Which one of the following is a non-metallic mineral?

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what kind of soil is treated with gypsum to make it suitable for cropping______?

A. Alkaline B. Acidic C. Waterlogged D. Soil with excessive clay content...

By which process copper is refined ____________?

A. Roasting B. Oxidation C. Zone Refining D. Electrolysis...

Hydrogen peroxide (H2O2)______________?

A. helps line up cell proteins B. is poisonous to tissues C. is often needed as a catalyst D. aids in oxidation of glucose...

The property of a substance to absorb moisture from the air on exposure is called____________?

A. osmosis B. deliquescence C. efflorescence D. desiccation...

How many latitude lines are there?

A. 90 B. 180 C. 270 D. 360...