Mine Ventilation - Study Mode

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[#91] The pressure which support the column of the mercury . . . . . . . . mm high at sea level when the temperature of mercury is . . . . . . . .°C.

(A) 750, 12

(B) 740, 0

(C) 760, 0

(D) 730, 0

Correct Answer

(C) 760, 0

[#92] This is the pressure exerted by fluid by virtue of its motion called . . . . . . . .

(A) total pressure

(B) static pressure

(C) ventilating pressure

(D) velocity pressure

Correct Answer

(D) velocity pressure

[#93] Portable interferometer type methane gas indicator to measure the methane content in methane air mixture scale offers a range of . . . . . . . . methane by vol.

(A) 0 - 5%

(B) 5 - 10%

(C) 0 - 10%

(D) 0 - 20%

Correct Answer

(C) 0 - 10%

[#94] Which gas is most toxic gas.

(A) CO 2

(B) CO

(C) NO 2

(D) SO 2

Correct Answer

(A) CO 2

[#95] Gas blower accompained by . . . . . . . . sound.

(A) weeping

(B) bus horn

(C) hissing sound

(D) vissel

Correct Answer

(C) hissing sound