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question_answer1)
Consider the following statements and select the correct option which correctly identifies true (T) and false (F).
(i) Biogas is a combustible gas obtained by the anaerobic decompose of biogas. |
(ii) Producer gas is a mixer of flammable gas only. |
(iii) In a nuclear reactor, the moderator is Uranium-234. |
(iv) Lubricating oil has boiling range less than 300°C. |
A)
B)
C)
D)
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question_answer2)
Which of the following is incorrect statement regarding solar cooker?
A)
It does not require solar cells to convert solar energy into electrical energy. done
clear
B)
It is made from semiconductor material. done
clear
C)
It requires neither fuel nor attention while cooking. done
clear
D)
In it, cooking takes comparatively longer time. done
clear
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question_answer3)
Characteristics of two fuels X and Y are given in chart.
Characteristics | Fuel X | Fuel Y |
Calorific value | 50 kJ/g | 80 kJ/g |
Gases produced on burning | \[Co,S{{O}_{2}}\] | \[C{{O}_{2}}\] |
Ignition temperature | 20°C | 80°C |
Which fuel is ideal fuel?
A)
Fuel X, because it has lower ignition temperature and lower calorific value. done
clear
B)
Fuel Y, because it has higher ignition temperature and lower calorific value. done
clear
C)
Fuel X, because it has lower ignition temperature and is producing CO, and \[S{{O}_{2}}.\] done
clear
D)
Fuel Y, because it has higher calorific value and is producing only \[C{{O}_{2}}\] done
clear
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question_answer4)
Read the given statements and select the correct option.
Statement 1: The box type solar cooker can be used for baking. |
Statement 2: The box type solar cooker can be used to cook only those food materials which require slow heating. |
A)
Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. done
clear
B)
Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. done
clear
C)
Statement 1 is true but statement 2 is false. done
clear
D)
Statement 1 is false but statement 2 is true. done
clear
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question_answer5)
OTEC is stands for
A)
Oil Thermal Energy Control done
clear
B)
Ocean Tidal Energy Cells done
clear
C)
Ocean Thermal Energy Conversion done
clear
D)
Oil Transformation of Energy in Cells done
clear
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question_answer6)
Characteristics of two bombs P and Q are given in the chart below.
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Bomb P
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Bomb Q
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Mass Number :
|
235
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2
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Size :
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Large
|
Small
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Reaction :
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Nuclear fission
|
Nuclear fusion
|
Identify P and Q.
A)
P is hydrogen bomb and Q is atom bomb. done
clear
B)
P is atom bomb and Q is hydrogen bomb. done
clear
C)
Both P and Q are hydrogen bombs. done
clear
D)
Both P and Q are atom bombs. done
clear
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question_answer7)
In a nuclear reactor, the chain reaction stops if
A)
The control rods are fully inserted into the graphite done
clear
B)
A nuclear reactor has half the length of all its control rods inserted in graphite done
clear
C)
The reactor core suddenly gets too hot done
clear
D)
None of these done
clear
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question_answer8)
Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun's energy?
A)
Wind energy done
clear
B)
Ocean thermal energy done
clear
C)
Geothermal energy done
clear
D)
None of these done
clear
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question_answer9)
In nuclear power reactors,
(i) Uranium-235 is used as the fission material |
(ii) Graphite is used as a moderator |
(iii) Rods of cadmium are used to control the rate of nuclear reaction. |
Which of the above statements are correct?
A)
(i), (ii) and (iii) done
clear
B)
(ii) and (ii) done
clear
C)
(ii) and (iii) done
clear
D)
(i) and (iii) done
clear
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question_answer10)
Energy released in the fission of 1 kg of U-235 is equivalent to energy obtained from burning of coal weighing
A)
25 ton done
clear
B)
250 ton done
clear
C)
2500 ton done
clear
D)
25000 ton done
clear
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question_answer11)
Match column I with column II and select the correct option from the codes given below.
