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Q. a. What is the origin of fossil fuels? b. List three fossil fuels. c. Are fossil fuels a renewable resource?
Answer:
a. Coal, natural gas and oil. b. Fossil fuels originated 150-300 million years ago from animal and plant matter. c. No. The time needed to form these fuels means they are not renewable.
Name the chief ore of silver. Explain with chemical equations the extraction of silver from this ore.
how can we calculate it?
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Explain propene In propene, the H 3 C-C bond dipole adds vectorially to the smaller H-C bond dipole; the resultant is smaller than the H 3 C-C bond dipole itself, as th
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The maximum number of unpaired electron can be present in d orbitals are: (1) 1 (2) 3 (3) 5 (4) 7 Ans: 5
Discuss effect of impurity, temperature and alloying on the electricity conductivity of metal. For an ideal crystal with no impurities and imperfections mean free path at 0 K i
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Q. Evaluate the gold number of A? The coagulation of 100 mL of colloidal sol. is completely prevented by adding 0.25g of a protective colloid 'A' to it before adding 1 mL of Na
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