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Method for Detection of Elements - Phosphorus
Phosphorus is detected through fusing the organic compound along with sodium peroxide while phosphorus is converted into sodium phosphate. 2P + 5Na2O2→2Na3PO4 +2Na2O. The fused mass is extracted with H2O, boiled with conc. HNO3 and after that ammonium molybdate is included. Presence of yellow ppt. or colouration because of the formation of ammonium phosphomolybdate points out the presence of phosphorus.
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Visible range of hydrogen spectrum will contain the following series: (1) Pfund (2) Lyman (3) Balmer (4) Brackett Ans: Balmer
Molecular weight of orthophosphoric acid is M. Its equivalent weight is
The electronic configuration of an element with atomic number 7 i.e. nitrogen atom is; (1) 1s 2 , 2s 1 , 2p 3 x (2) 1s 2 , 2s 2 , 2p 2 x ,
Electro refining of Copper • Electrolyte - Aqueous copper sulphate solution (acidified) • Cathode - Pure copper metal (thin rod) • Anode - Impure copper metal (thick block) • Disso
Q. Factors affecting development of a new product? The product development and marketing is not just selling a product, but is a highly multi-disciplinary domain comprising of
Common or trivial names of some organic compounds Compound Common name Compound Common name CH 4 Methane
It can be because these group tend to decrease the electron density when attached to a benzene or other ring structure preferentially at ortho and pera position.
Uses of Glucose (a) Glucose is used in the conservation of fruits and making of jams and jellies. (b) Glucose is used in the preparation of confectionary and as a sweetening
which solution is formed when iodine solution ,copper sulphate and caustic soda are mixed?
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