Ncert – class 8- science – Chapter 3: Coal and Petroleum 1 Welcome to your Ncert - class 8- science - Chapter 3: Coal and Petroleum 1 1. Choose the odd one out from the following and give reason for your choice. Firewood Petrol Charcoal Coal None 2. Which petroleum product is used for surfacing of roads? Coal tar Paraffin wax Lubricating oils Bitumen None 3. Dyes are used for coloring various materials like cloth and plastic. Starting material for dyes are obtained from: asphalt baking ovens zinc coal tar None 4. The gas which occurs above the petroleum oil trapped under the rocks is called __________. bio gas coal gas petroleum gas natural gas None 5. Identify the chemical which is used to detect leakage of LPG ; Propyl mercaptan n-butyl mercaptan Ethyl mercaptan Methyl mercaptan None 6. Which component, obtained from the refining of petroleum, is used as a solvent in petrochemicals. Kerosene Naphthalene Petroleum coal Tar None 7. Which of the following is obtained at lowest temperature by fractional distillation of petroleum? Diesel oil Kerosene Gasoline Heavy oil None 8. Which of the following is used as fuel in an electric generator? Petrol CNG Diesel Kerosene None 9. Mark the right statement about coal: Coal is a fossil fuel. All of these. Coal was formed from dead remains of trees and plants buried deep beneath the earth's surface. Coal is an exhaustible natural resource. None 10. Advantage of use of natural gas as fuel is: relatively expensive storage it is dangerous in case of irresponsible use it causes less air pollution natural gas has a long processing process None 11. Sewer gas is a complex mixture of: nontoxic gases toxic gases inert gases toxic and nontoxic gases None 12. Air is a natural resource and cannot be exhausted by human activities. It is known as an inexhaustible natural resource. Which of the following is another inexhaustible natural resource? Sunlight Mineral Petroleum Coal None 13. Which kind of materials (resources) can be extinct in future? Renewable Non-renewable None of these Both A and B None 14. The advantage of ________ is that it can be used directly as fuel in homes and factories due to the ability to supply through pipes. LPG All of these Petroleum CNG None 15. Which of the following can not be taken to conserve energy resources (like coal and petroleum)? Use stairs to climb at least up to three floors of a building instead of taking a lift. This will save electricity. The use of biogas as domestic fuel should be encouraged in rural areas. Pressure cookers should not be used for cooking food as the food is cooked in a cooker at very high pressure. Solar cookers should be used to cook food whenever possible. None 16. Which of the following petroleum product is used for dry cleaning? Grease Petrol Kerosene Diesel None 17. Choose the odd one out from the following and give reason for your choice. Sun Natural gas Biomass Wind None 18. Which two transportation means move nearly two-thirds of all U.S. coal shipments? railroads and trucks railroads and barges barges and coal slurry pipelines trucks and covered conveyor systems None 19. The inorganic origin of petroleum is indicated by the fact that Carbon and hydrocarbon can combine by absorption of solar energy to give hydrocarbons Oil fields are located with the help of seismograph Its constituents can be separated by fractional distillation Petroleum contains traces of chlorophyll None 20. Natural gas is found as: layer above petroleum oil deep underground layer below petroleum oil deep underground layer below the glacier layer above hot-beds None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