Column I | Column II |
(a) Slurry | (i) Ocean-thermal energy conversion plant |
(b) Magma | (ii) Wind energy farm |
(c) Ammonia | (iii) Bio-gas plant |
(d) Clusters | (iv) Geothermal power plant |
A)
(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii) done
clear
B)
(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii) done
clear
C)
(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii) done
clear
D)
(a)-(iii), (b)-(i), (c)-(ii), (d)-(iv) done
clear
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question_answer12)
Which of the following statements is not correct regarding the geothermal energy?
A)
Geothermal energy is most versatile. done
clear
B)
The source of energy is free and renewable. done
clear
C)
Electricity can be generated round the clock. done
clear
D)
Electricity produced is not cheap. done
clear
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question_answer13)
Main disadvantage of geothermal energy is
A)
Power production has lower efficiency? done
clear
B)
Geothermal energy cannot be easily transported done
clear
C)
Geothermal energy is not available everywhere done
clear
D)
All of these. done
clear
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question_answer14)
Direction: Read the passage carefully and answer the following questions.
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Ocean waves are derived sources of energy. Wind is the agent which transfer the Sun's energy to the surface of the sea. The unequal solar heating of the Earth generates wind and wind blowing over water generates waves. The energy possessed by ocean and sea waves is called wave energy.
|
Various systems have been designed to use wave energy for commercial production of electricity.
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Which of the following statements is wrong regarding to the wave energy?
A)
Wave energy is renewable source of energy. done
clear
B)
Wave power projects require a specific site. done
clear
C)
The total amount of power available in the world from wave energy is 2 to 3 million MW. done
clear
D)
Wave power project requires large land area. done
clear
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question_answer15)
Direction: Read the passage carefully and answer the following questions.
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Ocean waves are derived sources of energy. Wind is the agent which transfer the Sun's energy to the surface of the sea. The unequal solar heating of the Earth generates wind and wind blowing over water generates waves. The energy possessed by ocean and sea waves is called wave energy.
|
Various systems have been designed to use wave energy for commercial production of electricity.
|
The main disadvantage of wave energy is
A)
Wave power project is expensive done
clear
B)
Seabird population could be affected by wave energy structures done
clear
C)
Some designs are noisy done
clear
D)
All of these. done
clear
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question_answer16)
The process used to harness nuclear energy these days is
A)
Nuclear Fission done
clear
B)
Nuclear Fusion done
clear
C)
Alpha Decay done
clear
D)
Beta decay done
clear
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question_answer17)
Which part of the solar cooker is responsible for greenhouse effect?
A)
Coating with black colour inside the box done
clear
B)
Mirror done
clear
C)
Glass sheet done
clear
D)
Outer cover of the solar cooker done
clear
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question_answer18)
In a hydro power plant,
A)
Potential energy possessed by stored water is converted into electricity done
clear
B)
Kinetic energy possessed by stored water is converted into potential energy done
clear
C)
Electricity is extracted from water done
clear
D)
Water is converted into steam to produce electricity. done
clear
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question_answer19)
Match the column I with column II and select the correct option from the codes given below.
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Column I
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|
Column II
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(a)
|
Nuclear fusion
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(i)
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\[_{92}^{235}U+_{0}^{1}n\to \]\[_{56}^{141}Ba+_{36}^{92}Kr\] \[+\,3_{0}^{1}n+Q\]
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(b)
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Nuclear fission
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(ii)
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Liquid Uranium
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(c)
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Nuclear fuel
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(iii)
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Uranium 235
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(d)
|
Rocket fuel
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(iv)
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\[_{1}^{2}H+_{1}^{2}H\to \] \[_{2}^{4}He+Q\]
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A)
(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii) done
clear
B)
(a)-(iv), (b)-(i), (c)-(iii), (d)-(ii) done
clear
C)
(a)-(ii), (b)-(iv), (c)-(i), (d)-(iii) done
clear
D)
(a) -(iii), (b)-(ii), (c)-(iv), (d)-(i) done
clear
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question_answer20)
Fill in the blanks with most appropriate option.
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Bio-gas is an excellent fuel as i1 contains up to 75% ___(i)___ . It burns without smoke, leaves no residue like ash in wood. Its heating capacity is ___(ii)___ . The slurry left behind is removed periodically and used as excellent manure, rich in ___(iii)___ and ___(iv)___.
|
A)
B)
C)
D)
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