Answer: It is used as rich organic manure. Disadvantages of Hydro power plant i Highly expensive to construct. These sources of energy are limited and cannot replenish on their own. Answer: A good fuel produces a huge amount of heat on burning, does not produce a lot of smoke, and is easily available. This can become significantly worse as the tendon repairs and scar tissue forms around the area creating a lack of blood flow. If any pdf file have any copyright voilation please inform us we shell remove that file from our website. Tidal energy : The gravitational pull of the moon on the rotating earth causes rise and fall in the level of water in the sea.
Answer: Geothermal hot spots are scattered. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number. Q6: Which of the following gases is a major constituent of biogas : Carbon monoxide, hydrogen, methane, carbon dioxide? Please keep a pen and paper ready for rough work but keep your books away. Answer: Natural gas can be used for heating and cooking food because it is a clean source of energy. .
Q8: Why the Geothermal energy is classified as a renewable sources of energy? Therefore, we have to conserve the energy sources. The largest component of biogas is a Helium b Oxygen c Nitrogen d Methane 2. Methane is the major component of bio gas. Healthy Elbow Elbow Pain Causes The most common cause of elbow pain I see on a daily basis is from overuse or repetitive motion from desk jobs. But burning of fossil fuels causes air pollution.
Answers: Glass plate is used to trap heat radiation which raises the temperature inside the box green house effect. Fission of radioactive substances is known as a Nuclear blast b Nuclear energy c Nucleolus energy d Source energy 8. Thermal power plants: i Use coal, petroleum and natural gas to produce thermal electricity. These fossil fuels are non renewable sources of energy and cause environmental problems due to pollution. Q11: What is the use of residual slurry in a biogas plant? Fossil fuels: were formed millions of years ago, when plants and animal remains got buried under the earth and were subjected to high temperature and pressure conditions. No negative marking for incorrect choice. And ………………… to produce thermal electricity.
This phenomenon is called high and low tides and difference in sea levels gives us tidal energy. Characteristics of a good fuel: iv High calorific value v Less smoke vi Less residue after burning vii Easy availability viii Inexpensive ix Easy to store and transport? Hence, we should look for alternate sources of energy. Answer: Methane around 75% Q7: Why are solar cookers covered with glass plate? Nuclear energy is also a better option but it carries the risk of leakage of radioactive radiations which has the potential to cause great and long-term damage. T Text book 2 Wind energy: o It can be converted into mechanical and electrical energy. T Text book i It is the most conventional renewable energy source obtained from water falling from a great height. Fossil fuels; like coal and petroleum are the main sources of energy for us. A turbine fixed at the opening of the dam converts tidal energy to electricity.
What are the four important fiber crops of India? Answer: The disadvantages of fossil fuels are as follows: a Burning of coal and petroleum produces a lot of pollutants causing air pollution. Cotton:- a India is known as the original home of the cotton plant. Q12: What kind of mirror concave, convex of plane should be best suited for use in a solar cooker? Tidal energy is harnessed by constructing a dam across narrow opening to the sea. Ans: a Revolution in agriculture-different type of tools invented like axe, hook, plough etc. Q9: What are the advantages of constructing dams for hydroelectric power station? Answer: Due to geological changes molten rock forms in deeper hot region of the earth's crust are pushed upwards which gets collected at some depth below the earth surface. The stored water has a lot of potential energy. Maximum temperature of 1000C only can be achieved in a solar cooker o Other solar devices- Solar water heater, Solar furnace 4 Geo thermal energy: i Energy harnessed from the heat of the sun is called Geo thermal energy.
Q10: Why do we prefer thermal power plants near coal or oil fields? All pdf files or link of pdf files are collected from various Resources Or sent by Students. Disadvantages: Uniform tidal action is not seen B Wave energy: i Kinetic energy of the waves of sea are used to rotate turbines. This is called solar constant. We are not responsible for any type of mistake in data. T Text book o Advantages: i Eco friendly ii Renewable o Disadvantages: i Wind speed not uniform always.
A typical solar cell using high quality silicon or silver develops a voltage of 0. They are being consumed at a large rate. Answer: Few suitable places for building tidal energy farms. Which of the following is not the conventional sources of energy a Fossil fuels b Biomass c Solar energy d Vegetable wastes 6. Solar energy is energy derived from a Helium b Sun c Coal d Wave 7.