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Classification of dyes according to their application
Direct dyes:
this type of dyes can be directly applied to the fiber, both vegetable and animal, by dipping in hot aqueous solution of the dye. This type of dyes is most significant for those fabrics that can form hydrogen bonds, that is for rayon, wool, silk, cotton and nylon. Congo and Martius yellow red work as direct dyes. Instances are: Martius yellow, congo red.
Which of the following has the maximum number of unpaired electrons: (1) Mg 2+ (2) Ti 3+ (3) V 3+ (
factors affecting TGA
construction of dry cell
CRYSTALLINE SOLIDS Solids may be loosely categorized into two groups. Amorphous solid has no long-range order in their molecular or atomic structure. By their nature Amorphous
(i) Assign appropriate reason for each of observations: (a) Anhydrous ALCI is used as a catalyst. (b) Phosphinic acid behaves as a monoprotic acid. (c) SF6 is not easily h
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Distilled water A kettle can be used to give boiling water, which is then condensed in a jam jar fitted with a big cork and immersed in a pan of cold water. Rubber tubing, adhe
why glass electrode is called indicator electrode
How can you identify the phenolic-OH gr. of an organic compound which also contain an electron withdrawing group?
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