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Borax bead test : The transparent glassy bead while heated along with inorganic salt and the colour produced gives some idea of cation present in it.
Table:
Colour of bead in oxidising flame
Colour of bead in reducing flame
Basic radical present
Greenish when hot, blue in cold.
Red and opaque
Cu
Dark green in hot and cold
Same
Cr
Deep - blue
Deep blue
Co
Yellow when hot
Green
Fe
Violet in hot and cold
Colourless
Mn
Brown in cold
Grey or black or opaque
Ni
synthesis of di and tri substituted benzenes(symmetrical tribromo benzene, 2-amino-5methylphenol, 3-nitro-4-bromobenzoic acid, 3,4-dibromonitrobenzene, 1,2,3-trimethyl benzene) sta
Saytzeff rule
According to heisenberg uncertainty principle: (1) E=mc 2 (2) Δ x × Δp ≥ h/ 4 Π (3)γ = h/ p (4) Δ x × Δ = h / 6 Π Norma
principles and general steps taken
An element L has 9 protons and valency 1. Another element M has valency 3 and 5. What is the difference in the number of electrons in L and M ?
advantage of his theory?
how to i find the answer to the question 8.05X10^22 molecules of carbon tetrahydride? and my answer has to be in moles
Harvesting techniques Many different harvesting techniques are used depending on the place of sale, the type of crop and the stage of maturity of the crop to be harveste
Q.give characterstics of matter?
Aldehydes and Ketones Carbonyl compounds are of two types, ketones and aldehydes. Both of them comprise a carbon-oxygen double bond frequently known as carbonyl group.
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