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Antiknock Compounds - Characteristics of Hydrocarbons
To decrease the knocking property or to enhance the octane number of a fuel certain chemicals are included in it. These are termed as antiknock compounds. One such type of substance, which is widely used, is tetraethyl lead (TEL). TEL is utilized in the form of following mixture,
TEL = 63%, Ethylene bromide = 26%, Ethylene chloride = 9% and a dye = 2%.
Though, there is a drawback that the lead is deposited in the engine. To eradicate the free lead, ethylene halides are added that combine with lead to form volatile lead halides.
Calculate ionisation potential of the electron in the first exited state of singly ionised Helium atom is given by ionisation of Hydrogen atom to be 13.6 eV. Ans: According to
Following Hund's rule which element contains six unpaired electron: (1) Fe (2) Co (3) Ni (4) Cr Ans: Cr
phsiscal properties &chemical propertise
Perfluorocarbons (PFCs): Perfluorocarbons (C n F 2n+2 ) are acquired by controlled fluorination of vapourized alkanes diluted along with nitrogen gas in the existence of a cata
PFEFFER METHOD
The atom of the element having atomic number 14 should have: (1) One unpaired electron (2) Two unpaired electrons (3) Three unpaired electrons (4) Four unpaired electr
Reaction with Dehydration of alcohol Reaction with H 2 SO 4 [Dehydration of alcohol]: The removal of water from a compound is termed as dehydration. The sequence of simple deh
WHEN DISTORTION OCCUR?&HOW IT WORKS?
Water pressure is the same in all directions Punch holes around the base of a tall tin can with a nail. Wrap the holes as above with a strip of tape. Fill the can with water an
explain how adsorption as a method of water treatment
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