CMSP Fundamental Knowledge of Science 5

Question 1

In thermodynamics, which law states that energy cannot be created or destroyed, only converted from one form to another?

Accepted Answer

First Law of Thermodynamics

Answer

The First Law of Thermodynamics is the law of conservation of energy: the total energy of an isolated system is constant.

Question 2

Acid mine drainage (AMD) is primarily caused by which chemical reaction?

Accepted Answer

Oxidation of iron sulfide (pyrite, FeS₂) in the presence of water and oxygen

Answer

Pyrite oxidation: FeS₂ + H₂O + O₂ → Fe²⁺ + SO₄²⁻ + H⁺ produces sulfuric acid and acidic drainage.

Question 3

Which gas detector principle relies on measuring a change in electrical resistance of a heated metal oxide sensor?

Accepted Answer

Metal oxide semiconductor (MOS) sensor

Answer

Metal oxide semiconductor (MOS) sensors change electrical resistance when gas molecules adsorb onto the heated metal oxide surface.

Question 4

Which physical hazard is measured in foot-candles or lux in mine environments?

Accepted Answer

Illuminance (light level)

Answer

Illuminance is measured in lux (metric) or foot-candles (imperial); 1 foot-candle = 10.76 lux, and adequate lighting is critical for mine safety.

Question 5

When a miner descends into a deeper mine section, atmospheric pressure increases primarily because:

Accepted Answer

The weight of the air column above increases with depth below surface

Answer

Atmospheric pressure increases with depth because there is a greater column of air (and sometimes rock-heated air) above; barometric pressure rises approximately 0.03 inches Hg per 100 feet of descent.

(CMSP) Certified Mine Safety Professional Practice Test

(CMSP) Certified Mine Safety Professional Practice Test

CMSP Fundamental Knowledge of Science 5