Forensic Science and Document Examination

The video tutorial, led by Sneha, covers the examination of printed documents in forensic science. It discusses the importance of document authenticity, guidelines for forensic document examination, and various printing technologies such as high-speed mainframe, dot matrix, inkjet, and laser printers. The video also touches on thermal paper, fax machines, and the Multiplex PCR procedure. The tutorial concludes with a summary and references.

Why is document authenticity crucial in forensic science?

• To verify the legitimacy of documents in legal disputes

• To ensure documents are aesthetically pleasing

• To improve the speed of document processing

• To prevent unauthorized access to documents

Which of the following is a key question in forensic document examination?

• Is the document printed in color?

• Is the document an original or a copy?

• Does the document have a watermark?

• Is the document written in English?

What type of printer is commonly used for printing carbon or carbonless forms?

• Inkjet printer

• Dot matrix printer

• Laser printer

• Thermal printer

Which printer type is likely to be used for high-speed commercial applications?

• Dot matrix printer

• Inkjet printer

• Continuous drop printer

• Thermal printer

Which printing technology uses dry toner as ink?

• Inkjet printing

• Dot matrix printing

• Laser or LED printing

• Thermal printing

What is a characteristic of serographic printers?

• They create a glossy appearance

• They are used for carbonless forms

• They are the fastest printers available

• They use liquid ink

What is a common issue with fax machines?

• They cannot print in color

• They require both machines to be functional

• They are too slow for modern use

• They cannot send documents over the internet

What is the main advantage of multiplex PCR over simple PCR?

• It provides internal controls for amplified fragments

• It uses less DNA

• It is more cost-effective

• It is faster

What is a potential problem in simple PCR?

• False negatives due to reaction failure

• High cost of equipment

• Inability to detect DNA

• Excessive use of reagents

What is the purpose of adding a probe or dye in a quantitative assay?

• To quantify the DNA template

• To enhance the color of the solution

• To increase the reaction speed

• To stabilize the reaction