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26.	The Solar System was discoverd by
	A. Galleleo B. Finsen C. Copernicus D. None of these

27.	Landstrom invented
	A. Metallurgy B. Gas Engine C. Safety Match D. none of these

28.	Bicycle was invented by
	A. Alexanderson B. Macmillan C. Eijkman D. none of these

29.	Cholera Bascillus was invented by
	A. Hoffman B. Dunlop C. Joseph Lister D. Robert Koch

30.	D.D.T. was invented by
	A. Paul Muller B. John Dalton C. Rudolf D. None of these

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