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