Forensic Aspects of Explosives
Forensic Aspects of Explosives Quiz Crafted by -
Ritu Bharti
Assistant Professor
Department of Forensic Science,
Government Holkar Science College, Indore (M.P.)
Introduction to Explosives
An explosion occurs as the result of a chemical reaction which releases a vast amount of physical or chemical energy accompanied by light, heat and sound in a short space of time. The cause of an explosion could range from a simple accident in the home to a major terrorist incident. Either way, an intricate investigation must take place to establish the exact circumstances of the event. The construction of a bomb can be fairly simple, some requiring just a timer or remote control to create an initial spark, which ignites the bomb and triggers a blast. The recipes for making such a bomb are readily available online. The strength of a bomb can vary greatly, some yielding little power and others causing mass destruction, depending on the chemical reactants used and the construction of the device itself.
Let's look at the questions and their answer.
Que 1. In World War-I, which explosive was used in the large Caliber Shells?
a) RDX
b) Picric Acid
c) PETN
d) Tetrazene
Answer: b) Picric Acid
Que 2. The composition of Explosive Cyclotol Mixture is:
a) RDX (60-75%) + TNT (25-40%)
b) RDX (42%) + TNT (40%) + Al (18%)
c) RDX (95%) + Plasticizers (9%)
d) PETN (60-75%) + TNT (25%)
Answer: a) RDX (60-75%) + TNT (25-40%)
Que 3. The Explosive classified under Secondary High Explosives:
a) PETN
b) TNT
c) RDX
d) All of the above
Answer: d) All of the above
Que 4. The full form of ATF is:
a) American Task Force
b) Aviation Turbine Fuel
c) Bureau of Alcohol, Tobacco and Firearms
d) None of the above
Answer: c) Bureau of Alcohol, Tobacco and Firearms
Que 5. On 4th August 2020, A Huge Explosion of Beirut, Lebanon was as a result of:
a) RDX
b) Ammonium Nitrate
c) TNT
d) HMTD
Answer: b) Ammonium Nitrate
Que 6. HMX is used in Military applications as Booster charges for Artillery Shells and a component of Solid fuel Rocket Propellants is also known as:
a) Octogen
b) Hexogen
c) Pentolite
d) C4
Answer: a) Octogen
Que 7. The High Explosive invented by Sir Alfred Bernhard Nobel, Swedish Chemist who also founded the Nobel Prize is:
a) TNT
b) HMX
c) ANFO
d) Dynamite
Answer: d) Dynamite
Que 8. The composition of Black Powder classified under Low Explosives is:
a) Calcium Nitrate + Charcoal + Sulphur
b) Potassium Nitrate + Charcoal + Sulphur
c) Potassium Chloride + Charcoal + Sulphur
d) Calcium Chloride + Charcoal + Sulphur
Answer: b) Potassium Nitrate + Charcoal + Sulphur
Que 9. The residues obtained as a result of Explosion are analyzed by the Debris collected from blast scene, called:
a) Post-Blast Explosive Residues
b) Pre-Blast Explosive Residues
c) Both (a) & (b)
d) Explosive debris
Answer: a) Post-Blast Explosive Residues
Que 10. Before analyzing Explosive by Hyphenated techniques, it is analyzed by Screening tests:
a) Alcoholic KOH test
b) Griess Reagent Test
c) Diphenylamine Test
d) All of the above
Answer: d) All of the Above
Que 11. Velocity of Detonation for High Explosives is:
a) More than 1000m/s
b) Less than 1000m/s
c) Between 500-1000m/s
d) None of the Above
Answer: a) More than 1000m/s
Que 12. An Explosive usually a mixture of two liquids that do not normally mix with one another are called:
a) Water Gels
b) Binary Explosives
c) Ammonium Nitrate and Fuel Oil
d) Emulsion Explosives
Answer: d) Emulsion Explosives
Que 13. On 14th February 2019, Pulwama attack was resulted by Explosives:
a) Ammonium Nitrate
b) RDX
c) Both (a) & (b)
d) TNT
Answer: c) Both (a) & (b)
Que 14. An Analytical method used for Inorganic Analysis of Explosives is:
a) GC-MS (Gas Chromatography-Mass Spectroscopy)
b) IC (Ion Chromatography)
c) GC-ECD (Gas Chromatography- Electron Capture Detector)
d) HPLC (High Performance Liquid Chromatography)
Answer: b) IC (Ion Chromatography)
Que 15. An identification system that added to an Explosive that encodes information about the Explosive, such as manufacturer, type of Explosive or batch is called:
a) Taggants
b) Barcodes
c) Labels
d) None of the above
Answer: a) Taggants