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Fossil fuels are rich in______: Carbon and hydrogen
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Fossil fuels are important sources of energy in______: Transport, Homes, Industries
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When animal and plant materials not in absence of air there is production of gas called______: Bio gas
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Earth releases its heat by eruptions of______: Volcano, Hot springs, Geysers
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Plant materials, vegetation and waste from living things are regarded as______: Biomass
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Bio gas is renewable source of______: Energy
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Burning of fossil fuels are leading towards______: Pollution, Global warming
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Energy resources which will not run out in long-term are called______: Renewable
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To harness solar energy products which are helpful are______: Solar furnace, Solar heater, Solar cells
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A dangerous activity which resulted in many deaths due to gas explosion, or flooding is______: Coal mining
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Need and demand of fossil fuels can be reduced by______: Conserving energy
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Toxic air pollutants like sulphur dioxide and nitrogen oxides are produced by burning______: Coal, Oil
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Fossil fuels are regarded as energy sources which are______: Non-renewable
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Which of the following is a non-renewable energy resource? Coal
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What is the leading source of energy used in Pakistan today? Oil resources
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Oil, coal and natural gas supply approximately ______ percent of the energy used in Pakistan: 65
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Harmful radiation emitted by the sun is______: Ultra-violet
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Which of the following causes the least pollution when burnt? Natural gas
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The main constituent of LPG is______: Propane
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The main constituent of CNG is______: Methane
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Which of these is not a renewable source of energy? Natural gas
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The radiation emitted by a hot furnace are______: Infrared
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A solar cell is made up of______: Silicon
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Which of the following is not combustible? Oxygen
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In a solar penal, the metal used is______: Silver
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A solar cell converts______: Solar energy into electrical energy
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The source of energy of the sun is______: Nuclear fusion
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Which of the following statements is not true about kinetic energy? The kinetic energy of something depends on its height
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Which of the following statements is not true about gravitational potential energy? The gravitational potential energy of something depends on its speed
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There are three (or four) different methods of heat transfer. Which of the following is not one of them? Nuclear radiation
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What does the law of conservation of energy state? Energy cannot be made or developed, but it can be changed from one form to another
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Non-renewable fuels are very polluting and are running out quickly. Which of the following is not an advantage of using coal, oil, gas or nuclear energy? They all give a very reliable power output
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Sun, wind, running water, tides, biomass, and geothermal resources are accounted as______: Renewable
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SI unit for energy is______: Joule