Consider the fission reaction
`.^(235)U+nrarrX+Y+2n`
Rank the following possible nuclides for representation by X (orY), most likely first:
(a) `.^(152)Nd`, (b) `.^(140)I`, (c) `.^(128)In`, (d) `.^(115)Pd`, (e) `.^(105)Mo`

A generic fission event is ""^(235)U+ntoX+Y+2n Which of the following pairs cannot represent X and Y: (a) ""^(141)Xe and ""^(93)Sr (b) ""^(139)Cs and ""^(94)Rb (c) ""^(156)Nd and ""^(79)Ge d. ""^(121)"In" and ""^(113")Ru ?

Which of the following is correct regarding nuclear fission? (i) The process in which a heavy nucleus is broken into two nearly equal fragments, is called ‘Nuclear Fission’ (ii) Nautral uranium has two istopes, ._(92)U^(238) and ._(92)U^(235) in the ratio 1 : 0.07 . the fission of U^(235) takes place only by fats neutrons, whereast that of U^(235) is possible by slow neutrons (iii) One of the reaction for fission of U^(235) ._(92)^(236)U+._(0)^(1)nrarr._(92)^(236)Urarr._(52)^(144)Ba+._(36)^(89)Kr+3_(0)^(1)n + energy (iv) In the fission of one U^(235) nucleus, about 200MeV of enegry of obtained. Most of this enegry is obtained from of K.E. of fragments obtained by fission, the rest of obained as K.E. of emitted neutrons, gamma -rays, heat and light radiation

If x+i y=(1+i)(1+2i)(1+3i),\ t h e n\ x^2+y^2 is: (a) . 0 (b) . 1 (c) . 100 (d) . none of these

Let y(x) be a solution of the differential equation (1+e^x)y^(prime)+y e^x=1. If y(0)=2 , then which of the following statements is (are) true? (a) ( b ) (c) y(( d ) (e)-4( f ))=0( g ) (h) (b) ( i ) (j) y(( k ) (l)-2( m ))=0( n ) (o) (c) ( d ) (e) y(( f ) x (g))( h ) (i) has a critical point in the interval ( j ) (k)(( l ) (m)-1,0( n ))( o ) (p) (q) ( r ) (s) y(( t ) x (u))( v ) (w) has no critical point in the interval ( x ) (y)(( z ) (aa)-1,0( b b ))( c c ) (dd)

Complete the following nuclear equation by suppling the symbol for the other product of the fission : ._(92)^(235)U+_(0)^(1)n rarr _(38)^(94)Sr +………+2_(0)^(1)n a) ._(54)^(139)Xe b) ._(54)^(140)Xe c) ._(64)^(104)Gd d) none of these

A curve is such that the mid-point of the portion of the tangent intercepted between the point where the tangent is drawn and the point where the tangent meets the y-axis lies on the line y=xdot If the curve passes through (1,0), then the curve is (a) ( b ) (c)2y=( d ) x^(( e )2( f ))( g )-x (h) (i) (b) ( j ) (k) y=( l ) x^(( m )2( n ))( o )-x (p) (q) (c) ( d ) (e) y=x-( f ) x^(( g )2( h ))( i ) (j) (k) (d) ( l ) (m) y=2(( n ) (o) x-( p ) x^(( q )2( r ))( s ) (t))( u ) (v)

A curve is such that the mid-point of the portion of the tangent intercepted between the point where the tangent is drawn and the point where the tangent meets the y-axis lies on the line y=xdot If the curve passes through (1,0), then the curve is (a) ( b ) (c)2y=( d ) x^(( e )2( f ))( g )-x (h) (i) (b) ( j ) (k) y=( l ) x^(( m )2( n ))( o )-x (p) (q) (c) ( d ) (e) y=x-( f ) x^(( g )2( h ))( i ) (j) (k) (d) ( l ) (m) y=2(( n ) (o) x-( p ) x^(( q )2( r ))( s ) (t))( u ) (v)

If sqrt(a+i b)=x+i y ,\ then possible value of sqrt(a-i b) is a. x^2+y^2 b. sqrt(x^2+y^2) c. x+i y d. x-i y e. sqrt(x^2-y^2)