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The ratio of the energy of a photon of 2000Å wavelength radiation to that of 4000 Å radiation is: (1) 1/4 (2) 4 (3) 1/2 (4) 2 Ans
why alkanes are called paraffin
plzzzzzzz sir giv me some information about law of constant proportion my email id is [email protected]
Which of the following is not isoelectronic : (1) Na + (2) Mg 2+ (3) O 2- (4) Cl - Ans:(d)Cl -
Two or more different types of monomers joined together to form giant molecule is called coopolymerisation. ex--- nylon6,6 --it is a combination of hexamethylenediamine and a
Write the structures of monomers used in the preparation of: a. Teflon b. PMMA
An atom with atomic number 20 is most likely to combine chemically with the atom whose atomic number is: (1) 11 (2) 14 (3) 16 (4) 10 An
How ion works?
examples of oxoacids and their definitions
explain main reason for boiler corrosion ?
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