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Directive effect in mono substituted benzene derivatives: The substituent previously present on the benzene ring directs the incoming substituent to inhabit ortho (2 or 6), met
Nitration or Direct method The number of - NO 2 groups introduced in benzene nucleus relies upon the nature and concentration of the nitrating agent, temperature of nitration
manatic moment of KMno4
Fe+ AgNO3-->Fe(NO3)2 + Ag
just explain a little bite of its sequence that why uranium is used
Q. Estimation of synthetic food colours in foods? Food colours in various products need to be isolated, identified and then quantitatively measured for their limits. Estimatio
1. Express 95 mg/l of Ca 2+ as milligrams per liter of CaCO 3 . 2. Express 221 mg/l of Ca(HCO 3 ) 2 as equivalents per liter of CaCO 3 . 3. Determine the concentration o
Measure the combustion energies for the burning of 1 mol of propane and butane gas in air under these conditions. Calculate the efficiency of the combustion process as a functi
What are the main sources of electrical resistance in a metal? The factors which affect electrical resistance of a metal are impurity, temperature and alloying. Free mean path o
The interatomic distances in H 2 and Cl 2 molecules are 74 and 198 pm respectively. The bond length of HCl is : (1) 272 pm (2) 1
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