81.
Which is not a method of groundwater exploration?

82.
What is the function of a core barrel in drilling?

83.
Which rock type is most suitable for constructing heavy dams?

84.
What is the typical product of chemical weathering of feldspar?

85.
What is the most suitable rock structure for tunnel stability?

86.
Which of the following is not a sedimentary rock?

87.
What do isopach maps represent in geology?

88.
What type of engineering structure is most affected by swelling clays?

89.
What is the main concern when using limestone in areas with acidic rain?

90.
What is the result of differential weathering?