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 petroleum product is used for surfacing of roads? Bitumen Paraffin wax Coal tar Lubricating oils None 2. The advantage of ________ is that it can be used directly as fuel in homes and factories due to the ability to supply through pipes. Petroleum CNG All of these LPG None 3. Identify the chemical which is used to detect leakage of LPG ; Ethyl mercaptan Propyl mercaptan n-butyl mercaptan Methyl mercaptan None 4. Mark the right statement about coal: Coal is an exhaustible natural resource. 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. None 5. The gas which occurs above the petroleum oil trapped under the rocks is called __________. natural gas coal gas bio gas petroleum gas None 6. 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. Solar cookers should be used to cook food whenever possible. 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. None 7. Advantage of use of natural gas as fuel is: it causes less air pollution it is dangerous in case of irresponsible use relatively expensive storage natural gas has a long processing process None 8. Which kind of materials (resources) can be extinct in future? Renewable None of these Non-renewable Both A and B None 9. The inorganic origin of petroleum is indicated by the fact that Oil fields are located with the help of seismograph 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 None 10. Choose the odd one out from the following and give reason for your choice. Natural gas Biomass Wind Sun None 11. Which two transportation means move nearly two-thirds of all U.S. coal shipments? barges and coal slurry pipelines trucks and covered conveyor systems railroads and trucks railroads and barges None 12. Which of the following is used as fuel in an electric generator? Petrol Kerosene CNG Diesel None 13. Natural gas is found as: layer above petroleum oil deep underground layer above hot-beds layer below petroleum oil deep underground layer below the glacier None 14. Which of the following petroleum product is used for dry cleaning? Diesel Petrol Kerosene Grease None 15. Which of the following is obtained at lowest temperature by fractional distillation of petroleum? Gasoline Heavy oil Kerosene Diesel oil None 16. Dyes are used for coloring various materials like cloth and plastic. Starting material for dyes are obtained from: asphalt coal tar baking ovens zinc 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. Sewer gas is a complex mixture of: nontoxic gases inert gases toxic gases toxic and nontoxic gases None 19. Choose the odd one out from the following and give reason for your choice. Coal Petrol Charcoal Firewood None 20. Which component, obtained from the refining of petroleum, is used as a solvent in petrochemicals. Kerosene Petroleum coal Naphthalene Tar 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.
