1.
The tunnels, the artificial underground passages are constructed for:

2.
Drifters can be used to drill

3.
Which of the following methods of tunneling is used for long tunnels at great depths?

4.
Which of the following lining material is useful for shield driven tunnels in sub aqueous regions?

5.
Which of the following are percussion drills?
(i) Shot drill
(ii) Diamond drill
(iii) Wagon drill
(iv) Churn drill

6.
The most commonly adopted pattern of cut holes is:

7.
Circular section of tunnels is not suitable for

8.
The concentration of the dust particles of the size 0.5 to 5 microns adjacent to the working face should not be more than

9.
Which one of the following methods is generally used for the layout of the muck-car tracks?

10.
Which one of the following statements is not correct in respect of setting of an inclined tunnel?

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