Ncert – class 8- science – Chapter 3: Coal and Petroleum 1 Welcome to your Ncert - class 8- science - Chapter 3: Coal and Petroleum 1 1. Sewer gas is a complex mixture of: toxic and nontoxic gases nontoxic gases toxic gases inert gases None 2. Which component, obtained from the refining of petroleum, is used as a solvent in petrochemicals. Tar Naphthalene Petroleum coal Kerosene None 3. Choose the odd one out from the following and give reason for your choice. Charcoal Petrol Coal Firewood None 4. Dyes are used for coloring various materials like cloth and plastic. Starting material for dyes are obtained from: coal tar zinc baking ovens asphalt None 5. 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 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? Petroleum Sunlight Coal Mineral None 7. Which two transportation means move nearly two-thirds of all U.S. coal shipments? railroads and barges trucks and covered conveyor systems barges and coal slurry pipelines railroads and trucks 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. Which petroleum product is used for surfacing of roads? Coal tar Bitumen Lubricating oils Paraffin wax None 10. Choose the odd one out from the following and give reason for your choice. Natural gas Biomass Wind Sun None 11. Identify the chemical which is used to detect leakage of LPG ; n-butyl mercaptan Ethyl mercaptan Methyl mercaptan Propyl mercaptan None 12. The gas which occurs above the petroleum oil trapped under the rocks is called __________. coal gas natural gas petroleum gas bio gas None 13. Natural gas is found as: layer below the glacier layer above hot-beds layer above petroleum oil deep underground layer below petroleum oil deep underground None 14. Advantage of use of natural gas as fuel is: it is dangerous in case of irresponsible use relatively expensive storage it causes less air pollution natural gas has a long processing process None 15. Which of the following is used as fuel in an electric generator? Kerosene Diesel Petrol CNG None 16. Which of the following petroleum product is used for dry cleaning? Petrol Diesel Grease Kerosene None 17. 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. 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. None 18. Which of the following is obtained at lowest temperature by fractional distillation of petroleum? Heavy oil Diesel oil Kerosene Gasoline None 19. Which kind of materials (resources) can be extinct in future? None of these Non-renewable Both A and B Renewable None 20. 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 All of these LPG CNG 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 comment Enter your email address to comment Enter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
