FORENSIC BALLISTICS
Ques 1) The rate of twist for
firearm formula was given by ?
A) Minie
B) Greener
C) George Greenhill
D) Gaspard Kollner
Ans
C) George Greenhill
Ques 2) Pressure start curve
inside the barrel determines?
A) trajectory of projectile
B) velocity of projectile
C) Temperature of projectile
D) Striking energy of projectile
E) Both B & D
Answer- E
Explanation: higher the pressure higher the
velocity and striking force
Ques 3) Which of the
following is not the measure of the recoil?
A) Muzzle Blast
B) Gases formed inside the Cartridge case
C) Weight of Gun And Bullet
D) Burning Of Target
Ans D) Burning Of Target
QUES 4) Which noise
component could be reduce by a suppressor?
A) Pressure Wave
B) Flight Noise
C) Hammer Noise
D) Supersonic Crack of Bullet
Ans A) Pressure Wave
QUES 5) The side way shift of the
projectile from the plane of departure is known as?
A) drift
B) ricochet
C) yaw
D) obturation
Ans A) drift
QUES 6) What does it called if
the ballistic coefficient of a bullet is more?
A) the bullet is more prone to fragmentation
B) the bullet has more terminal velocity
C) the ability to overcome air friction is less
D) the ability to overcome air friction is more
Ans D) the ability to overcome air friction is more
QUES 7) The back spatter refers to ?
A) Ejection Of Blood And Tissue Form The Exit Wound
B) Ejection Of Projectile From The Entrance Wound
C) Ejection Of Blood And Tissue From An Entrance Gunshot Wound
D) Ejection Of Projectile From The Exit Wound
Ans C) Ejection Of Blood And Tissues From An Entrance
Gunshot Wound
QUES 8) The range of firing by
which the collar mark found on the body?
A) 12 Inch Distance of the Wound
B) 3 Inch Distance of the Wound
C) 6 Inch Distance of the Wound
D) All The Above
Ans D) All Of The Above
Ques 9) For the study of wound
ballistic _____ gelatin gel block is used ?
A) 10%
B)20%
C) 5%
D) Both A and B
Ans D) BOTH A AND B
EXPLNATAION:- In modern wound ballistics studies, either 10 or 20% gelatine (by mass) blocks conditioned to 4 and 10 °C respectively are used
QUES 10) ASSERTION- Fouling smell
is found in the barrel after firing .
REASON- Because of the presence
of gas and unburnt powder in the barrel.
A) A is true but R is false
B) A is false but R is true
C) both A and R are true
D) both A and R are false
Ans C) both A and R are true
Ques 11) Match the following
QUES 12) The modified Griess
test is specific for the determination of ____ in gun powder residue
A) nitrate
B) antimony
C) barium
D) nitrite
Ans D) nitrite
QUES 13) Which element around
gunshot hole is tested by dithiooxamide test
A) Copper
B) Lead
C) Tin
D) Aluminium
Ans A) Copper
EXPLNATAION:-
The Dithiooxamide Test (also known as the Rubeanic Acid Test) is a chemically specific chromophoric test for the presence of cuprous (copper-bearing) material.
Copper-jacketed bullets represent a considerable percentage of ammunition evidence in criminal cases.
Sample is exposed to an ammonia solution
Then exposed to a solution of dithiooxamide dissolved in ethanol
A dark gray-green
color indicates the presence of copper-bearing material in bullet wipe.
A blue-pink color
indicates the presence of nickel (e.g., silver-tipped bullets).
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