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Questions and Answers
Who is the chairman of the Paints, Varnishes and Related Products Sectional Committee, CHD 20?
Who is the chairman of the Paints, Varnishes and Related Products Sectional Committee, CHD 20?
Shri Ravi Marphatia
Which company is represented by Shri A.B.Menon?
Which company is represented by Shri A.B.Menon?
Bajaj Auto Limited
What is the location of Addisons Paint & Chemicals Ltd?
What is the location of Addisons Paint & Chemicals Ltd?
Chennai
Who is the alternate representative of Heavy Electrical Ltd, Timchriqxdli?
Who is the alternate representative of Heavy Electrical Ltd, Timchriqxdli?
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What is the name of the society represented by Shri R.R Vaidya?
What is the name of the society represented by Shri R.R Vaidya?
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Which organization is represented by Dr L.K Aggarwal?
Which organization is represented by Dr L.K Aggarwal?
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Who is the representative of Goodlass Nerolac Paints Ltd, Mumbai?
Who is the representative of Goodlass Nerolac Paints Ltd, Mumbai?
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What is the name of the institute represented by Dr K.V.S N.Raju?
What is the name of the institute represented by Dr K.V.S N.Raju?
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Who is the alternate representative of ICI (India) Ltd, Kolkata?
Who is the alternate representative of ICI (India) Ltd, Kolkata?
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Which organization is represented by Shri V.M.Write?
Which organization is represented by Shri V.M.Write?
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Study Notes
Colour Ranges and Identification
- Grey is assigned to the range of 600-699.
- Violet is designated for the range of 700-799.
- Yellow, Cream, and Buff as well as Brown and Pink fall within the ranges of 300-399 and 500-599, respectively.
- New colours will receive unique numbers that do not overlap with existing figures.
Munsell System and Standards
- Munsell references aid in identifying colours based on hue, value, and chroma.
- The Indian Standard Colour (ISC) number is crucial for identifying specific colours.
- Colourimetric values, including chromaticity coordinates and luminance factors, are essential for standard colours derived from spectrophotometric measurements.
Key Colour Concepts
- Achromatic Attribute: Visual sensations devoid of hue.
- Additive Mixture: Combining light stimuli to produce visual sensations.
- Chromatic Colour: Colours distinguished from achromatic colours by their hues.
- Complementary Colours: Pairs of colours that can produce a specified achromatic colour when mixed.
- Dichroism: Changes in hue due to varying observing conditions (e.g., light source, concentration of materials).
Colour Measurement Definitions
- Tristimulus Value: Represents the amounts of primary colours needed to match a colour stimulus.
- Luminance Value: Measure of the brightness emitted by a surface, relative to ideal diffusers.
- Chromatic Coordinates: Determined by reflectance measurements over a defined wavelength range.
Munsell Colour Reference Example
- A complete Munsell reference such as "7.5 R, 9/2" indicates:
- Hue: 7.5 R (red with a yellow-red inclination).
- Value: 9 (very light colour).
- Chroma: 2 (low colour strength).
Colour Range Values
- Neutral greys are identified with a prefix ‘N’ (e.g., N6, N8) indicating absence of hue or chroma.
- Munsell references allow for precise categorization of various colour types during design processes.
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Description
Test your knowledge of the Indian Standard Colour (ISC) codes and their corresponding Munsell references. This quiz covers the colour ranges and their assigned numbers, as well as the rules for adding new colours to the system. Learn about the ISC codes and colourimetric values in this quiz.
