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how do we infer which of the following disproportionate in aqueous solution; NO2 , N2O5 , N2O3 , Cl2O6 , ClO2 , Cl2O7 , SO2 , SO3 , P4O10. ...

Consider a case when a block is placed on a horizontal platform at rest. It then starts accelerating with a constant acceleration such that, Friction present between the block and the horizontal platform > mass times its a ...

1) The length of the bases of a triangle are of integral length. If the length of the two of the 3 alititudes are 4 and 12 cm respectively then find the length of the 3rd one. a) 4 b) 5 c) 6 d) 7 ...

Is there any website where we can ask doubts for JEE and they answer soon for free or for money less than 100 rs?? ...

q) A chain is held on a frictionless table with (1/n)th of its length hanging over the edge. If the chain has a lenth L and mass M, how much work is required to slowly pull the hanging part back on the table? ...

What all values should we know beforehand to make numericals easy? I mean....memorising values for (log2,log3,log5,...log11), (1/3,1/4,1/5,.......1/11),( 2 , 3 ,....) like that ?? ...

which of the following is the non polar species? a- AsO3-1 b- SO3-2 c- ClO3-1 d- NO3-1 guys how to solve it? ...

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\textbf{Let}\; a \; \textbf{and} \; b \; \textbf{be the Real Parameters. One Root of the equation} \\\;x^{12}-abx+a^2=0 \; \textbf{is greater than} \;\;2,\textbf{then find minimum value of }\; |b| ...

bisector of an angle divides the triangle into two similar triangles. True or false?. In a.s. Prakashan,it is true. In arihant,it is false. ...

\hspace{-16}$Let $\mathbf{x^n+a_{1}.x^{n-1}+a_{2}.x^{n-2}+a_{3}.x^{n-3}+.......+a_{n}=2011}$\\\\ Where $\mathbf{a_{i}\in \mathbb{Z}\;\forall \;i\in \left\{1,2,3,....,n\right\}}$ has $\mathbf{4}$ Integrals Roots.\;\\\\ Then th ...

p(x) = x5 + x2 +1 have roots x1 , x2,x3,x4,x5. g(x) = x2-2. then the value of g(x1).g(x2).g(x3).g(x4).g(x5) - 30g(x1.x2.x3.x4.x5) is ? ...

find the number of values of x at which the function y=cos x + cos √2x is maximum is? options 0 2 1 infinite ...

Consider a triangle ABC formed by three points t1 , t2 , t3 on the parabola y2=4ax. The focus S is the orthocentre of the triangle. Calculate : (t1-1)(t2-1)(t3-1) ...

In a stationary wave that forms as a result of reflection of waves from an obstacle the ratio of the amplitude at an antinode to the amplitude at node is K. Find the percent of Total Energy reflected. ...

http://www.faceiit.com/iitjee/study_material_jee.php many test papers and study material available... ...

The eq x3+ax2y+bxy2+y3 represents 3 straight lines. if 2 of them r perpendicular then find the eqn of the 3rd line.. ...

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\hspace{-16}\mathbf{\int_{0}^{\pi}\frac{25\sin x+2\cos x}{(625\sin^2 x+4\cos^2 x)}dx=} ...

When it comes to electronic configuration if Cr is an exception then why not carbon? see the image below *Image* ...

x/a + y/b + z/c = 1 intersects the coordinate axes at A,B,C. if triangle PQR has mid points A,B,C then which of the following is/are true ; 1)ar(triangle PQR) = 2 √(a2b2+b2c2+c2a2) 2) foot of normal to triangle AC from O is ...

\hspace{-16}$Find all Complex no. $\mathbf{z}$ that satisfy the equations\\\\ $\mathbf{\ | z+3|+|z-3|=10}$ and $\mathbf{\ |2z+3i|=\sqrt{109}}$. ...

\hspace{-16}$The Least value of $\mathbf{S=\mid z-2-3i\mid+\mid z-4+3i\mid+\mid z-1-i\mid}$\\\\ Where $\mathbf{z\in \mathbb{C}}$ ...

\hspace{-16}$Evaluate $\mathbf{\sum_{k=1}^n \left\{\tan (2)^{k-1}.\sec(2)^k\right\}=}$\\\\\\ Where $\mathbf{\left\{x\right\}\neq }$ a fractional part function. ...

1) what is the hybridisation state of central atom in the cationic part of the solid form of XeF6? (A) sp3 (B) sp3d2 (C) sp3d (D) dsp2 [please don't google. i have the answer but didn't get it myself..so jus wanted to check h ...

It is well known that, "Neil bohr failed in his model in which he described an electron as a charged particle moving in well defined circular orbits about the nucleus." However he failed because of the two major reasons.. a) ...

how many 4digit numbers are there whose sum of the digits is odd? ...

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Q: Functions f(x) and g(x) are defined in [a,b] such that f(x) is monotonically increasing while g(x) is monotonically decreasing. If it is given that range of f(X) and g(x) are subsets of the domain, then find the domain and ...

ur approach...................?? q) In a triangle ABC, AC = BC then sin [ 3(A + B)/4 ] equals... i) Sin { B + 2C/2 } ii) Sin { A + 2C/2 } iii) Sin { B + 4C/2 } iv) Sin (B - 3C) ...