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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
Explain bond dipole for dimethylmagnesium The bond dipole for dimethylmagnesium should show that C is at the negative end of the C-Mg bond, because carbon is more electronegati
Q. Define Allotropic forms? All the elements of the group show allotropy. Oxygen exists in two allotropic forms. Dioxygen. 02, is a diatomic gas, paramagnetic in nature. Lewis
The phosphate of a metal has the formula MHPO 4. The formula of its chloride would be: (1) MCl (2) MCl 2 (
what size is an atom
#most wanted question..
Structure of proteins The structure of proteins is extremely complex. The basic structure of a protein considers to the number and sequence of the amino acids in its polypeptid
A 15 m 3 tank contains steam at 10 bar and 300 o C. The system is then cooled until the temperature reaches 150 o C . Some of the steam condenses. a) How much heat was transf
Cis-1-ethyl-3-methylcyclohexane can be isolated in optically active form.
LIGAND FIELD THEORY The five d orbitals with distinct values of the magnetic quantum number (m) have the similar energy in a free atom or ion. In any compound they interact
Uses of Benzoic Acid - carboxylic acids (i) Benzoic acid is used in medicine in the form of its salts particularly as urinary antiseptic. (ii) Benzoic acid is used as sodium
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