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Benzene- Hydrocarbon
Benzene is the first or initial member of arenes. It was first revealed by Faraday in year 1825 from whale oil. Mitscherllich (1833) acquired it by distillating benzoic acid with lime. Hofmann (1845) got it from coal tar, which is as well a commercial source of benzene.
General Tests on Benzoic Acid (a) It dissolves in hot water but separates out in the form of white shining flakes on cooling. (b) Benzoic Acid evolves CO 2 with sodium bica
1. A sample of water contains: suspended matter = 100 mg; Ca(NO3)2 = 16.4 mg/L; MgSO4 = 24 mg/L; MgCl2 = 19 mg/L; NaOH = 40 mg/L and KOH = 56 mg/L. Calculate temporary, permanent a
calculate the molarity of sodiun in 0.66ml water
The electronic configuration of an element is 1s 2 , 2s 2 2p 6 3s 2 3p 6 3d 5 4s 1 . This represents its: (1) Excited state (2) Ground state (3)Cationic for
Number of orbitats in h sub-shell is: (1) 11 (2) 15 (3) 17 (4) 19 Ans: 11
seawater contains 0.75g of Fe+3 per kilogram of water. What is the concentration of Fe_3 in ppm?
HOW MANY HALF LIVES ARE REQUIRED FOR THE CONCENTRATION OF REACTANT TO DECREASE BY 1.56 PERCENT OF ITS ORIGINAL VALUE
Q. Moisture removal in foods by different drying techniques? To carry out the moisture removal in foods by different drying techniques. • make yourselves familiarized with
Draw the structures of white phosphorus and red phosphorus. Which one of these two types of phosphorus is more reactive and why?
what the uses of nitro compound in pharmacy
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