#forensicmultiplechoicequestion

[forensicfield]

Question- What are the 3 types of photographs that need to be taken at a crime scene?

Answer- all crime scene photography consists of three basic types of photographs: 1.) Overall Photography 2.) Mid-range photography 3.) and, Close-up Photography.

📷 Long Range/Overall Photography: It Provides an overview of the scene establishing the location of the crime, to include addresses, street signs, business names, landmarks, outside and surrounding areas. Indoors, this includes photographs of a room from all four corners to show the layout of the room and furnishings. 📸 Mid-Range Photography: It Provides a view of spatial relationships of items and evidence within the scene.

📷 Close-up Photography: It Provides detailed photographs of individual items of evidence. If possible, should be taken at a 90 degree angle to the subject.

📐Scaled/Comparison Photography: Close-up photographs that include a ruler provide scaled, detailed documentation of individual items of evidence. They are necessary in order to produce an accurate one-to-one photographic reproduction to use for examinations or comparisons. 📏 The scale may be marked with the photographer’s initials and employee number, the LIMS number or offense number, and the date in a way that does not interfere with the markings on the scale.

To know more about forensic Photography Click on the link:

https://youtu.be/KcmyDqFsX1Y

[forensicfield]

Functional Compound and Food Source

[forensicfield]

Test your knowledge with 30 mcqs which have been selected from UGC/NET Examination 2018 Forensic Science (Paper II). and check your answer at the last of this video. Don’t forget to comment and tell us about your score out of 30. Best of Luck.

[forensicfield]

Astronomers detected signs of a smelly, toxic gas Phosphine, that microbes can make in the planet’s clouds

Question- What is Phosphine? Answer- Phosphine is the compound with the chemical formula PH3, classed as a pnictogen hydride. It is a colorless, flammable, very toxic gas. Pure phosphine is odorless, but technical grade samples have a highly unpleasant odor like garlic or decaying fish, due to the presence of substituted phosphine and diphosphane (P2H4). With traces of P2H4 present, PH3 is spontaneously flammable in air (pyrophoric), burning with a luminous flame.

IUPAC name: phosphane

Question- How is Phosphine made? Answer- Phosphine is a constituent of the Earth’s atmosphere at very low and highly variable concentrations. Phosphine is also made naturally by some species of anaerobic bacteria—organisms that live in the oxygen-starved environments of landfills, marshlands, and even animal guts. phosphine can only be made by life whether human or microbe. It had also been used as a chemical weapon during World War I. Phosphine is manufactured as an agricultural fumigant, is used in the semiconductor industry, and is a nasty byproduct of meth labs.

Question- Is phosphine gas Toxic? Answer- The Immediately Dangerous to Life or Health level is 50 ppm. Overexposure to phosphine gas causes nausea, vomiting, abdominal pain, diarrhea, thirst, chest tightness, dyspnea (breathing difficulty), muscle pain, chills, stupor or syncope, and pulmonary edema.