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An infinite GP has first term x and sum 5, then x belongs to a) x < -10 b) -10 < x < 0 c) 0 < x < 10 d) x > 10 ...
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*Image* How to do di type of sums? ...
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*Image* I have a lenghty solution,but if anyone can give a shortcut method for this? ...
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*Image* A solid iron sphere of radius=1m is just submerged in a water tank. A point source of light is kept vertically above its center at a distance 1m from the water surface. Find the area of the sphere's shadow. Refractive ...
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*Image* Find velocity of point C on string. ...
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At 298K, the thermal expansion coefficient and the Isothermal compressibility of liquid water are and respectively. Then, for water at 300 K and P = 1.00 bar is : a) 1.5 * 10^4 bar b) 3 * 10^-4 bar c) 6 * 10^-4 bar d) 9 * 10^ ...
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If the slope " Z (compressibility factor) vs " P " curve is constant ( Slope = π 492.6 atm-1) at a particular temperature (300 K) and very high pressure, then calculate the diameter if the molecules? ...
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Please verify whether A and D are r8 option? *Image* ...
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A wire of resistance ' R ' and length ' L ' is connected to a d.c. source of emf V through a switch ' S ' *Image* At t = 0, the switch ' S ' is closed and at the same time an external agent starts stretching the wire such tha ...
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Two children stand on a large, sloping hillside that can be considered as a plane. The ground is just sufficiently icy that a child would fall and slide downhill with a uniform speed as the result of receiving even the slight ...
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*Image* The question above the graph wala question.... ...
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Radium(Atomic no. 87 and mass no.221) is a radioactive substance having half life of 4 days.Find the probability that a nucleus undergoes decay after two half lives. A.1 B.1/2 C.3/4 D.1/4 ...
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*Image* Helium gas undergoes 2 isochoric and isobaric processes...efficiency of the cycle???? I am not understanding the solution.... *Image* ...
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Radium(Atomic no. 87 and mass no.221) is a radioactive substance having half life of 4 days.Find the probability that a nucleus undergoes decay after two half lives. A.1 B.1/2 C.3/4 D.1/4 ...
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If x,y and z are electronegativity,ionisation potential and electron affinity respectively.Then the electron affinity(z) in the terms of electronegativity(x) and ionisation potential(y) will be A.z=x+y/2 B.z=x-y/2 C.z=[(x)^2+ ...
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A2 and B2 are two diatomic molecules with bond energies of A-A and B-B bonds as x and y respectively.If the bond energy of the molecule A-B formed up from A2 and B2 is z.Then,the resonance energy of molecules A-B will be A.(â ...
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The product of n positive numbers is unity.Then their sum is a.a positive integer b.divisible by n c.equal to n + 1/n d.never less than n Let the numbers be a1,a2,a3.......an Applying A.M>=G.M we get, a1+a2+a3+............ ...
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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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A square loop of side length ' a ' , mass ' m ' and Resistance ' R ' enters a uniform magnetic field (B=B0 (-k)) with velocity ' v° ' at t = 0 sec Plot the variation of ' v ' with the distance from O ( Assume that ' v ' is e ...
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My first question is how bond angle is related to pKa values of a compound....Heres d question Q1. Selected bond angles for five hydrocarbons are shown below. Arrange these hydrocarbons according to their pKa values, from low ...
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*Image* How to proceed in this sum..... ...
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*Image* The answer is B......ok dats fine dat a cabocation will form so it prooceeds in forward direction....but wouldn't d C option should also be correct......Why we r not accounting for d resonance stabilisation of RCOO-?? ...
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S=1-1+1-1+1-1....................... infinity now thus, S=1- (1-1+1-1+1-1....................... infinity) thus S=1-S thus 2S=1 S=1/2 ...
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What is the siimmilarity between Friction And Baby cat(Kitten).????? ...
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*Image* A spool of radius 100m and mass 100kg has 100 grooves of radii 1m, 2m, ..., 100m. We use pulleys to suspend masses from the grooves as shown. The mass (i)kg is associated with the groove of radius (100-i)m. Find the a ...
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Why are beta keto acids unstable? Or the other way round....Why do beta keto acids undergo decarboxylation easily? Can't just find a good reason for this..... ...
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*Image* The diagram shows the graph of the derivative of a function y=f(x) for 0<=x<=5 with f(0)=0. ∫f(x)dx= [limits from 0 to 1] a.-21/20 b.21/20 c.-1 d.none of these Sir u said option b or d must be correct out of d ...
