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With a change in hybridisation of the carbon bearing the charge, the stability of a carbanion increase in the order : ( arrange sp, sp2, sp3) It should be sp3>sp2>sp because of the repulsion of pi electrons. But the ord ...
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*Image* Find the missing number. Tell me how did you get it. This one is interesting. ...
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In the following letter series, some of the letters are missing which are given in that order as one of the alternatives below it. Choose the correct alternative. c- ac- aa – aa – bc – bcc cabba ccbbb bbbbb cbacb ...
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If w ( ≠1) is cube root of unity satisfying 1/a+w + 1/b+w + 1/c+w = 2w2 and ,1/a+w2 + 1/b+w2 + 1/c+w2 = 2w then the value of 1/a+1 + 1/b+1 + 1/c+1 is ? ans 2 ...
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If a, b are roots of cos2x + acocx + b=0 as well as of sin2x + psinx + q, then a, b, p, q satisfy the relation 1)1 + b + a2 = p2 - q - 1 2)a2 + b2 = p2 + q2 3)b + q = a2 + p2 - 2 answer given is 3 ...
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The equation A2/(x-a) + B2/(x-b) + C2/(x-c) + ..... + H2/(x-h) = k has 1) No real root 2) At most one real root 3) No complex root 4) At most two complex roots ...
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The order and degree of the D.E. (y+c)2=cx is? I got the answer as 2,1 resp. but the answer given is opposite. What do you say? ...
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In the following figure, the space b/w the glass lenses is filled with water. We have to find the focal length of the system (radii of curvature, refractive indices given) *Image* Now to calculate the focal length of the wate ...
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What is the method for finding out the outer electronic configuration of actinoids and lanthanoids? A question came in AIEEE 2011 asking the same for Gd. How do we find it? ...
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Are there any BITSAT previous year question papers? I saw in an Arihant Publication book - BITSAT previous years solved question papers from 2005-2010. Are they fake? ...
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A light rigid rod is placed on a smooth horizontal surface. Initially the end A begins to move vertically upward with constant velocity v and centre of the rod upward with a velocity v/2 having downward acceleration a/2. The ...
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Due to wrong guidance from askiitians, I wrote wrong state code of eligiblity and I am realising it now. Does that affect anything during counselling/seat allotment? ...
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I had my worst examination today. First of all, I had to stand at the centre for 3 hours in the blazing sun. Secondly, my examination room had only one fan that too at the end of the room. I was drenched in sweat and was phys ...
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Ionisation energy of He+ is 19.6 × 10–18 J/atom. The energy of the first stationary state (n = 1) of Li2+ is? Using E = -2.18 x 10^-18 * Z2/n2 gives a wrong answer. What is the problem? ...
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The following Question is of Assertion and Reason type. Select the correct choice from the following options. Statement 1: The probability for the graph of 16x2 + 8(a+5)x -7 a - 5 in the interval is strictly above the x-axis ...
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On the basis of Le-Chatellier's principle, the condition that is unfavourable for the formation of SO3 is 2SO2(g) + O2(g)-----------> 2SO3(g) ; ΔH = − 42 kcal (1) low pressure (2) high pressure (3) high temperature (4) ...
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I got some serious problems with the answers provided to the following questions- 1. A: The current in RLC circuit driven by a sinusoidal voltage may lead,lag or be in phase with the applied voltage. R: Series resonance does ...
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If for a system of N particles of different masses m1, m2....mN with PVs r1, r2.....rN and corresponding velocities v1, v2...vN such that Σvi = 0, then 1) The total momentum must be 0. 2) The total angular momentum must be i ...
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The probability that two integers chosen at random and their product will have the same last digit is? ...
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A body A weighin 22N is positioned on the end of a slender horizontal plank fixed at one end (mass of the plank is negligible). A force (vertically downwards) on A causes a deflection of 12.5mm. The natural angular frequency ...
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Any body received their AIEEE hall tickets? ...
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y=Acos(wt-kx) y=Asin(wt+kx) Can they form stationary waves? I say yes. My book says no. Need a confirmation. ...
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Two blocks A and B are attached to a spring of force constant K and are placed on a horizontal surface. The coefficient of friction between block A and surface is zero while between block B and surface is μ. A spherical ball ...
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The total no. of optical isomers of the following compound are- *Image* Can somebody mark the chiral atoms plz? I got them as 5. If we go for the formula for no. of optical isomers, they will be way greater than 9...... P.S.: ...
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A three end toroid, containing an iron core, is connected into a circuit as shown in the figure. What will the current through switch K be right after closing the switch, if the initial current in the circuit was I0? (The ohm ...
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This is a step of a question. I already solved the question by another method but I am confused over which formula is applied directly here : The image (h,k) of (t2,2t) in x-y+1=0 is given by h-t2/1 = k-2t/-1 = -2(t2-2t+1)/(1 ...
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Quadrilaterals are formed by using the vertices of a convex polygon of 24 sides. The number of quadrilaterals having atleast one side of the quadrilateral in common with the side of the polygon is ? We can find out the total ...
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Is the unit of molar conductance and molar conductivity same? My book says that the unit of the former is Scm2mol-1 which is the unit of molar conductivity. Any ideas? ...
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Two doubts: Why does methylation of toluene in the presence of anh. AlCl3 give m-xyelene as opposed to p- or o- product? When 2 Bromo 1 Methyl cyclohexane is treated with CH3ONa in methanol solvent, does the reaction proceed ...
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If equation xn - nxn-1 + a2xn-2 + a3xn-3 + ......an-1x + (-1)n = 0 has n positive roots, then least value of n for which a2 + a3 is negative, is ? ...
