The H-0- H angle in water molecule is about: n9. (a) 90 (C) 135° (b) 105" (d) 180

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Q: 43.Nautilus teach their peak in the Silurian and Devonian Select one : True False

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A: The angular diameter of sun is 32' that is approximately equal to 0.5°.

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Q: 6.Nautiloids became extinct at the end of Jurassic Select one True False

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