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When a block of iron floats in mercury at 0°C, a fraction k1 of its volume is submerged, while at the temperature of 40°C, a fraction k2 is seen to be submerged. If the coefficient of volume expansion is γFe and that of me ...

what is this frictional impulse? ...

Find the temp. at which ΔG=-5.2 kJ/mol, ΔH=145.6 kJ/mol and ΔS=216 J/K/mol for a chemical reaction ...

For two satellites at a distance Reand 7re above the earth's surface ,the ratio of their ...

A cue ball is hit such that when it strikes another ball, it travels with half its velocity V0 in the same direction. Assuming no friction, what is the velocity of the other ball after collision? ...

1) A force F=-K((x i + y j) acts on a particle moving in the x-y plane.(K is a positive constant).Starting from origin if the particle is taken to (a,0) along x-axis and from there to (a,a) parallel to y-axis,the work done y ...

0∫1 1-x /1+x dx a)1 b) (pi)/2 + 1 c) (pi) d) (pi)/2 - 1 the ans is d ...

The dual nature of radiations was proposed by ...

1) Show that for a positive integer n , the co-efficient of xk (0 ≤ k ≤ n) in the expansion of : 1 + (1+x) + (1+x)2 +......+ (1+x)n is n+1Cn-k . ---------------------------------------------------------------------------- ...

hey guys dese r my doubts pls confirm Questions- 1.the no. of solns of the equn (x2-7x+6)/(x2-6x+8)=ex (a)1 (b)2 (c)0 (d)4 my ans:d 2.If x!/y!=(12-y)!/(x2-23x+132)(10-x)!;x,y ε N,then wich one of the following may b true?? a ...

Reaction of HCHO and CH3—CHO in the presence of KOH solution is called ...

Which of the following cannot be used to prepare methane? ...

The maximum value of (1 + 1/sin2α )1/2 (1 + 1/cos2α )1/2 [ if α ε ( 0 , Π/2) ] is .............???? ...

If w1 w2 w3 r the works done in isothermal , adiabatic , & isobaric processes , the correct order will be , if ΔV is same for all the processes (A) w1 > w2 > w3 (B) w3 > w2 > w1 (C) w3 > w2 > w1 (D) w3 > ...

When a solution containing non volatile solute freezes , which equillibrium wud exist ?? (A) Solid - solvent <-----> Liquid Solvent (B) Solid solute <----->Liquid solution (C) Solid solute <----> Liquid solv ...

Using Pt electrode (A) Dil solution Hcl (P) O2 evolved at anode (B) dil solution of Nacl (Q) H2 evolved at cathode (R) cl 2 evolved at anode (S) Na deposited at cathode ...

tHE NO OF FORMULA UNITS of Nacl in one unit cell r??? ...

lead [4 ] oxide is obtained by : ...

The rate constant of a reaction at temperature 200K is 10 times less than the rate constant at 400K, find the activation energy of the reaction ...

Electronic configuration of Co3+ is 4s2 3d 4 TRUE / FALSE ...

find the tangent of angle between two diameters of ellipse x2/4+y2/3=1 through P(π/6) and Q(2π/3) ...

find the parametric form of ellipse 4x2+9y2-40x+36y+145=0 ...

In the freezing point depression experiment, it is observed that (a) the decrease in freezing point of CH3COOH(Y) is lower than that of 0. 1 M of CH3COOH(Y) in water. (b)the decrease in freezing point in the two solutions is ...

Find dy/dx at x=1, y=e(x)x ...

The effective resistance between points if resistances are as shown and ring is resistance less will be *Image* (a) 7R/6 (b) 11R / 38 ...

Which of the following compounds undergo easy decarboxylation? (a) *Image* (b) *Image* (c) *Image* (d) *Image* ...

*Image* THE PRODUCT IS AN AMINE TRUE/FALSE ????? ...

Identify the major product (3) formed in the following sequence of reactions. *Image* (a) *Image* (b) *Image* (c) *Image* (d) Both b and c ...

In a progressive wave in a string, consider an element. Mechanical energy of an element is constant. -----> TRUE/FALSE ????? ...

Equation of angle bisector of the lines 3x+4y-1 =0 and 12x+5y-3=0 containing the point (1,2) is A) 3x + 11y - 4 =0 B) 99x - 27y - 2 =0 C) 3x + 11y + 4 = 0 D) 99x + 27y - 2 = 0 ...