Phosphorus is an essential component of one of the following biological molecules:

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In a typical H-R diagram, stars are graphed by these two characteristics:

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Covalent network crystals have_____________?

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The metal, which is a constituent of vitamin B12 is____________?

A. Iron B. Magnesium C. Zinc D. Cobalt...

A healthy man consumes maximum calories while playing?

A: Cricket B: Golf C: Billiards D: Football ...

Quality rating of deisel is called?

Octane Catane Protane Butane...