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*Image* Find the effective resistance across AB ...
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*Image* A uniform sphere of mass m and radius r rolls without sliding over a horizontal plane, rotating about a horizontal axle OA. in the process, the center of the sphere moves with velocity v along a circle of radius R. Fi ...
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*Image* A Long bus has to be passed from the top to the wider road on the side horizontally. The width of the road at the top= a The width of the road at the side= b Find the longest bus that can be made so that it ca ...
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pls tell me how to find the hybridisation of a complex compound or ion? ...
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PS:THIS FORMULA WILL ALWAYS GIVE YOU THE CORRECT ANSWER Just get through wid all this u'll find inorganic petty easy.... SHORTEST FORMULAE FOR HYBRIDIZATION: No of valence electrons + No. of atoms attached to central atom 2 C ...
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Be sure to read the problem clearly. A bag contains 6 balls of different unknown colors. Probability for A and B speaking truth are p and q respectively. A ball is drawn and both cofirm it to be RED. What is the probability t ...
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N identical balls lie equally spaced in a semicircle on a frictionless horizontal table, as shown. The total mass of these balls is M. Another ball of mass m approaches the semicircle from the left, with the proper initial co ...
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pLZ any organic tip here.......like how to increase, decrease Carbon atom , distinguishing between compounds , solving word problems, etc etc... ...
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There is a 7 * 11 chessboard placed in front of you. what you have to do is to find the number of rectangles of all shapes and sizes but of odd dimensions(i.e. both the length and breadth have to be odd) !!! ......check out!! ...
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Q 1) Prove that f(x)=\frac{x^7}{7}-\frac{x^6}{6}+\frac{x^5}{5}-\frac{x^4}{4}+\frac{x^3}{3}-\frac{x^2}{2}+x-1 has exactly one real root Q 2) In 1 hour a snail travels 60 meters. Prove that there was an Interval of 10 minutes w ...
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*Image* ...
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The equation for the reaction in the figure below is AB_{5}_{(g)} + heat\leftrightarrow AB_{3}_{(g)} +B_{2}_{(g)} double arrow means the reaction is in equilibrium *Image* At\; time\; 3\; min\; , what\; change\; was\; imposed ...
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hi everyone ! i was of the opinion that we can handle inorganic chemistry for coming year's JEE in a different way ! all of us have observed the questions in the recent 5 years JEE papers ! so, what we can do is collect bits ...
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ques. There are 5 boxes of 5 different colors. Also there are 5 balls of colors same as those of the boxes. In how many ways we can place 5 balls in 5 boxes such that a) all balls are placed in the boxes of colors not same as ...
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Q 2n girls are randomly divided into 2 subgroups contaitning n girls each.The probablity that two tallest girls are in diff groups... Ans given is n/2(2n-1) ..but i am getting (n-1)/2n ...
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if a>b>0 n→N prove that an -bn>=n(a-b)(ab)(n-1) /2 ...
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Prove that n= 5125-1/525-1 is a composite number. ...
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ex=x2+1 Solve this one rigorously. I dont want any short cuts or half attempts. Ideally this could fit into Graph of the day section.. But I thought that this is not a bad place either. ...
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Q1 Boiling CuCl2 with excess copper turnings and conc HCl gives ?? Q2 Cu2+ is more stable than Cu+ due to ?? Q3 CuSO4 + lime = ?? Q4 Yellow mercuric oxide is obtained by? Q5 The iron salt used in blue prints is ?? ...
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These are few sums on probability from Chinese Olympiad.. 1. If a stick is broken in two at random,what is the average length of the smaller piece ?? 2. A railroad numbers its locomotives in order, 1,2,....N. One day you see ...
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if f(x)= x2/2-2cosx g(x)= x2/6x-6sinx where 0<x<1 find whether f(x) and g(x) r increasing or decreasing function ...
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*Image* ...really good question,,,,took me some time to get into it ! ...
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This dbt is from what aieee said at http://targetiit.com/iit-jee-forum/posts/ino5-12714.html in post#12 Q Why ionic azides are stable while covalent azides are not ?? ...
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f(x) is a periodic fn with pd λ and f(x-\frac{\lambda }{2})=-f(x) ,then show thta g(x+\lambda)=g(x) where g(x)=\int_{0}^{x}{f(t)dt} ...
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xlog_e(\frac{x^y}{e^x})\frac {dy}{dx}=ylog_e(\frac {y^x}{e^y}) ...
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Q1 peptization is a) evaporation of dispersed med b)precipiation of dispered phase c)disintegration of dipersed phase d)combined effect of dispersion medium on dispersed phase Q2 Colloidal particles of water are coagulated ef ...
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sin4x+cos15x=1 tried this way.... => cos15x=1-sin4x => cos15x=(1+sin2x)(1-sin2x)=cos2x(1+sin2x)=cos2x(2-cos2x) => cos15x=2cos2x-cos4x koi chota soln hai kya kisi ke paas ?? ...
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*Image* Here , X is :- *Image* ...
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*Image* ...
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A wire of length l is bent into shape of an n sided regular polygon .If its mass be m , determine its polar M.I. about its centroid. Also find the M.I., in the limiting case as n-->∞ ...
