Ncert – class 8- science – Chapter 3: Coal and Petroleum 1 Welcome to your Ncert - class 8- science - Chapter 3: Coal and Petroleum 1 1. Advantage of use of natural gas as fuel is: it is dangerous in case of irresponsible use it causes less air pollution relatively expensive storage natural gas has a long processing process None 2. Which of the following petroleum product is used for dry cleaning? Grease Diesel Petrol Kerosene None 3. Which of the following is obtained at lowest temperature by fractional distillation of petroleum? Heavy oil Gasoline Kerosene Diesel oil None 4. Which petroleum product is used for surfacing of roads? Bitumen Lubricating oils Coal tar Paraffin wax None 5. Which component, obtained from the refining of petroleum, is used as a solvent in petrochemicals. Tar Naphthalene Kerosene Petroleum coal None 6. Which of the following is used as fuel in an electric generator? Petrol Diesel CNG Kerosene None 7. The gas which occurs above the petroleum oil trapped under the rocks is called __________. petroleum gas bio gas natural gas coal gas None 8. Natural gas is found as: layer below the glacier layer above hot-beds layer below petroleum oil deep underground layer above petroleum oil deep underground None 9. Identify the chemical which is used to detect leakage of LPG ; Methyl mercaptan Propyl mercaptan n-butyl mercaptan Ethyl mercaptan None 10. The advantage of ________ is that it can be used directly as fuel in homes and factories due to the ability to supply through pipes. All of these LPG Petroleum CNG None 11. Which kind of materials (resources) can be extinct in future? Both A and B Non-renewable None of these Renewable None 12. Mark the right statement about coal: Coal is a fossil fuel. Coal is an exhaustible natural resource. All of these. Coal was formed from dead remains of trees and plants buried deep beneath the earth's surface. None 13. Choose the odd one out from the following and give reason for your choice. Firewood Coal Charcoal Petrol None 14. The inorganic origin of petroleum is indicated by the fact that Carbon and hydrocarbon can combine by absorption of solar energy to give hydrocarbons Its constituents can be separated by fractional distillation Oil fields are located with the help of seismograph Petroleum contains traces of chlorophyll None 15. Which two transportation means move nearly two-thirds of all U.S. coal shipments? trucks and covered conveyor systems railroads and barges railroads and trucks barges and coal slurry pipelines None 16. Sewer gas is a complex mixture of: nontoxic gases inert gases toxic and nontoxic gases toxic gases None 17. 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 Coal Petroleum Mineral None 18. Dyes are used for coloring various materials like cloth and plastic. Starting material for dyes are obtained from: baking ovens asphalt coal tar zinc 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. Use stairs to climb at least up to three floors of a building instead of taking a lift. This will save electricity. Solar cookers should be used to cook food whenever possible. The use of biogas as domestic fuel should be encouraged in rural areas. None 20. Choose the odd one out from the following and give reason for your choice. Biomass Natural gas Sun Wind 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.
