Chemistry
PVC stands for:
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Razmak is famous for_________?
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Purines are_________________?
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Which animal has no vocal chords ?
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Potassium meta-bisulphite is used as a food preservative for?
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Galvanised Iron sheets have a coating of____________?
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About 50% of the Earth’s crust, including the waters on the Earth and atmosphere, is?
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Mostly elements have fractional atomic masses because of______________________?
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The movement of any solvent across a semipermeable membrane is called__________?
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