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Q1)For detection of hydrogen and carbon in compounds why do we take Cuo three times the weight of the organic compound? Q2)What decides how many parts of compound are to be reacted with how many parts of reagent. Q3)the given ...

In the given isomers of pentane why only fig 1, fig 3, and fig 4 will be considered i.e., pentane, 2-methylbutane and 2,2-dimethylpropane why not fig 2 and fig 5 please tell me. I am much confused....?????????????????????? *I ...

I really need help with questions like these. 24cm3 of a mixture of methane and ethane were exploded with 90cm3 of oxygen. After cooling to room temperature, the volume of gas was noted. It was found to decrease by 32cm3 when ...

Can any one explain me how to find the coeff. of x5 in the expression (1+x)(1+x+x2)(1+x+x2+x3+x4)2 I did not start Binomial Expansions yet. So please explain in easy language. ...

I heard from some people that 12th droppers are not eligible to get jobs in some MNCs like WIPRO INFOSYS etc. Is this true? What is the reason behind it? ...

1)What is the difference between phenanthrene and anthracene?Their structures are quite similar 2)why are double bonds are stronger and shorter than single bonds? 3)Is the bond angle in methyl anion 109.5.?If so why is it dif ...

rank the iits according to ECE course. ...

SA(1st part) and SB/SX:: http://www.kvpy.org.in/main/resources/answerkey2010-SA-SB-SX.pdf and SA (part 2):: http://www.kvpy.org.in/main/resources/answerkey2010-SA-PartB.pdf the question papers are here: SA(part1):: http://www ...

how was ur KVPY exam?? post ur expected marks here!! ...

frndz say the reason why the taoutomer for the following is the 2nd one?? *Image* but generally it shld be taken from alpha carbon but this differrent but y?? ...

Hello all, I am extremely interested in taking FREE online test series for iit-jee.Its just that I want to test myself.I know that even targetiit.com offers it too, but I would like to know the list of other websites which of ...

The free end of a flexible rope of Length L and mass λ per unit length is released from the rest in the position as shown in the figure (A). Determine the velocity V of the moving portion of the rope in terms of y. *Image* ...

Prove that the fractional loss in the kinetic energy of an incident neutron in a head on collision with an Atomic nucleus , initially at rest is 4A/(A+1)2. A being the Atomic No. ...

I would be grateful to anyone who could explain me in detail. 1) No. of ways in which 6 diff. toys can be given to 2 children so that all toys donot go to the same child. 62 2) No of ways in which 6 diff. toys may be distribu ...

in case of positive adsorption there are unbalanced forces on the surface which causes the phenomenon but why does negative adsorption take place? ...

*Image* above is a rod having a perpendicular extension MN which has a container permanently fixed to it .. the container contains water full to its top.. the rod was rotated in such a way that water comes out of the hole of ...

1) The half-time of first order decomposition of nitramide is 2.1hr at 15°C NH2NO2(aq) → N2O(g) + H2O(l) If 6.2g of NH2NO2 is allowed to decompose, calculate a) time taken for NH2NO2 to decompose 99%. b) volume of dry N2O ...

hey frnds.... facing a bit of confusion in the concept dat..... when the length of the rod of resisitivity ρ is doubled, what will be the change in the resistance (initially length = l and area of cross-section = A) on doubl ...

Identical thin rods of length 2a carry equal charges, Q, uniformly distributed along their lengths. The rods lie along the x axis with their centers separated by a distance of (in Fig. ). Show that the magnitude of the force ...

when we say the confition for a number k to be greater than both the roots of ax2+bx+c (whether a is less or greater than 0), one of the conditions is af(k)>0. Why do we multiply a with f(k) and why not simply check whethe ...

reading this quesn mite make u feel this is a 9th class quesn(it atleast made me feel so:P) but still cudnt do it:P now i realise why my maths is weak........kaash 9th mein dhang se padh leta:P In a triangle OAB , E is the mi ...

a cell has efficiency 60% when connected only to a resistance R. wt will be new efficiency of cell if resistance is increased to six times?? ...

if the asymptote of the hyperbola (x+y+1)2 - (x-y-3)2 = 5 cuts each other at A and the coordinate axis at B and C then radius of circle passing through the points A, B ,C is ...

A cylinder of mass M is suspended through two strings wrapped around it . Another cylinder B of mass m is connected by a masless string that is wrapped around the cylinders in opposite directions . During the fall the strings ...

if a girl stands on a rotating platform and then suddenly if she getz her hands inwards towardz her then angularmomentum increases angular velocity decreases moment of inertia decreases moment of inertia increses wch of the f ...

Given that the radius of Mg2+ , O2- , S2- are 0.65A , 1.41A, 1.84A respectively. what will be the co-ordinaion no. of Mg2+ in MgO and MgS respectively. y isn't the ans same????? ...

If y=e^x sinx Find d10y/dx10. ...

Show that the locus of a pt. which moves in such a way that the square of its distance from the base of an isosceles triangle is equal to the rectangle under its distance frm the other sides , is a circle. ...

I belong to OBC (creamy layer) but I don't have any certificate for it. What option should I select in IIT-JEE online application process? ...

give an example of compounds which r superimposable but not mirror images of each other. ...