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HCV pg 35 q 33 A uniform tube closed at one end,ccontains at one end contains a pallet of mercury 10cm long.When the tube is kept verticallywith the closed end upward,length of the air colummn trapped is 20 cm. Find the lengt ...

if an=Σ 1 / nCr,then Σ (n-2r) / nCr=??{answer in terms of an} ...

∫ 1/√3 sin x + cos x dx (there is no square root on sinx it's just √3 sin x is outside root.) [ ans - 1/2 log l tan ( x/2 + pi/12 ) + c ] ...

PROVE THAT (( a/b )α +1)1/α < (( a/b ) β+1)1/β where α > β ...

q1> Under which category does dative bond come - Sigma bond or pi bond ? q2> Arrange in increasing order of ease H-Shift,Alkyl shift,Ring expansion q3> Draw Structure of IFCl ...

A triangle ABC with vertices A(-1,0) B(-2, 3/4) C(-3, -7/6) has its orthocentre at H. Then the orthocentre of triangle BCH will be A) (-3,-2) B) (1,3) C) (-1,2) D) None of these ...

Prove that nCm+n-1Cm+n-2Cm+.....+mCm=n+1Cm+1 ...

there is a set A={a1.a2.....an}.the total no. of subsets with even no. of elements answer 2n-1 ...

k-1Ck-1 + kCk-1 +........+n+k-2Ck-1=? Answer- n+ k-1Ck ...

total no. of triangles with side length a,b,c if the triangle satisfies the condition that a<=b<=c. is answer 1/4 (c+1)2 if c is odd 1/4 c2 if c is even ...

In = - x n-1( a2 - x2 ) 3/2/n + 2 + kIn-2. then the value of k is ........................... [ ans. ------ n - 1/n + 2 a2 ] ...

q1>Find points of discontinuity \begin{Bmatrix} [cos(\pi x)] & x\leq 1 \\ \left|2x-3 \right|[x-2] & x>1 \\ \end{Bmatrix} q2> FInd points of dicontinuity \begin{Bmatrix} 2x+1 & x\epsilon Q \\ x^2 & x\epsilon \bar{Q} \ ...

*Image* my salute to the genius for his 200!! ...

which is the best college for aeronautical engineering ...

If tan x = n tan y , then prove that x = y - m sin 2y + m2/2 sin 4y - m3/3 sin 6y + . . . . . . . . . . . . . where m = 1 - n/1 + n . ...

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Lyophilic sols are A. Irreversible sols B. They are prepared from inorganic compound C. Coagulated by adding electrolytes D. Self-stabilizing Should not the ans be C ?? Fiitjee has given A as Ans. ...

relative density of a material is found by ratio of weight in air and decrease in weight in water. If weight of a body in air and water are measured as W in air = (10.0+-0.4)g and W in water = (5.0 +- 0.1)g, then percentage e ...

Why keto form is more stable than enol form???????[in general excluding special cases] ...

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In case of standing waves in a string, energy of oscillations in nth overtone will be n2 times of that in first overtone. TRUE / FALSE ...

charged particle mass m ,charge q valocity v is projected radially in solenoid (radius R,turns per unit lentgh =n ,current =I). 1)Find time taken,angle subtended at centre of solenoid. 2)Find velocity of projection (tangentia ...

Charged particle mass m charge q is porjected perpendicular to magnetic field .Find angular deflection,sideways deflection and impulse of magnetic forces if b<mv/Bq *Image* ...

f:R--> R f(x) = {x+7 , xεQ {√7-x , xεQ c , then f is A) one-one and onto B) one-one and into C) many-one and onto D) many-one and into ...

STATEMENT--1 *Image* STATEMENT--2 tHE PRESENCE--NO2 group makes the benzene ring less susceptible to oxidation. So the other ring gets ruptured. ...

\int_{0}^{2\pi}{e^{cos\alpha}cos(sin\alpha)d\alpha . ...

what will be the major product when (+)NO2 reacts with.. (i) Ph-COOPh (ii) Ph-Ph (iii) Ph-Ph-Ph explain the answers please... as this is my first major product question.... dbts... a) How to know wat ll be the products at all ...