Questions and Answers on Security Features of Rupee Notes
Question 1: What is the name of the ink used for printing the numerical value on the 500- and 1,000- rupee notes, which appears green when the note is flat and turns blue when observed at an angle?
Answer 1: The ink used for this feature is called Optically Variable Ink.
Question 2: What is the name of the printing technique that results in certain designs rising slightly above the rest of the currency note's surface?
Answer 2: This printing technique is known as Intaglio printing.
Question 3: What is the name of the feature that appears between the portrait of Mahatma Gandhi and a vertical band, containing the word 'RBI' in small letters for 5- and 10-rupee denominations, and also the value of the note for higher denominations?
Answer 3: This feature is called the Latent Image.
Question 4: What is the name of the narrow strip of ribbon weaved across the note’s breadth, engraved with the words “Bharat” and “RBI”, visible on the obverse and hidden on the reverse?
Answer 4: This feature is referred to as the Security Thread.
Question 5: What is the name of the rectangular image printed on the obverse side of certain denominations, showing the note’s value in numbers, visible only when held at an angle?
Answer 5: This feature is known as the Watermark
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