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Guys, when will the IIT counselling begin? It was supposed to start from yesterday (27th may), but there is nothing on the site yet... ...
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One mole of an ideal gas in initial state A undergoes a cyclic process ABCA as shown. Its pressure at A is Po. then (a) Internal energies at A and B are same (b) Work done by the gas in the process AB is PoVo ln4 (c) pressure ...
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Q1. Two concentric shells of radius R and 2R, out of which the inner shell is having a charge Q and the outer shell is uncharged. If they are connected with a conducting wire, then (a) Q amount of charge will flow from inner ...
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Q1. Which shows more donor properties: NF3 or PF3? EXPLAIN. Ans PF3..can't find the reason anywhere.. Q2. Give reasons why cation vacancies in some crystals make them good catalysts. Q3. Explain why: (a) TiCl2 is a high melti ...
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Ye kaunse chapter ka question hai?? <<Assertion-Reason type>> STATEMENT-1: ~(p \leftrightarrow ~q) is equivalent to p \leftrightarrow q. STATEMENT-2: ~(p \leftrightarrow ~q) is a tautology. ...
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We usually say that s subshell is closer to the nucleus than p, d, f etc of the same shell, isn't it? But according to the plots given in the following graph, it shows that 3d is closest to the nucleus, then 3p and then 3s. S ...
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Q1 *Image* i dont have the answer with me...so please post the solution... ...
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The minute hand of a church clock is twice as long as the hour hand. At what time after midnight does the end of the minute hand move away from the end of the hour hand at the fastest rate? ...
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A wheel of a truck moving with velocity 5m/s throws up mud particles from its rim. The wheel's diameter is 3m. Find the maximum height from ground to which a particle can reach. (wheel does not slide on road) ...
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what is the hybridization of Ti in (NH4)2[TiCl6]? i'm getting a very strange answer... d5s [3] plz try it out... ...
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Can anyone tell me how we write q-value in case of β- and β+ decay? I have some confusion in what is written in hcverma. ...
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errr....just got confused...which one of these is correct?? sin(a) + sin(a+d) + sin(a+2d) + sin(a+3d) + ...... + sin(a+nd) = \frac{sin\left(\frac{2a+nd}{2}\right)sin\left(\frac{nd}{2} \right)}{sin\left(\frac{d}{2} \right)} OR ...
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What is the difference between polydenticity and chelation? ...
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Prove that the sum of the infinite series 1+1-1+1-1+... is either 1 or 0. <edited:> the sum can be 1/2 too.. in fact, the sum is formally defined to be 1/2. So...go ahead and prove it! ...
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Can someone help me out with functional relations please? I'm always stuck with such type of questions. How do we think about it and proceed in these? As an example, help me solve this question- Determine a function f satisfy ...
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A small particle travelling with a velocity v collides elastically with a smooth spherical body of equal mass and of radius r initially kept at rest. The centre of this spherical body is located at a distance l (l < r) awa ...
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not at all related to iit jee..but still..does ne1 know bout these? *Image* ...
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made up this question...so please dont go into too much chemistry!! Q. There is an n-membered benzene-like structure. If m no. of methyl groups are attached to the ring, find number of isomers possible. ...
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Three identical balls are connected by light inextensible strings with each other as shown and rest over a smooth horizontal table. At the moment t=0, ball B is imparted a velocity. Calculate the velocity of A when it collide ...
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4 identical balls of radius R and mass m are lying in a gravity free space. The balls are in contact and their centres are forming vertices of a square of side 2R in horizontal plane. One identical ball travelling vertically ...
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made up this ques.... if a uniform chain is hanging from two points, wat will be its shape? (parabola/hyperbola/part of ellipse etc...) I'm almost dead sure that it will be a parabola...but how will we prove it??? part 2... w ...
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find gravitational field at O... *Image* ...
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Two solutions of equal volume, but one having pH 4 and other having pH 10, are mixed. What is the pH of the resulting solution? ...
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*Image* why maximum no. of H-bonds in HF is 2, whereas that in water is 4?? (refer to the highlighted portion..) and why are the bond lengths different for different H-bonds from the same molecule? (in the pic, bond lengths a ...
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There are two air bubbles (fully submerged) inside a container filled with water. Considering only gravitational force, explain whether they will get attracted or repelled. (Surface tension, etc not to be considered...only gr ...
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Find angular speed of particle B with respect to A. *Image* ...
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According to one of the most popular theories of the origin of universe, the Big Bang theory, the universe began as a result of a colossal explosion of matter, antimatter and energy. After the big bang, everything was chaotic ...
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A drop of water sticks to a glass surface due to cohesive forces between glass and water molecules. But why does an air bubble stick to a glass surface under water? ...
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What is levelling effect of water??? ...
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What is levelling effect of water??? ...
