CLAT Exam > CLAT Questions > Which of the following is a natural dye?a)Cry...
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Which of the following is a natural dye?
- a)Crystal violet
- b)Aniline blue
- c)Alizarin
- d)Phenolphthalein
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Which of the following is a natural dye?a)Crystal violet b)Aniline blu...
Alizarin or 1,2-dihydroxyanthraquinone (also known as Mordant Red 11 and Turkey Red is an organic compound with formula C14H8O4 that has been used throughout history as a prominent red dye, principally for dyeing textile fabrics. Historically it was derived from the roots of plants of the madder genus. In 1869, it became the first natural pigment to be duplicated synthetically.
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Which of the following is a natural dye?a)Crystal violet b)Aniline blu...
Natural Dye - Alizarin
Natural dyes are dyes derived from plants, animals, or minerals. They have been used for thousands of years to color textiles, food, and other materials. Alizarin is one of the most well-known natural dyes.
Properties of Alizarin:
• Alizarin is a red dye that is derived from the roots of the madder plant.
• It has been used since ancient times to dye textiles, leather, and paper.
• Alizarin is a polyphenol, which means that it contains multiple hydroxyl groups (-OH) on its aromatic ring.
• It is insoluble in water but can be dissolved in alcohol or alkaline solutions.
• Alizarin has good light and wash fastness, which means that it does not fade or wash out easily.
Other Options:
• Crystal Violet and Aniline Blue are synthetic dyes that are commonly used in microbiology and histology.
• Phenolphthalein is a synthetic dye that is commonly used as an indicator in acid-base titrations.
Conclusion:
In conclusion, Alizarin is a natural dye that has been used for thousands of years to color textiles, leather, and paper. It is derived from the roots of the madder plant and has good light and wash fastness. Crystal Violet, Aniline Blue, and Phenolphthalein are synthetic dyes that are commonly used for other purposes.
Natural dyes are dyes derived from plants, animals, or minerals. They have been used for thousands of years to color textiles, food, and other materials. Alizarin is one of the most well-known natural dyes.
Properties of Alizarin:
• Alizarin is a red dye that is derived from the roots of the madder plant.
• It has been used since ancient times to dye textiles, leather, and paper.
• Alizarin is a polyphenol, which means that it contains multiple hydroxyl groups (-OH) on its aromatic ring.
• It is insoluble in water but can be dissolved in alcohol or alkaline solutions.
• Alizarin has good light and wash fastness, which means that it does not fade or wash out easily.
Other Options:
• Crystal Violet and Aniline Blue are synthetic dyes that are commonly used in microbiology and histology.
• Phenolphthalein is a synthetic dye that is commonly used as an indicator in acid-base titrations.
Conclusion:
In conclusion, Alizarin is a natural dye that has been used for thousands of years to color textiles, leather, and paper. It is derived from the roots of the madder plant and has good light and wash fastness. Crystal Violet, Aniline Blue, and Phenolphthalein are synthetic dyes that are commonly used for other purposes.
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Which of the following is a natural dye?a)Crystal violet b)Aniline blue c)Alizarin d)PhenolphthaleinCorrect answer is option 'C'. Can you explain this answer? for CLAT 2025 is part of CLAT preparation. The Question and answers have been prepared according to the CLAT exam syllabus. Information about Which of the following is a natural dye?a)Crystal violet b)Aniline blue c)Alizarin d)PhenolphthaleinCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for CLAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is a natural dye?a)Crystal violet b)Aniline blue c)Alizarin d)PhenolphthaleinCorrect answer is option 'C'. Can you explain this answer?.
Which of the following is a natural dye?a)Crystal violet b)Aniline blue c)Alizarin d)PhenolphthaleinCorrect answer is option 'C'. Can you explain this answer? for CLAT 2025 is part of CLAT preparation. The Question and answers have been prepared according to the CLAT exam syllabus. Information about Which of the following is a natural dye?a)Crystal violet b)Aniline blue c)Alizarin d)PhenolphthaleinCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for CLAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is a natural dye?a)Crystal violet b)Aniline blue c)Alizarin d)PhenolphthaleinCorrect answer is option 'C'. Can you explain this answer?.
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