railway RRB JE (CBT I + CBT II) Mock Test 2024 Highway Engineering Highway Development and Planning

Which of the following is the full form of PENT or PETN, an explosive used in tunneling and military applications?

1
Pentane Energy Nitrate
2
Polyethylene Nitrogen Trinitrate
3
Pyrotechnic Explosive Nitrogen Trigger
4
Pentaerythritol Tetranitrate
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