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1.16 g CH3(CH2)nCOOH was burnt in excess air & the resultant gases ( CO2 & H2O )were passed thru excess NaOH solution . The resulting solution is divided into 2 equal parts.One part required 50 mL of 1 N Hcl for neutralizatio ...

i was just goin hrough ncert when i came across the fact "basicity in group 5 decreases down the grup......while reducing tendency increses ....now how is it possible... reducing tendency increases means it will it self oxidi ...

The ideal gas model assumes that there are no interactions between gas particles. Particles in a real gas do interact through a range of forces such as dipole–dipole forces, dipole–induced– dipole forces, and van der Wa ...

if x+ 1/x =1 p=x1000+ 1/x1000 q be last digit in the num 22n+1 n>1 find p+q ...

Equivalent conductance=Λ= κ/C of a C normal solution, so am I right in presuming that κ=CΛ is the equivalent CONDUCTIVITY? If so , we have to plot κ vs C of a strong electrolyte I tried to proceed as follows : Λ=Λ0- b ...

evalute this limit \lim_{x\rightarrow \infty }x^{3}\left\{\sqrt{x^{2}+\sqrt{1+x^{4}}}-x\sqrt{2} \right\} ...

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Which of the following are state functions? (A)Internal Energy (B)Composition (C)Pressure (D)Temparature (E)Vo;ume (F)Work ...

Which of the following statements is correct about the conduction of electricity in pure crystal of Si at room temparature? (A)The conduction is due to the holes formed from the release of electrons (B)The conduction is due t ...

A wooden block, with a coin placed on its top, floats in water as shown in figure. The distance l and h are shown there. After some time the coin falls into the water. Then (A) l decreases and h increases (B) l increases and ...

1)...... let A0 denotes the area bounded by f_{n}(x)=\left|\frac{sin(8nx)+cos(8nx)}{x} \right| , x -axis,y-axis and the line x=\pi /8 the prove that A_{n}>\frac{2\sqrt{2}}{\pi }\left[1+\frac{1}{2}.......\frac{1}{n} \right] ...

A massive vertical wall is approaching a man at a speed u. When it is at a distance of 10 m, the man throws a ball with speed 10 m/s at an angle of 37° which after completely elastic rebound reaches back directly into his ha ...

Here are a few questions from fiitjee RSM whose answers i would like to verify as i am not too sure about them: Single option correct: 1. extraction of Zn from Zns is done by a)electrolytic reduction b)roasting followed by re ...

10 ml saturated solution of Na2SO4 gives .233gm of whit ppt of barium sulphateon reaction with barium chloride.wht is solubility of sodium sulphate ...

BOIling point f benzene is 80* C....wht is latent heat of vaporization if 1 molal solution of a non-electrolyte in benzene boils at 85.12*C...express result in KJ/mol ...

http://gravityandlevity.wordpress.com/2009/05/02/when-nature-plays-skee-ball-the-meaning-of-free-energy/ ...

Calculate the vapour pressure of solution having 3.42 g cane sugar in 180 g of water at 40 °C and 100 °C .Given that boiling point of water is 100 °C and heat of vaporization is 10 Kcalmol-1 in the given temperature range. ...

Q1 r=0Σn nCr cosrx.sin(n-r)x =?? Q2 (1+ nC0/nC1 )(1+ nC2/nC1 ).....(1+ nCn/nCn-1 )=??? ...

A balloon of diameter 20 meter weighs 100 Kg.Calculate its pay load , if it is filled with He at 1.0 atm and 27 °C. Density of air is 1.2 Kgm-3. [R=0.082 dm3 atm K-1 mol-1 ] ...

If a, b, c are 3 non-coplanar unit vectors then, what is the value of [a b c]? a). 1 b). 1/2. c). 0 d) None of these. ...

The foot of perpendicular from the point (0, 0, 0) to the line of the intersection of the planes x + y + z = 4 & 2x + y + 3z = 1 is a point A.Find the equation of the line OA. ...

Just to be sure, can someone give a solution to these:- x=\sum_{n=0}^{\propto}{cos^{2n}\phi} y=\sum_{n=0}^{\propto}{sin^{2n}\phi} z=\sum_{n=0}^{\propto}{sin^{2n}\phi cos^{2n}\phi} Then find the relation(s) between x, y and z. ...

f:R\rightarrow R satisfies the following relation: f(x+1)f(x)+f(x+1)+1=0 prove that f is not continuous. ...

Some simple suitable ones for practice- 1) Which of the following cannot form Grignard Reagent ? a) CH3CH2Br b) CH2=CHBr c) HC≡CCH2Br d) CH2=CHCH2Br 2)CH3CH2Br ---(NH3)---> CH3CH2NH2 (Given 2b true), Hence.. *Image* What ...

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A team needs 7 runs to win from 3 balls. both batsmen at crease are at 94 runs each. At end of the match , both batsmen score centuries and the team wins.how is it possible?BOTH BATSMAN SHOULD BE NOT OUT. ...

U hav been given 4 zeros , and u hav to make the number 120 out of them , u can carry out any mathematical operation on these 4 zeros , but only valid ones , for eg: 0 + 0 , 0 - 0 , etc but u shud get the no.120 out of only t ...

MORE THAN ONE OR ONE 1) For a first order reaction(with a single reactant) the concept of half life (t1/2 = 0.693/k) fails when the reacting molecules are less.Based on this which of the following statements is appropriate? ( ...