Recently Active Questions

what is the possible potential problems that could have reduced yield in chemical reaction? can you explain few reasons? ...

Please proof some of these If, a/b = c/d then prove that, >> a/b = c/d = (a + c)/(b + d) >> a/b = c/d = √(ac/bd) >> a/b = c/d = (ab + cd)/(b2 + d2) without, assuming that a/b = c/d = k and then putting the ...

If x = y = z b - c c - a a - b then, prove that, ax + by + cz = 0 ...

now no questions involving numbers like 2011 ,2010... Let a@b be defined as a@b=(a+b+ab+9)/(a+b); then ((((((......((5000@4999)@4998)@4997@......(3@2)@1) EQUALS?????? ...

the electric field at any point is given by E= ax2i+by2j+cz2k/ax2+by2+cz2 find the flux paasibg thru the solid sphere of radius R with centre at origin. ...

1 . *Image* A plane monochromatic light wave of intesity I 0 falls normally on the surfaces of the opaque screens in the figure here . Find the intensity of light at the behind the blackened points of the screens . ...

Following compound A spontaneously changes into http://img846.imageshack.us/i/51646289.png/ ONE OR MORE THAN ONE OPTIONS MAY BE CORRECT. ...

Suppose a circular string with linear mass density U and radius R rotates with an angular speed W.A pulse moves on it with some velocity Establish v = WR ( where v means the velocity of any point on the string) ...

1 . *Image* A particle of mass " m " rests on a straight groove along which it is constrained to move . The mass is attached to a vertical rubber band suspended froma rigid support . Initially , the band is of its natural len ...

shudn't d ans be 2 ? *Image* please help ...

If a, b, c and d are in G.P then prove that, (a - b)3 = a (b - c)3 d ...

If ax2 + bx + c = 0 be a quadratic equation where a,b and c are odd then prove that, it can't have a rational number solution. ...

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 ...

http://img823.imageshack.us/i/32895350.png/ The correct order is: (A) x>y (B) x<y (C) x=y (D) can't predict i think its x<y coz i have read that electron withdrawing substituents in the diene such as CHO , CN , NO2 e ...

*Image* find force exerted by 1 on 2 and 2 on 1. ...

How many of triangles whose vertices are chosen from the vertices of a cube are equilateral? ...

Limit x->0+ x^(cosx ) ...

Consider f(x)=(x2-2mx-4(m2+1))(x2-4x-2m(m2+1))=0,m is not equal to 2. If f(x) =0has three different real roots,then m=???? ...

Σnk=1 k/k4+ 1/4 =? ...

The section consists of a few questions. Just work them out... I too wanna check myself.. 1. If, (a + 2b)2 + (b - 2c)2 + (c - 2a)2 = 0 find (a + b - c)2 where, a,b and c belongs to R. 2. We have three triangles in the figure ...

If the domain of function is {-2,-1,0,1,2} and range is {-4,-3,-2,-1,0,1,2,3,4} how many increasing functions are possible that will satisfy f(n) not equal to +n or -n ? ...

I wiill put up some good questions of AM GM inequality only... So that you all can try them.. some of themwill be very very easy.. others will be a bit more tough... So try them all one by one.. I will try to post them in ord ...

Normal drawn at P(t) having negative ordinate,to parabola y2=10x meets the curve again at Q(t2).If t2 is least then length PQ is ...

Find last non-zero digit in 21!. ...

Circle x2+y2=1 subtends angle θ on a varible point P such that π/3 <θ< π/2 then the area of region generated by locus of point P is: ...

If n4+4n.then number of values of n,nEN is ...

Locus of the centre of the circle touching a given circle and a given straight line is a parabola y2=8x.Then (A)Centre of the given circle is (2,0) (B)If radius of the given cirlce is 2 units then given line must be the direc ...

Set of all positive values of a for which distance of vertex of y=2x2+ax+1 from x-axis is less than distance of vertex of y=-4x2+x+a from x-axis,is ...

Let a,bER and 0<a<1 and 0<b<1 if z1=-a+i,z2=-1+bi and z30 and z1,z2,z3 form an equilateral triangle then (A) (a+ 3 )(b+ 3 )=4 (B)a2-2a-2b=0 (C)(a-2)(b-2)=3 (D)a4-4(a+b)2=0. ...

Prove the following statement to be true: The polynomial p(x)=(ax2+bx+x)(ax2+dx-c),ac is not equal to zero,has exactly two roots ...