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Why is cyclopropane forming from an alkene in Simmons Smith reaction? Isn't dat increasing d strain...i mean isn't d product more unstable dan d reactant???? Heres wat i got for d reaction mechanism... *Image* ...
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What is the mechanism of the reaction- Na+C- *Image* C-Na++2CO2→Na+O-OCC *Image* CCOO-Na+ ...
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A body traveling along x-axis starts from origin with initial velocity Vo and retardation KV3 where V is instantaneous velocity of the body (A)velocity of the body at any instant is 2Vo2Kt+1 (B)velocity of the body at any ins ...
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The x and y co-ordinate of the moving body are x=3t2and y=5t2 (A)velocity of the body is making angle tan-1 5/3 with +ve x-axis (B)the angle between velocity and acceleration is 0o (C)the path followed by the body is a straig ...
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A cube of side length a is kept on top of a hemisphere of radius r.For the body to be in stable equilibrium for small displacements what should be the maximum value of a?? ...
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cosider these two reactions, *Image* My question is why in the case of chlorination the major product formed is different than the one formed in the bromination..? ...
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consider a string attached to a pully(massless & frictionless).Take a part of string attached directly with the pully.Draw FBD.You will find that the string is pulled by two tensions of equal magnetude.As they are equal, so t ...
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Identical particles of charge q and mass m are fixed at the corners of a cube .One of the charges is released.What is its kinetic energy when it is far off from the rest of the charge?? ...
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Some operations which can be performed on a capacitor are defined below : A : Connect the capacitor to a battery of emf E B : Disconnect the battery C : Reconnect the battery with polarity reversed D : Insert a dielectric sla ...
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What does oxoketomethyl benzene when treated with NBS in presence of CCl4 yield?I am not sure about the nomenclature(sorry) but the structure shows a benzene ring with -OCOCH3 at the 1-position and a double bond between the 2 ...
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What is the product formed formed when Methylbenzene is treated with SO2Cl2 in presence of peroxides?Thanks. ...
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The acceleration of a particle is given by a(t)=(3.00m/s2)-(2.00m/s3)t. (a)Find the initial speed vosuch that the particle will have the same x-coordinate at t=5.00s as it had at t=0. (b)What will be the velocity at t=5.00s? ...
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A lift performs the first part of its ascent with uniform acceleration a and the remaining with uniform retardation 2a.If t is the time of ascent,find the depth of the shaft. (a) at2/4 (b) at2/3 (c) at2/2 (d) at2/8 (According ...
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The number of waves made by an electron moving in an orbit having maximum quantum number(m)+3 is (a)3 (b)4 (c)5 (d)6 ...
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on reaction of toulene with X2 in the presence of FeCl3 in dark , X is attached to ortho position and not at benzylic position .Why? ...
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*Image* +Mg-Hg+H2O→A A+H+→B then what is A and B? ...
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haloalkanes are slightly soluble in water as we dont get the energy to break the C-Cl bond as it has partial double bond character. But what if we heat the beaker where reaction is taking place. would it then be soluble? ...
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The acceleration of a particle is given by a(t)=(3.00m/s2)-(2.00m/s3)t. (a)Find the initial speed vosuch that the particle will have the same x-coordinate at t=5.00s as it had at t=0. (b)What will be the velocity at t=5.00s? ...
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The velocity of a particle moving in a straight line is decreasing at the rate of 3m/s per metre of displacement at an instant when the velocity is 10 m/s.Determine the acceleration of the particle at this instant. ...
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The acceleration of a particle is given by a(t)=(3.00m/s2)-(2.00m/s3)t. (a)Find the initial speed vosuch that the particle will have the same x-coordinate at t=5.00s as it had at t=0. (b)What will be the velocity at t=5.00s? ...
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Emission spectrum of Li2+ has 10 lines.Find wavelength of photon having minimum and maximum energy. ...
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How many times larger is a hydrogen atom than the radius of an H atom in its ground state if the H atom with an electron characterised by a quantum number of 106? (a)106 (b)212 (c)11236 (d)none of these ...
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The number of waves made by an electron moving in an orbit having maximum quantum number(m)+3 is (a)3 (b)4 (c)5 (d)6 ...
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If we doubled the concentration of x In the reaction X→Y, then rate of the reaction become 4 times of it's initial rate. what is the order of the reaction?? ...
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if any nucleophille is given how can we say that it is weak or strong nucleophille? ...
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A river is 20 m wide.River speed is 3 m/s.A boat starts with velocity 2√2 m/s at angle 45° from the from the river current(relative to river).How far from the point directly opposite to the starting point does the boat rea ...
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using cross formulas, which of the following compounds are chiral? a) 1 chloropentane... b) 2 chloropentane... c) 3 chloro 2 methyl pentane d) 2 bromo 1 chlorobutane ...
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Let S={1,2,3,..........n}.If x denotes the set of all subsets of S containing exactly two elements having 1 as least element,then what is the cardinality of X? ...
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The men square deviation of a set of n observations x1,x2,x3,.....xn about a point c is defined as \left(1/n \right)\sum_{i=1}^{n}{\left(x_{i}-c \right)^{2}} The mean square deviation about -2 and 2 are 18 and 10 respectively ...
