Recently Active Questions

\left ( 1+\frac{1}{3} \right )\left ( 1+\frac{1}{3^2} \right )\left ( 1+\frac{1}{3^4} \right )\left \left ( 1+\frac{1}{3^8} \right )..........................\left ( 1+\frac{1}{3^{2^n}} \right ) ...

How to find the square root of 1- i ? ...

In a triangle ABC ,AD is the perpendicular to BC .the inradii of ADC,ADB and ABC are x,y,z .find the relation between x ,y and z? note::the relationship shud have only x y and z.....no oder variable. ...

The given graphs show the variation of photoelectric current(I) with applied voltage for two different intensities of the incident *Image* ...

Molar conductivity?? specific conductivity ?? conductivity?? conductance?? are they same?? ...

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prove that... If a ball of mass m collides with another stationary ball of mass M then the maximum angle of deviation of the ball of mass m is sin-1M/m ...from post (http://targetiit.com/iit_jee_forum/posts/balls_in_a_semi_ci ...

match--- 1.Cl2O a. acidic oxide 2.ClO2 b. HOCl 3.Cl2O6 c. HClO2 4.Cl2O7 d. HClO4 ...

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when Fe(s) is dissolved in aq HCl in a closed vessel, the work done is? positive,negative or 0?? and why? ...

cosnθ = [P][/n] (cosθ) [P][/n] is a polynomial of degree n like [P][/2] = 2x^{2}-1 (n is a natural no.) then find (x+\sqrt{x^{2}-1})^{n} +(x-\sqrt{x^{2}-1})^{n} in terms of [P][/n] ...

1. Among the following, the surfactant that will form micelles in aq. solution at the lowest molar concentration and ambient conditions is a) CH3(CH2)15N+(CH3)3Br- b) CH3(CH2)11OSO-3Na+ c)CH3(CH2)6 COO-Na+ d) CH3(CH2)11N+(CH3 ...

i know this is not directly integrable, bt i'm nt getting any way to directly derive this relationship if \int_{0}^{1}{\frac{e^{t}}{t+1}} =a and \int_{3}^{4}{\frac{e^{t}}{t-5}} =b then find the relation btw a and b??? ...

Q1 If roots of x3-px2-r=0 are tanα,tanβ,tanγ ,find value of sec2α.sec2β.sec2γ I did by converting secx into tanx and then using equation to solve ......any better method ?? Q2 Prove that sinx/cos3x + sin3x/cos9x + sin9x ...

*Image* correct ans are a,c,d...... Plz giv the explanation for option c. ...

A first order reaction,A --->B,requires activation energy of 70 kJ/mol.When a 20 % solution of A was kept at 25oC for 20 minutes,25 % decomposition took place. What will be the percent decomposition in the same time in a 3 ...

The nucleidic ration,3H1 to 1H1 is 8.0 x 10-18:1.Tritium undergoes decay with the half life period of 12.3 yrs.How many tritium atoms would 10g of such a sample contain 40 yrs after original sample is collected ? ...

Which of the following alloys contain(s) Cu and Zn ? A. Bronze B. Brass C. Gun metal D. Type metal According to me ans should be B,C.. but fiitjee has given A,B,C.Pls confirm. ...

Q)→Match the column tell the (t) option in column B corresponds to which options in column A column A column B A) B2 B) N2 (t) Mixing of 's' and 'p' orbitals. C) O2- D) O2 [pls give the satisfactory explanation for ur answe ...

Which compound does not dissolve in hot dil HNO3 ? A. HgS B. PbS C. CuS D. CdS ...

*Image* correct ans are a,c Plz explain ...

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*Image* since the botom surface of cylinder is in liquid B then how can buoyant force can be aplied by liquid A on cylinder in upward direction as no bottom surface is in liquid A ? also it views that liquid A will apply forc ...

give the full solution 4 pipes fill a cisern in 15,20,30 and 60 hrs .The first was opened at 6 am,the second at 8am,and the thrid at 10 am and the fourth at noon .When will the reservoir be full? ...

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ALKALI METALS (specially for anand) (IIT syll: Oxides, peroxides, hydroxides, carbonates, bicarbonates, chlorides and sulphates of sodium, potassium, magnesium and calcium) Alkali and alkaline earth metal hydroxides Solubilit ...

For a negatively charged colloidal solution, the flocculation value of electrolyte is minimum in case of 1. Potassium citrate 2. Potassium formate 3.Potassium acetate 4. All have equal value ...

Find the locus of point of chord of contact of tangents from which to the ellipse x2/a2 +y2/b2=1 touches the circle x2+y2=c2 couldnt understand what question wants ??? ...

CHEM Q1. What is the structure of NaCl? (a) bcc (b) fcc (c) interpenetrating fcc (d) NOT Q2. Diabetes is detected by testing urine of patient with _____ Q3. (NH4)2Cr2O7 + Ba(N3)2 --> N2 + ___ + ___ Q4. What are heterolepti ...

Two charges +q1 and -q2 are placed at A and B respectively. A line of force emanates from +q1 at an angle \alpha with AB. At what angle \beta will it terminate at -q2 ? *Image* A) sin^{-1}[\sqrt{\frac{q_{1}}{q_{2}}}sin\frac{\ ...