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Not exactly Olympiad stuff, infact I don't know if it is. I just needed a section to post it. Others may try and solve it if they please -: Find the sum of terms of the GP : a+ar+ar2.......∞ where a is the value of x for wh ...
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Some things I found in Solomons which explain the mechanism of benzyne substitution.. *Image* *Image* So I was right initially about stability of carbanions. ...
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Traditionally been weak in this part of mechanics...pulley problems samajh aate they magar usse zyaada nahi. Q. A hinged construction consists of three rhombuses with the ratio of sides 3:2:1 . Vertex A3 moves in the horizont ...
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I'm starting a thread for the resolution of many popular organic doubts which have remained unsolved in this forum. Two of them I managed to solve, for which I provide the links here -: http://targetiit.com/iit-jee-forum/post ...
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*Image* And finally, a bonus question -: Q6. I have with me Br-(CH2)4-OH. I have to transform it into HO-(CH2)4-COOH. I can do this by the Grignard method(CO2) and by the Cyanide method(substitution and then hydrolysis). Whic ...
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The older one couldn't be edited, so I decided to make a new thread. Instructions for viewing : Right click and click on Zoom-In atleast thrice for a better view..and then use the mouse to navigate through the document. List ...
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They're out now! http://www.bitsadmission.com/fd/cutoffscores.htm Comp science fell to 343 last year...hmm. "Academic Flexibilities: Dual Degree Scheme: To meet the ambitions of the students who could not get admission to B.E ...
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We all know that to study better and to have a longer attention span, we need to keep fit and have a healthy body and mind. Do we really need to do gym and all that crap for this purpose? Not really. Normal exercise(the ways ...
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Q1. Every one of the 10 available lamps can be switched on to illuminate a certain hall. The total number of ways in which the hall can be illuminated is -: a) 55 b) 1023 c) 210 d) 10! My Working : Each lamp can or cannot ill ...
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PS : It's 22nd now so I'm allowed to post the question :P *Image* ...
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It's pretty well known that physics is my weak point...so I hope people wouldn't mind if I needed help in some basic problems. Besides, this isn't my homework either :P...been there done that LOL. Q1. Three links are hinged t ...
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In what way can you convert (CH3)3N to (CH3)2NH? Not a doubt. Try...and later I'll mention the direct method. ...
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The first two questions were the very first tough questions I did(from Alkyl Halides too)...way back in the beginning of class 12th FIITJEE. Let's see how you all fare! *Image* Lo yaar hint lo....think Favorskii reaction. ...
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Today's question has three parts(fairly easy) -: (a) The rate law for the substitution reaction of 2-bromobutane and HO- in 75% ethanol/25% water at 30°C is given as Rate = 3.2 x 10-5 [2-bromobutane][HO-] + 1.5 x 10-6[2-brom ...
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Just tell me this. When we have an inequality a < x < b where b > a, does it imply that x > a AND x < b or x > a OR x < b? Put in set theory, is it a union or an intersection? ...
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Thought of posting a little quickie here since I have the rights... Predict the products and explain the mechanism for the following reaction(s) -: *Image* Note : Oldies to whom I have explained this reaction are not allowed ...
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Welcome to the Great Organic Chemistry Challenge kiddos. Let's see what you got. Give it your best shot. You should know that I don't have the answers to any of these questions. Don't bank on me. Wake out of your slumber and ...
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"Last year my age was a square number next year it will be a cube number how old am I?" Now we all know you'll be the smartass, and say the closest square and cube separated by 2 are 25 and 27, so the answer is 26. Yeah, I al ...
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Q. A solution containing 2.675g of CoCl3. 6NH3 (molar mass = 267.5 g/mol) is passed through a cation exchanger. The chloride ions obtained in solution were treated with excess of AgNO3 to give 4.78g of AgCl(molar mass = 143.5 ...
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1. \lim_{n \to \infty} (1 + sin\frac{a}{n})^{n} 2. Function f(x) = (|x - 1| + |x - 2| + cosx), x\epsilon [0,4] is discontinuous at how many points? 3. \lim_{n \to \infty} (\frac{1}{1.3} + \frac{1}{3.5} + \frac{1}{5.7} +....+ ...
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I've noticed that recently not too many questions have come on this forum. You want AIEEE practice? You're gonna get it. Try this. I got it from Yahoo Answers(answered it myself there). A chemist allows some pure (2S, 3R)-3-b ...
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My VIT center is in Mayapuri, and I think you guys know what has happened there. If not, just google mayapuri and radiation together. Is it safe to go there?? Scientists are saying they cannot gauge the extent to which the da ...
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*Image* Agar aise questions AIEEE mein aayenge..I will be damn surprised! ...
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An insect crawls up a hemispherical surface very very slowly. The coefficient of friction between the insect and the surface is 1/3. If the line joining the centre of the hemisphere to the insect makes an angle of \alpha with ...
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You gotta hate em. Especially when you get problems like these. Q. The time period of a simple pendulum of length L is measured in an elevator descending with acc a = g/3. What is the value? ...
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The locus of the mid-point of the line segment joining the focus to a moving point on the parabola y2 = 4ax is another parabola with directrix : ? [Show your working...I've found the midpoint of the segment in terms of parame ...
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I suck at physics, but I had to confront these some day.. Q1. A balloon is ascending vertically with an acceleration of 0.2 m/s2. Two stones are dropped from it at an interval(I couldn't comprehend what this meant...does it m ...
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Not to be outdone by Manmay's and Anand's excellent threads, I am making a thread for organic reagents. Post as many as you can! I begin with the chapter alkyl halides. You may continue it or post the functions of other reage ...
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This thread is for those poor, lost souls who were stupid enough to take Computer Science for classes XI and XII, without knowing that it's not necessary as the syllabus revvs up to a whole new level in college. You do get th ...
