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. Sun Wind Natural gas Biomass None 2. Advantage of use of natural gas as fuel is: natural gas has a long processing process it is dangerous in case of irresponsible use relatively expensive storage it causes less air pollution None 3. The gas which occurs above the petroleum oil trapped under the rocks is called __________. bio gas natural gas coal gas petroleum gas None 4. Which component, obtained from the refining of petroleum, is used as a solvent in petrochemicals. Petroleum coal Tar Kerosene Naphthalene None 5. 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 6. 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 7. 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 Mineral Petroleum Sunlight None 8. The inorganic origin of petroleum is indicated by the fact that Petroleum contains traces of chlorophyll Oil fields are located with the help of seismograph Its constituents can be separated by fractional distillation Carbon and hydrocarbon can combine by absorption of solar energy to give hydrocarbons None 9. Mark the right statement about coal: Coal was formed from dead remains of trees and plants buried deep beneath the earth's surface. Coal is a fossil fuel. All of these. Coal is an exhaustible natural resource. None 10. Sewer gas is a complex mixture of: toxic and nontoxic gases nontoxic gases inert gases toxic gases None 11. Which of the following is used as fuel in an electric generator? CNG Petrol Diesel Kerosene None 12. Choose the odd one out from the following and give reason for your choice. Charcoal Petrol Firewood Coal None 13. Identify the chemical which is used to detect leakage of LPG ; Methyl mercaptan Propyl mercaptan Ethyl mercaptan n-butyl mercaptan 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. CNG LPG All of these Petroleum None 15. Which of the following is obtained at lowest temperature by fractional distillation of petroleum? Gasoline Heavy oil Diesel oil Kerosene None 16. Dyes are used for coloring various materials like cloth and plastic. Starting material for dyes are obtained from: baking ovens asphalt zinc coal tar None 17. Which petroleum product is used for surfacing of roads? Coal tar Lubricating oils Bitumen Paraffin wax None 18. Which kind of materials (resources) can be extinct in future? Both A and B Renewable None of these Non-renewable None 19. 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. The use of biogas as domestic fuel should be encouraged in rural areas. Solar cookers should be used to cook food whenever possible. Use stairs to climb at least up to three floors of a building instead of taking a lift. This will save electricity. None 20. Which of the following petroleum product is used for dry cleaning? Petrol Grease Kerosene Diesel 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.
