The correct statement among the following about Saccharin is -

1. It is also known as Ortho-sulphobenzimide

2. It is 550 times sweeter than sugar.

3. It is used as a sweetening agent.

4. All of the above.

Subtopic:  Food - Preservatives, Artificial Sweeteners & Antioxidants |
 91%
From NCERT
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Which of the following is an example of basic dye ?

(1) Alizarin

(2) Malachite green

(3) Indigo

(4) Orange I

Subtopic:  Soaps & Detergents, Dyes & Propellant |
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Which of the following is not a chromophore?

(1) —N=N—

(2) —NO

(3) —NO2

(4) —NH2

Subtopic:  Soaps & Detergents, Dyes & Propellant |
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Which of the following groups is not an auxochrome ?

(1)-N(CH3)2

(2)-OH

(3)-OCH3

(4) >C=N

Subtopic:  Soaps & Detergents, Dyes & Propellant |
 50%
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The compounds used to fix a dye to fabric is known as:

(1) mordant                     

(2) azeotrope

(3) bleaching agents         

(4) lake

Subtopic:  Classification of Medicines |
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Which one is disperse dye?

(1) Congo red

(2) Alizarin

(3) Celliton

(4) None of these

Subtopic:  Soaps & Detergents, Dyes & Propellant |
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Red ink is prepared from :

(1) Phenol

(2) Aniline

(3) Congo red

(4) Eosin

Subtopic:  Soaps & Detergents, Dyes & Propellant |
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Alizarin a mordant dye is not used in:

(1) cotton dyeing

(2) printing

(3) painting

(4) Chromium lakes for wood dyeing 

Subtopic:  Soaps & Detergents, Dyes & Propellant |
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A certain dye was prepared from a plant grown on a large scale in India. Name the dye:

1. Malachite green

2. Congo red

3. Indigo

4. Turmeric

Subtopic:  Soaps & Detergents, Dyes & Propellant |
 74%
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Which of the following structures represents a colourless substance?
 1.  C6H5N=N=C6H5
                   |
                  O

 

(2) C6H5-N=N-C6H5

(3) C6H5-NH-NH-C6H5

(4) None of the above

Subtopic:  Soaps & Detergents, Dyes & Propellant |
 58%
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