Forensic Chemistry Quiz

Welcome to your Forensic Chemistry Quiz

1. 
P.E.T.N. is

2. 
Which of the following is the web-based tool used for training fire investigators?

3. 
Assertion and Reason Question:

Assertion (A): Liquid fuel can be categorized into flammable and combustible fuels.
Reason (R): The categorization is based on the fire point of 100°F.

4. 
The common forms of heat transfer are:

(a) Conduction
(b) Convention
(c) Radiation
(d) Infusion

Choose the correct option from the list:

5. 
Assertion and Reason Question:

Assertion (A): During the emergent smoldering phase of a fire, the products of combustion become increasingly pronounced.
Reason (R): This phase is characterized by a high level of oxygen-enriched air in the room.

6. 
Minimum heat flux required to cause pain to human skin with 2-second exposure and blister in 4 seconds with a second-degree burn injury

7. 
Which of the following are methods of initiating an improvised explosive device

(A) Time delay
(B) Energy delay
(C) Booby trap
(D) Bomber controlled
Choose the most appropriate answer from the option given below

8. 
In the context of a fire, what factor doubles the intensity of the fire?

9. 
Assertion and Reason Question:

Assertion (A): Radiation is radiated heat moving at the speed of rising much like sunlight or x-rays.
Reason (R): Radiant heat travels in a direct or straight line from the source until it strikes an object.

10. 
Cetane number is defined as:

11. 
The upper limit of the flammable range of gas referred to?

12. 
The gelling agents added to explosive mixtures to improve their resistance to moisture and increase viscosity are known as:

13. 
What is the definition of “Subrogation”?

14. 
Assertion and Reason Question

Assertion (A): Ignition quality of petrol and diesel can be governed by octane number.
Reason (R): Octane number measures the resistance to knock (or antiknock quality) for gasoline fuel.

15. 
The free-burning phase of fire is characterized by:

(a) Increasing combustion products
(b) High levels of oxygen-enriched air
(c) Doubling the fire’s intensity with each 10°C temperature increase
(d) Rapid evolution of heat from the original point of fire
(e) Depletion of oxygen-enriched air

Choose the correct option from the list:

16. 
Inks with polyethylene glycol base began replacing the oil-based ink in ball-point pens in the year:

17. 
The events that must occur for a chemical chain reaction to maintain flaming combustion are:

(a) The oxidation reaction must produce sufficient heat to maintain continued oxidation.
(b) The fuel mass must be broken down into similar compounds.
(c) The unburned vapors must combine with available oxygen.
(d) The fuel mass must be cooled to prevent combustion.

Choose the correct option from the list:

18. 
The minimum concentration of oxygen needed for flaming combustion to occur:

19. 
A chemical with an autoignition temperature below 130°F is better known as:

20. 
The primary method of heat production in a nuclear power plant is by:

21. 
Which phase of a fire can last anywhere from a fraction of a second to several hours or days?

22. 
What is the flashpoint of highly flammable petroleum products?

23. 
Which of the following explosives was first prepared for medicinal use in 1899?

24. 
Which of the following is the most common cause of arson?

25. 
Assertion and Reason Question

Assertion (A): The fire point of a fuel is the temperature at which it produces vapors that will ignite but not sustain combustion.
Reason (R): The fire point is generally several degrees higher than the flash point.