Highway Engineering
When the bituminous surfacing is done on already existing black top road or over existing cement concrete road, the type of treatment given is

Prime coat
Tack coat
Seal coat
Spray of emulsion

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Highway Engineering
Select the correct statement.

More the value of group index, less thickness of pavement will be required
All of these
More the value of CBR, greater thickness of pavement will be required
Minimum and maximum values of group index can be 0 and 20 respectively

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