Drilling and Blasting MCQs Questions & Answers | Mining Engineering Page-1 section-3

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10

1.
Fill the following equation gives 2KO₂ + 2H₂O →

A. $$2KOH + \frac{3}{2}{O_2}$$

B. $${K_2}C{O_3} + \frac{3}{2}{O_2}$$

C. $$KC{O_3} + {H_2}O$$

D. $$KHC{O_3}$$

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2.
Which of the following detonators are used with P5 explosives (off-the-solid-blasting)?

A. instantaneous type detonators

B. short delay aluminum incendive detonators

C. carrick short delay non-incendive detonators

D. aluminum based long delay detonators

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3.
By varying pitch of blades, the quantity of air circulated can be varied, but the pressure produced is . . . . . . . .

A. Same

B. Changes

C. High

D. Low

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4.
The diameter of M.S pipe with plug for recording temperature of the atmosphere below stopping.

A. 18 mm

B. 25 mm

C. 38 mm

D. 50 mm

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5.
In this type of fan consists of two impellers rotating in opposite direction.

A. Contra rotating

B. Axial flow

C. Centrifugal

D. Booster

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6.
The minimum thickness of isolation stopping in I and II degree gassy mine.

A. 1 m

B. 1.5 m

C. 2 m

D. 1.8 m

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7.
An air screw fan is convinient as to use an under ground . . . . . . . . fan.

A. Booster fan

B. Producer

C. Centrifugal

D. All of these

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8.
Measuring accuracy of electronic amemometer.

A. ±1%

B. ±2%

C. ±3%

D. ±0.1%

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9.
The pressure on phreautic surface is

A. Less than atmospheric pressure

B. Greater than atmospheric pressure

C. Independent of atmospheric pressure

D. Equal to atmospheric pressure

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10.
Caustite is a mixture of . . . . . . . . used in gas mask.

A. Causitic soda + H₂S

B. Pumica + Caustic soda

C. H₂S + CO₃

D. None

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Drilling and Blasting MCQs Questions & Answers | Mining Engineering

1. Fill the following equation gives 2KO2 + 2H2O →

Answer & Solution

2. Which of the following detonators are used with P5 explosives (off-the-solid-blasting)?

Answer & Solution

3. By varying pitch of blades, the quantity of air circulated can be varied, but the pressure produced is . . . . . . . .

Answer & Solution

4. The diameter of M.S pipe with plug for recording temperature of the atmosphere below stopping.

Answer & Solution

5. In this type of fan consists of two impellers rotating in opposite direction.

Answer & Solution

6. The minimum thickness of isolation stopping in I and II degree gassy mine.

Answer & Solution

7. An air screw fan is convinient as to use an under ground . . . . . . . . fan.

Answer & Solution

8. Measuring accuracy of electronic amemometer.

Answer & Solution

9. The pressure on phreautic surface is

Answer & Solution

10. Caustite is a mixture of . . . . . . . . used in gas mask.

Answer & Solution

Read More Section(Drilling and Blasting)

1.
Fill the following equation gives 2KO₂ + 2H₂O →

2.
Which of the following detonators are used with P5 explosives (off-the-solid-blasting)?

3.
By varying pitch of blades, the quantity of air circulated can be varied, but the pressure produced is . . . . . . . .

4.
The diameter of M.S pipe with plug for recording temperature of the atmosphere below stopping.

5.
In this type of fan consists of two impellers rotating in opposite direction.

6.
The minimum thickness of isolation stopping in I and II degree gassy mine.

7.
An air screw fan is convinient as to use an under ground . . . . . . . . fan.

8.
Measuring accuracy of electronic amemometer.

9.
The pressure on phreautic surface is

10.
Caustite is a mixture of . . . . . . . . used in gas mask.