Chemistry

Q381

Molecular mass of water (18 g) means__________?

Q382

The removal of 7th electron from an element of Group VI of the periodic table needs three times more energy than:

Q384

A ‘breath test’ used by traffic police to check drunken driving uses ____?

Q386

The Faint Young Sun Paradox suggests that early Earth should have been frozen. Which factor most likely resolved this paradox?

Q387

What is a mixture of Potassium Nitrate Powdered Charcoal and Sulphur called?

Q389

Second ionization energy:

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