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Here you will get to know on which way we are going and how we will reach the destination 1. Pick up the explosive used for tunneling in soft rocks from the following :  A. Special gelatine B. Blasting gelatine C. Ammonia dynamite D. Semi-gelatine 2. Which one of the following tunnelling method is used for lying underground sewers ? A. Needle beam method B. German method  C. Army method D. English method 3. To attain the required shape of tunnel we use : A. Cutholes B. Chisels C. Erasers D. Trimmers 4. For initial surveys of tunnel, the following activities are involved :  a. Marking portal points with concrete pillars on the ground.  b. Marking tunnel obligatory points on the topograpical maps. c. Driving lines between the fixed obligatory points. d. Preliminary setting of the tunnel on the topograpical survey of Indian maps. The correct sequence of the activities are :  A. b,a,d,c B. a,b,c,d C. d,b,c,a D. c,b,d,a 5. If 'D' is a diameter of the tunnel in meters, then the thick