CMSP Fundamental Knowledge of Science 2

Question 1

Which gas law states that at constant temperature, the pressure and volume of a gas are inversely proportional?

Accepted Answer

Boyle's Law

Answer

Boyle's Law states that P₁V₁ = P₂V₂ at constant temperature, meaning pressure and volume are inversely proportional.

Question 2

In a mine atmosphere, which property of methane makes it particularly dangerous compared to air?

Accepted Answer

Methane is lighter than air and accumulates near the roof

Answer

Methane (CH₄) has a specific gravity of ~0.55, making it lighter than air so it accumulates at roof level in mine entries.

Question 3

What is the primary chemical reaction that produces heat during spontaneous combustion of coal?

Accepted Answer

Oxidation of carbon compounds at low temperature

Answer

Spontaneous combustion results from slow oxidation of carbon in coal releasing heat faster than it dissipates, eventually reaching ignition temperature.

Question 4

Which unit correctly expresses the concentration of a gas contaminant in a mine atmosphere?

Accepted Answer

ppm (parts per million by volume)

Answer

Gas contaminant concentrations in mine air are expressed as ppm (parts per million by volume) or percent by volume for higher concentrations.

Question 5

A rock sample has a mass of 250 g and a volume of 100 cm³. What is its density?

Accepted Answer

2.5 g/cm³

Answer

Density = mass ÷ volume = 250 g ÷ 100 cm³ = 2.5 g/cm³.

(CMSP) Certified Mine Safety Professional Practice Test

(CMSP) Certified Mine Safety Professional Practice Test

CMSP Fundamental Knowledge of Science 2