Question 5 :
The source of energy of the hot water spring is geothermal energy. <br><br>
Question 6 :
The air pollution caused by the internal combustion engine vehicles can be reduced by using :
Question 8 :
Which of the following is / are disadvantage of building large dams for generating hydro electric power?
Question 10 :
The group of solar cells connected in a specific pattern to produce desired magnitude of electric current is called :<br/>
Question 15 :
The use of conventional sources of energies is not responsible for:<br/>
Question 18 :
The disposal of waste produced in a nuclear power plant is difficult because they are:
Question 20 :
.......... is formed by the transformation of trees buried inside the earth millions of years ago.
Question 24 :
The gas obtained from biomass for generating heat energy is :<br>
Question 25 :
Which of the following devices does not make use of solar energy directly?
Question 26 :
Which of the following is not a disadvantage of building large dams for generating hydroelectric power?
Question 27 :
The energy generated by hydel projects constitutes only ___  of the total energy in the country.
Question 29 :
The sources of energy which are being produced continuously in nature and which are inexhaustible are called:
Question 30 :
As the water is released through control valves, _______ of water changed to _______.
Question 31 :
Which one of the following is not a characteristic of a good fuel?
Question 33 : <div>Fill in the blank space by choosing the correct word. <br/></div>Coal and petroleum are commonly called .................... fuels.<br/>
Question 35 :
Which of the following is not a property of a good source of energy?
Question 37 :
Which of the following is an important source of light for us?
Question 40 :
One of the key factors involved in the choice of a source of energy is:
Question 41 :
The gas that is obtained by the fermentation of biomass is :
Question 42 :
What are built near seashores to collect water which comes during high tide?<br>
Question 44 :
Which of the following is not an advantage of hydro energy?
Question 48 :
Which of the following is not a limitation of hydel energy?
Question 49 :
<span>The energy of tides and currents in the ocean can be converted into electrical energy, such energy is known as:</span>
Question 54 :
Which of the following are characteristics of a good source of energy?
Question 57 :
Arrange the following steps of conversion of ocean thermal energy into electricity, in a proper sequence.<br/>(a) The vapour of ammonia or CFC is passed over the turbines of generators.<br/>(b) The hot water from the ocean is used to vapourise the liquid like ammonia or CFC.<br/>(c) Cold water from the ocean depths is used to cool the vapour again into liquid.<br/>(d) This cold liquid is again vapourised and the process continues.<br/>
Question 61 :
What is the correct sequence from the smallest to the largest grain of the following types of clastic rocks?
Question 64 :
Why are a large number of solar cells are joined in a solar panel?
Question 66 :
The sources of energy which are being produced continuously in nature and are inexhaustible, are called
Question 67 :
Which of the following is not a consequence of exploiting the sources of energy?
Question 68 :
Which of the following can't be used to make a solar cell?
Question 70 :
Among the following the sources of energy for which the sun is not a chief source of energy is ________.<br/>
Question 71 :
When compared to other kinds of energy-providing fuels like petrol, wood and nuclear reactors, hydro-electricity is better. Because it
Question 74 :
Arrange the following steps in the conversion of hydel energy to electricity in a proper sequence.<br>(a) Released water is made to fall on the blades of the turbines.<br>(b) Water in the dam is released.<br>(c) Water is collected in the dam.<br>(d) Potential energy is converted to kinetic energy.<br>(e) The armature of the electric generator rotates to produce electricity.<br>
Question 75 :
At present, the contribution of hydroelectricity to the total power generation in India is
Question 77 :
Boojho lives in a small village in Himachal Pradesh, which is an inaccessible hamlet due to the mountainous terrain. Which energy source is suitable for his village?
Question 79 :
What is the daily average solar energy received by India under clear cloudless conditions?
Question 81 :
Ram uses bicycle to travel and Shyam uses bike to travel. <br/>Who among them uses energy wisely? Explain.
Question 82 :
In ancient times, _____________ was the most common source of heat energy.
Question 84 :
Solar cookers are more useful in cloudy weather. The statement given is -
Question 85 :
Solar cooker consist of a box which is painted black from inside for the following reason - 
Question 86 : <div>State true or false.</div>A good source of energy would be one which would do a little amount of work per unit volume or mass. 
Question 87 :
_________ left behind in a bio-gas plant is used as an excellent manure.
Question 89 :
It is estimated that during a year India receives the energy equivalent to more than _____________.
Question 91 :
Artificial satellites and space probes use which of the following as a source of energy?
Question 92 :
Which material is used for the interconnection of different solar cells to build a solar panel?
Question 93 :
Which of the following sources of energy is used in our daily life?<br>
Question 95 :
Besides being used directly for various purposes like cooking and fueling, fossil fuels are used for generating electricity. Is the statement -
Question 96 :
Large eco-systems are destroyed when submerged under the water in dams. The submerged vegetation rots and give rise to a green house gas named ________.
Question 97 :
Which of the following is true about solar panels with respect to other sources of energy?
Question 98 :
Which is the most common source of electrical energy in India?
Question 99 :
Why are we looking at alternate sources of energy like bio-mass and wind energy?
Question 100 :
The function of the glass sheet in a solar cooker is
