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प्रश्न
State whether the following is True or False.
China, the USA, and Spain are major producers of wind energy.
पर्याय
True
False
उत्तर
True
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संबंधित प्रश्न
Which of the following is not a renewable source of energy?
(a) wind
(b) flowing water
(c) fossil fuels
(d) fuel wood
The calorific values of three fuels A, B and C are 33 kJ/g, 48 kJ/g and 150 kJ/g, respectively. A is solid, B is liquid and C is a gas at room temperature. One combustion, both A and B produce carbon dioxide while C explodes forming steam. B and C leave no residue after combustion while A leaves behind some solid residue. Which one of the three fuels is the most ideal? Give two reasons to support your answer.
Calorific value and ignition temperature of fuel X are 75 kJ/g and 20°C respectively. These values for fuel Y are 50 kj/g and 75°C respectively. On burning, the fuel Y produces only CO2while fuel X produces CO2 and CO. Which of the two is a better fuel? Give two reasons to support your answer.
What is the composition of liquefied petroleum gas (LPG)?
What is meant by conventional sources of energy? Write the names of two conventional sources of energy.
The aviation fuel which is used in the engines of jet aeroplanes is:
(a) diesel
(b) kerosene
(c) petrol
(d) CNG
Fossil fuels are energy rich compounds of an element X which were originally made by the plants with help of sun's energy.
Name the element X.
A substance X is added to LPG cylinders while filling so as to make the detection of leakage of LPG from the cylinder easy.
How does substance X make the detection of leakage of LPG easy?
Name the constituents of biogas.
Fill in the following blank with suitable word:
Biomass is another form in which ........... energy manifests itself.
Suggest a safe and efficient method for the disposal of biowastes and sewage materials. How is this method advantageous to us?
The source of energy of the sun is:
(a) conversion of hydrogen gas into helium
(b) conversion of carbon fuel into carbon dioxide
(c) burning of hydrogen gas present in the sun
(d) disintegration of uranium into barium and krypton
How long are the energy resources of the earth like coal, petroleum and natural gas expected to last?
Why is the use of wood as a fuel not advisable although wood is a renewable source of energy?
What do you know about wind energy?
Can you tell?
What are the non-conventional energy resources?
Can you tell?
Why should we maximise the use of non-conventional energy resources?
Name two forms of sea energy.
Which part of the solar cooker is responsible for greenhouse effect?
Various materials which are obtained from nature are called natural resources. Which of the following is not a natural resource?
