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use of socl2 is a better approach 2 convert an alcohol 2 alkly chloride with compared 2 use of pcl5 --- please justify !!! ...
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though chlorine is a very usefull and strong bleaching agent , yet it can not decolourise an ordinery pencil mark !!! why does chlorine show this peculiar property ?? ...
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If the number of 5 digit numbers in which each of the digits 2 and 5 occur only once is 64k . Then find the value of k . options --- 150 , 148 , 248 , 128 . ...
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The speed of a 1.5*10^4 g navy fighter plane landing on a carrier is reduced 216 km/hr to rest by the plane's brakes and the cable arrester system . The arresting force provided by the plane's brakes is 600 kN . The arresting ...
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1>what is Hinsberg test ?? 2>C6H5CH2I + NaN3 (at 390°C) → products .. What is the various possible products if the reaction is assumed to involve nitrene as an intermediate ? ...
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1> If 84^n divides (496)! , then what is the maximum value of n ?? 2> What is the number of 5 digit multiples of 3 that end with digit 6 ?? ...
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A sequence is obtained by deleting all the perfect squares from set of natural numbers . Find the remainder when 2003rd term of new sequence is divided by 2048 ?? ...
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can any one explain what is lepton number ??? and give any usefull formulae relating to it ?? guys please help .. and guess what it was on ISAT sample paper 2010 !! ...
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Just like mass and charge, each particle has a quantity called “Lepton Numberâ€. The table below gives charge and Lepton number of some particles. Like charge, lepton number should be conserved in any physical process. ((p ...
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Is the function F(x) = x^3+C ; where C belongs to positive real numbers including 0 ; always strictly increasing at (0,0) ?? please explain !! ...
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∫e^x(1+sinx)/(1+cosx) ...
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For all complex numbers z1 and z2 satisfying mod(z1)=12 and mod(z2-3-4i)=5 , find the minimum value of mod(z1-z2) . ...
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A uniform bar AB of length 2 m. and mass 5 kg hanging freely frem a froctionless pivot at A is struck by a 25 gm bullet moving with a velocity of 500 m/s and making an angle of 30° with the horizontal . The bullet pierces th ...
