38449
A dye imparts red colour on fabric. What colour of light was absorbed by the dye
1 Blue
2 Red
3 Green
4 Orange
Explanation:
(c) Green is the complimentary colour of red.
CHEMISTRY IN EVERYDAY LIFE
38450
Which of the following is an azo dye
1 Orange\(-I\)
2 Phenolphthalein
3 Malachite green
4 Methylene blue
Explanation:
(a) Orange \(-I\) is an acid azodye.
CHEMISTRY IN EVERYDAY LIFE
38451
An example of anthraquinone dye is
1 Alizarin
2 Basic acid
3 Methylene blue
4 Phenolphthalein
Explanation:
(a) Alizarin is an example of anthraquinon dye.
CHEMISTRY IN EVERYDAY LIFE
38452
Which of the following is a basic dyes
1 Congo Red
2 Aniline Yellow
3 Alizarin
4 Indigo
Explanation:
(b)Aniline yellow is a basic dyes.
CHEMISTRY IN EVERYDAY LIFE
38453
The dyes which are applied to the fabric in the colourless reduced state and then oxidised to coloured state are called
1 Vat dyes
2 Disperse dyes
3 Triphenyl methane dye
4 Azo dyes
Explanation:
(a) Vat dyes are insoluble compounds which reduction give soluble (leucoform) product. The product may be either coloured or colourless a have affinity for specific fabrics e.g. Indigo.
38449
A dye imparts red colour on fabric. What colour of light was absorbed by the dye
1 Blue
2 Red
3 Green
4 Orange
Explanation:
(c) Green is the complimentary colour of red.
CHEMISTRY IN EVERYDAY LIFE
38450
Which of the following is an azo dye
1 Orange\(-I\)
2 Phenolphthalein
3 Malachite green
4 Methylene blue
Explanation:
(a) Orange \(-I\) is an acid azodye.
CHEMISTRY IN EVERYDAY LIFE
38451
An example of anthraquinone dye is
1 Alizarin
2 Basic acid
3 Methylene blue
4 Phenolphthalein
Explanation:
(a) Alizarin is an example of anthraquinon dye.
CHEMISTRY IN EVERYDAY LIFE
38452
Which of the following is a basic dyes
1 Congo Red
2 Aniline Yellow
3 Alizarin
4 Indigo
Explanation:
(b)Aniline yellow is a basic dyes.
CHEMISTRY IN EVERYDAY LIFE
38453
The dyes which are applied to the fabric in the colourless reduced state and then oxidised to coloured state are called
1 Vat dyes
2 Disperse dyes
3 Triphenyl methane dye
4 Azo dyes
Explanation:
(a) Vat dyes are insoluble compounds which reduction give soluble (leucoform) product. The product may be either coloured or colourless a have affinity for specific fabrics e.g. Indigo.
38449
A dye imparts red colour on fabric. What colour of light was absorbed by the dye
1 Blue
2 Red
3 Green
4 Orange
Explanation:
(c) Green is the complimentary colour of red.
CHEMISTRY IN EVERYDAY LIFE
38450
Which of the following is an azo dye
1 Orange\(-I\)
2 Phenolphthalein
3 Malachite green
4 Methylene blue
Explanation:
(a) Orange \(-I\) is an acid azodye.
CHEMISTRY IN EVERYDAY LIFE
38451
An example of anthraquinone dye is
1 Alizarin
2 Basic acid
3 Methylene blue
4 Phenolphthalein
Explanation:
(a) Alizarin is an example of anthraquinon dye.
CHEMISTRY IN EVERYDAY LIFE
38452
Which of the following is a basic dyes
1 Congo Red
2 Aniline Yellow
3 Alizarin
4 Indigo
Explanation:
(b)Aniline yellow is a basic dyes.
CHEMISTRY IN EVERYDAY LIFE
38453
The dyes which are applied to the fabric in the colourless reduced state and then oxidised to coloured state are called
1 Vat dyes
2 Disperse dyes
3 Triphenyl methane dye
4 Azo dyes
Explanation:
(a) Vat dyes are insoluble compounds which reduction give soluble (leucoform) product. The product may be either coloured or colourless a have affinity for specific fabrics e.g. Indigo.
38449
A dye imparts red colour on fabric. What colour of light was absorbed by the dye
1 Blue
2 Red
3 Green
4 Orange
Explanation:
(c) Green is the complimentary colour of red.
CHEMISTRY IN EVERYDAY LIFE
38450
Which of the following is an azo dye
1 Orange\(-I\)
2 Phenolphthalein
3 Malachite green
4 Methylene blue
Explanation:
(a) Orange \(-I\) is an acid azodye.
CHEMISTRY IN EVERYDAY LIFE
38451
An example of anthraquinone dye is
1 Alizarin
2 Basic acid
3 Methylene blue
4 Phenolphthalein
Explanation:
(a) Alizarin is an example of anthraquinon dye.
CHEMISTRY IN EVERYDAY LIFE
38452
Which of the following is a basic dyes
1 Congo Red
2 Aniline Yellow
3 Alizarin
4 Indigo
Explanation:
(b)Aniline yellow is a basic dyes.
CHEMISTRY IN EVERYDAY LIFE
38453
The dyes which are applied to the fabric in the colourless reduced state and then oxidised to coloured state are called
1 Vat dyes
2 Disperse dyes
3 Triphenyl methane dye
4 Azo dyes
Explanation:
(a) Vat dyes are insoluble compounds which reduction give soluble (leucoform) product. The product may be either coloured or colourless a have affinity for specific fabrics e.g. Indigo.
38449
A dye imparts red colour on fabric. What colour of light was absorbed by the dye
1 Blue
2 Red
3 Green
4 Orange
Explanation:
(c) Green is the complimentary colour of red.
CHEMISTRY IN EVERYDAY LIFE
38450
Which of the following is an azo dye
1 Orange\(-I\)
2 Phenolphthalein
3 Malachite green
4 Methylene blue
Explanation:
(a) Orange \(-I\) is an acid azodye.
CHEMISTRY IN EVERYDAY LIFE
38451
An example of anthraquinone dye is
1 Alizarin
2 Basic acid
3 Methylene blue
4 Phenolphthalein
Explanation:
(a) Alizarin is an example of anthraquinon dye.
CHEMISTRY IN EVERYDAY LIFE
38452
Which of the following is a basic dyes
1 Congo Red
2 Aniline Yellow
3 Alizarin
4 Indigo
Explanation:
(b)Aniline yellow is a basic dyes.
CHEMISTRY IN EVERYDAY LIFE
38453
The dyes which are applied to the fabric in the colourless reduced state and then oxidised to coloured state are called
1 Vat dyes
2 Disperse dyes
3 Triphenyl methane dye
4 Azo dyes
Explanation:
(a) Vat dyes are insoluble compounds which reduction give soluble (leucoform) product. The product may be either coloured or colourless a have affinity for specific fabrics e.g. Indigo.
