Advertisements
Advertisements
प्रश्न
Fossil fuels are obtained from
विकल्प
remains of non-living materials
dead remains of birds only
dead remains of insects only
dead remains of living organisms
Advertisements
उत्तर
dead remains of living organisms
Explanation:
Fossil fuels are obtained from the remains of living organisms (plants and animals) buried under the earth millions of years ago.
Notes
Coal, petroleum and natural gas are fossil fuels.
APPEARS IN
संबंधित प्रश्न
Name the scientist who disproved the ‘vital force theory’ for the formation of organic compounds.
Name the element whose allotropic form is graphite.
In addition to some propane and ethane, LPG cylinders contain mainly two isomers of another alkane. Name the two isomers and write their condensed structural formulae.
Match the colunm
| column A | column B |
| 1. A product of incomplete burning | a. Hopcolite |
| 2. Nature of carben monoxide | b. Combustible gas |
| 3. A compound formed by the combination of haemoglobin and carbon monoxide | c. carboxy-haemoglobin |
| 4. A mixture of metallic oxides | d. Carbon monoxide |
| 5. Carbon monoxide | e. Highly poisonous |
Write three chemical properties of carbon.
Name of the following compounds :
Answer the following question.
Draw methane electron dot structure.
Answer the following question.
Why are methane compounds have poor conductors of electricity?
According to the Octet rule, carbon requires ______ electrons to attain the nearest noble gas.
Cigarette smoking is a source of ______.
