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26. Petrology deals with
A. study of rocks in the earths crust
B. study of formation of soils
C. study of the petroleum products
D. study of the petroleum related market economy
Explanation:
27. Distribution of electric power from one place to another is done at high A. C. voltage because
A. wastage of electricity is minimised.
B. stealing of electric wires is prevented.
C. electricity spreads in very short time.
D. it adds brightness.
Explanation:
28. Mica is used in an electric iron because it is a
A. good conductor of electricity
B. bad conductor of electricity
C. good conductor of heat
D. bad conductor of heat
Explanation:
29. Which of the following were first formed ?
A. Genes
B. Cells
C. Eobionts
D. Coacervates
Explanation:
30. Dr. Hargobind Khorana got Nobel Prize for he
A. deciphered the genes
B. discovered the structure of DNA
C. deciphere the genetic code
D. None of these
Explanation:
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