Recently Active Questions

The equill const Kp for the rcn. X +Y *Image* Z is found to vary with temp as shown in graph Explain how the following conclusions can be drawn fron it: 1) The equill mix contains a high proportion of Z at high pressures 2) T ...

Find the no. of integral solutions of l x-30 l + l 50 - x l = 20 ...

An insect is at the bottom of a tree that is 12m tall. Its takes 3 min 20 secs to crawl around the base of the trunk once. After this the insect starts to crawl up the trunk of the tree in a regular spiral. It makes 4 rounds ...

1) Area bounded by the curves y 2 (2a-x) = x3 and the line x=2a is (a) 3∩a2 (b) 3∩a2 / 2 (c)3∩a2/4 (d) none of these 2)Area included between the parabola Y = x2 / 4a and the which of the Agnesi Y = 8a3/x2 + 4a2 is (a) a ...

The equilibrium constant Kp for the following reaction at 191.C is 1.24.What is Kc? A--6.7 B--0.61 C--8.30 D--0.2 I used Kp=Kc(RT)Δn but failed to match any option.. ...

This one is relatively simpler compared to the other question we have solved.. \left[\frac{n}{3}\right]+\left[\frac{n+2}{6}\right]+\left[\frac{n+4}{6}\right]=\left[\frac{n}{2}\right]+\left[\frac{n+3}{6} \right] ...

*Image* which of the following intervals best describes the range of K? 1. (1/2, ∞) 2. (1, ∞) 3. (1/4, ∞) 4. [1, ∞) 5. (3/4, ∞) ...

The molecules in a heated metal block are vibrating at a frequency of 1.51*10^15 Hz. How many levels of energy are possible for the molecules between 2*10^-7 J and 13.6*10^-7 J ? (h = 6.626*10^-34Js) ...

After SHM SHM here is waves tread..i dont have a lot of questions on this topic..but i will psot some good ones for all.... Here are first 5 questions..i will post more if they are solved.. Q1 *Image* Q2 *Image* Q3 How long w ...

40 atoms of radioactive element x( t→1/2=10 hours) r present.how many r likely to remain after 40 hours.... a. 1 b. 2.5 c. 5 d. 3 since radioactivity follows 1st order kinetics so t half should remain constant and by doing ...

Q charge is uniformly distributed over the same surface of a right circular cone of semi-vertical angle θ and height h. The cone is uniformly rotated about a vertical axis passing through its vertex with ω. Calculate the as ...

Find the total number of three number A.P's in sequence 1,2,3,4...n? ...

if....\theta =\frac{2\pi }{2009}.... then.....cos\theta cos 2\theta cos 3\theta ..............cos 1004\theta ........is equal to ..... ...

If the percentage error in measuring the surface area of a sphere is x%,then find the error in its volume. ...

Find the number of ways of selecting n objects out of 3n objects,of which n are alike and rest are different ...

Find the number of ways in which we can choose 2 distinct integers from 1 to 200 so that the difference between them is atmost 20. ...

A current I flows in a long thin walled cylinder of radius R. What pressure do the wall of the cylinder experience?? This went over my head completely. So please give detailed explanation ...

*Image* Ease of SN1 ractions among these compounds upon tratment with Aq NaOH will be in the order as: (a) I >II >III>IV >V (b) IV>I>III>II>V (c) I>IV>III>II>V (d) V> IV>III>II> ...

i hav problems with sign conventions in work,power,energy somebody told me to use co-ordinate sign conventions in the whole of mech.. is it a good idea ...

Ques1) Standard electrode potentials are Fe 2+ / Fe ( E° = -0.44 V) Fe 3+ / Fe2+ (E° = 0.77 V) If Fe 2+, Fe 3+ and Fe blocks are kept together , then (a) Fe3+ increases (b) Fe3+ decreases (c) Fe2+ / Fe3+ remains unchanged ( ...

A uniform pressure P is exerted to all the sides of a solid cube at temperature T°C.By what amount should the temperature of the cube be raised in order to bring its volume back to the volume it had before pressure was appli ...

this is wolff rearrangement naaa ???? *Image* but i ma not gtting correct answer......plz help ...

IT'S NOT SO EASY ? *Image* ...

Prove that- 2C0/1 + 22C1/2 + 23C2/3 +...+ 2n+1Cn/n+1 = 3n+1-1/n+1 ...

Ques2) Based on the following information arrange the four metals A, B, C and D in order of decreasing ability to act as Reducing agents : (I) Only A,B, and C reacts with 1 M H Cl to give H 2 (g) (II) When C is added to solut ...

please explain what does max { |x| , |y| } ≤ 4 . stand for in the foll ques????? Cosnider the region R which is enclosed by the curve y ≥ √ 1 - x2 and max { |x| , |y| } ≤ 4 . The slope of a family of lines defined as ...

If n is odd natural number then show that \sum_{r=0}^{n}{\frac{(-1)^r}{^nC_r}}=0 ...

What is last date for enrollment for Brilliant test series 2010? When does test series start ? Anyone having schedule ? Where is form available?I can't find it on the site. Can anyone give the link to download form please. ...

The Schrodinger wave equation for H-atom is \large \Psi = \frac{1}{4\sqrt{2\Pi }}(a_0{})^-\frac{3}{2}{}\left(2 - \frac{}{r_0{}}a_0{} \right)e^-\frac{r_0{}}{a_0{}}{} Where a0 is Bohr's Radius,if the radial node in 2s be at r0 ...

how many of u r giving fiitjee aits part test 1 on 25th??? ...