenes n = 5 and 6
69
Which of its properties makes graphene such and amazing material?
D. All of the above
70
Biomass can be converts solar energy into
D. all of the above
71
The disadvantages of supercapacitor are
D. all above
72
How many are there common secondary batteries today?
C. 7
73
Following is true for biofuels?
A. Their contribution in reduction in CO2 emissions
74
In Lithium-Polymer batteries, anode will be
B. Li
75
A prseudo capacitor has
A. Higher energy density than EDLCs
76
The output of voltage of a lead-acid secondary battery sis
D. 2V
77
What is the limitation of CVD methd for sunthesis of graphene?
D. All of the above
78
The photovoltaic system consist of
A. Solar panel, battery, Regulator, load.
79
Graphene consists
A. entirely of carbon
80
The cost of hydrogen depends on what?
D. All of the mentioned
81
The output of voltage of a lithium secondary battery is
C. 4V
82
How many are there common lithium secondary batteries today?
A. 3
83
Home blood glucose mesurment devices measure the glucose level through non-invasive method
B. False
84
In lithium-ion batteries, anode will be
B. Carbon
85
In nickel-metal hydrides batteries, anode will be
C. MH
86
During recharging of lead acid battery, the active materials on the positive and negative plates are?
C. lead peroxide and lead
87
Who first discovered graphene?
D. Andre Geim and K. Novoselov
88
When water is electrolyzed, the gas collected at cathode, is
C. Hydrogen
89
Unrechargable batteries are suitable for electric vehicle?
A. True
90
Graphene is a
C. Two-dimensional(2D) material
91
Why is it important to save energy in our daily lives?
D. We need to protect our environment for the future
92
The charge storing mechanism of pseudo capacitor based on
B. Redox reaction at the surface of the electrode
93
Which of the following is the disadvantage(s) of hydrogen?
D. All of the mentioned
94
The advantages of supercapacitor are
D. All above
95
What is one disadvantage of coal?
A. Coal produces air pollution
96
The product of the reactant I.e.hydrogen and oxygen, is
A. Water
97
Capacitor is device used to ___
A. store electrical energy
98
The current flow through electroyte is due to the movement of?
A. Ions
99
The reation of H2 gas with oxygen gas to form water is an example of
D. All of these reaction
100
The ability to give same output reading when same input value is applied repeatedly is known as
B. Repeatability