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 kind of materials (resources) can be extinct in future? Non-renewable Both A and B None of these Renewable None 2. The inorganic origin of petroleum is indicated by the fact that Carbon and hydrocarbon can combine by absorption of solar energy to give hydrocarbons Petroleum contains traces of chlorophyll Oil fields are located with the help of seismograph Its constituents can be separated by fractional distillation None 3. Advantage of use of natural gas as fuel is: it is dangerous in case of irresponsible use natural gas has a long processing process relatively expensive storage it causes less air pollution None 4. 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 5. The gas which occurs above the petroleum oil trapped under the rocks is called __________. coal gas natural gas bio gas petroleum gas None 6. 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? Mineral Coal Petroleum Sunlight None 7. 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 LPG All of these None 8. Choose the odd one out from the following and give reason for your choice. Coal Firewood Petrol Charcoal None 9. Identify the chemical which is used to detect leakage of LPG ; Methyl mercaptan Propyl mercaptan n-butyl mercaptan Ethyl mercaptan None 10. Which of the following petroleum product is used for dry cleaning? Grease Kerosene Petrol Diesel None 11. Natural gas is found as: layer above petroleum oil deep underground layer below petroleum oil deep underground layer above hot-beds layer below the glacier None 12. Dyes are used for coloring various materials like cloth and plastic. Starting material for dyes are obtained from: asphalt baking ovens coal tar zinc None 13. Sewer gas is a complex mixture of: nontoxic gases toxic gases toxic and nontoxic gases inert gases None 14. Mark the right statement about coal: All of these. Coal is a fossil fuel. Coal is an exhaustible natural resource. Coal was formed from dead remains of trees and plants buried deep beneath the earth's surface. None 15. Which of the following is used as fuel in an electric generator? Diesel Kerosene Petrol CNG None 16. Which petroleum product is used for surfacing of roads? Coal tar Bitumen Lubricating oils Paraffin wax None 17. Which component, obtained from the refining of petroleum, is used as a solvent in petrochemicals. Kerosene Naphthalene Tar Petroleum coal None 18. Choose the odd one out from the following and give reason for your choice. Sun Biomass Wind Natural gas None 19. Which of the following is obtained at lowest temperature by fractional distillation of petroleum? Diesel oil Heavy oil Kerosene Gasoline None 20. 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 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.
