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