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Basic dyes:
These types of dyes are the hydrochlorides or zinc chloride salts of colour bases comprising basic group sets. These dyes act along with anionic sites available on the fabric to attach themselves. These type of dyes colour fibers of nylons and polyesters. Aniline yellow, Magenta (Rosaniline) and Malachite green are the instances of basic dyes.
Polyglycolic acid (PGA) : It is acquired by the chain polymerisation of cyclic dimer of glycolic acid, OH-CH2-COOH.
You are given a sample block of an unknown metal. The block displaces 3.24 mL of water and has a mass of 62.5429 g. What is the density of the unknown metal? What is the metal?
Hofmann Method - Determination of Molecular Mass The method is applied to those substances that are not stable at their boiling points, but that may be volatilised with no deco
prove berzelius hypothesis
Critical Angle: The particular angle of incidence at which angle of refraction becomes 90 is known as critical Angle and it is denoted by θc
why 4f electrons do not take part in bonding?
Write the alkali metals in increasing order acc to ther atomic masses
lithium and beryllium markedly differ from other members of their respective groups.
Q. Magnetic Properties of f-block element? You have learnt in the preceding unit-that paramagnetism is related with the presence of unpaired electrons in a substance. The actin
#question.all questions under lanthanides and actinides.
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