Mine Ventilation - Study Mode

Show All Answers

[#181] If the voltage range below . . . . . . . ., methanometer of D 6 will give faulty reading.

(A) 1.8

(B) 2.2

(C) 3.2

(D) 2.8

Correct Answer

(B) 2.2

[#182] Incubation period of singareni coal field is

(A) 6 months

(B) 9 - 18 months

(C) 8 - 12 months

(D) 12 - 18 months

Correct Answer

(B) 9 - 18 months

[#183] The given mass of gas is subjected to a change of pressure and temperature at one and the same time called

(A) Boyle's law

(B) Charle's law

(C) Combined A and B laws

(D) Graham's law

Correct Answer

(C) Combined A and B laws

[#184] For every 5% black damp corresponding to . . . . . . . .% of reduction in the O 2 percentage.

(A) 1

(B) 2

(C) 3

(D) 4

Correct Answer

(A) 1

[#185] CO in the air turns the light yellow of potassium palladium sulphate to . . . . . . . .

(A) green

(B) blue

(C) brown

(D) white

Correct Answer

(C) brown