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please all jee aspirants of 2009 regarding the students who r on ithe border line between getting a rank or not in jee please everyone suggest a minimum cutoff for a rank and ascertain that it will be helpful to everyone ...
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how to determine the n factor of a compound please help ...
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what is caro's acid ...
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will an amino group attached to the benzene ring makes it sensitive to oxidation ...
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how to draw a chemical structure for example H2S2O5,CrO5 ...
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statement1: an astronaut in an orbiting station above the earth experiences weightlessness statement 2: an object moving around the earth under the influence of earth's gravitational force is in a state of 'free fall' ...
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each packet of certain items contain a coupon which is equally likely to bear the letters a,n,s,h,u if m packets r purchased then how to find the probability that the coupons cannot spell ANSHU, how? hint ...
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find the grtest +ve term of 2/5,12/23,3/4,4/3,......... and how ...
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find the sum to 10 terms of 2+5+31+86+.... and how ...
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if A=B=pi/2 what is tan (A+B)=-infinity(formulae) it should be zero why ...
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solve cosA + cos B + cos C+ cos (A+B+C) and post the hint ...
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diode and ressitor are connected to 2volt ,I=20mA,then it is reversed I=50mA,what is forward resistance of diode and resistor ,give me hint ...
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f(x)=x^n +4; then value of f(1)+f'(1)/1! +f"(1)/2! +..... nth derivatiive ...
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if Abcd is a rhombus and m is the pt of intersection of diagnols ,and bd=2ac, d=1+i ,m=2-i, find the pts representing A ...
