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Recent questions tagged q121

At high temperature and low pressure , the Van der Waal's equation is reduced to

asked Mar 3, 2014 by sharmaaparna1

1 answer

$CH_2 =CH CH_2CH =CH_2 \longrightarrow A,\;A $ is ?

asked Feb 28, 2014 by meena.p

1 answer

Which of the following statement is correct?

asked Feb 27, 2014 by sreemathi.v

1 answer

Find the equation of an rectangular hyperbola whose centre is origin and its asymptotes coincide with the co-ordinate axes?

asked Feb 10, 2014 by sreemathi.v

1 answer

Let $S=\frac{3}{19}+\frac{33}{(19)^2}+\frac{333}{(19)^3}+$......$\infty$. Find $S$.

asked Jan 21, 2014 by yamini.v

1 answer

Energy required to stop the ejection of electrons from $Cu$ plate is 0.24eV.Calculate the work function when radiations of $\lambda=253.7nm$ strikes the plate.

asked Jan 17, 2014 by sreemathi.v

1 answer

If $\overrightarrow u=\hat i+\hat j,\:\overrightarrow v=\hat i-\hat j\:and\:\overrightarrow w=\hat i+2\hat j+3\hat k$ and $\overrightarrow n$ is a unit vector such that $\overrightarrow n.\overrightarrow u=\overrightarrow n.\overrightarrow v=0$, then $|\overrightarrow n.\overrightarrow w|=?$

asked Jan 13, 2014 by rvidyagovindarajan_1

1 answer

Find the value of p for which the function $f(x)=\left\{\begin{array}{ 1 1}\large\frac{(4^x-1)^3}{\sin\big(x/p\big)\log \big(1+\Large\frac{x^2}{3}\big)}&x\neq 0\\12(\log 4)^3&x=0\end{array}\right.$ is continuous at $x=0$

asked Dec 31, 2013 by sreemathi.v

1 answer

Integrate : $\int \limits _0^{\frac{\pi}{4}} \large\frac{\sin 5 x}{\cos 7x}$$dx$

asked Dec 20, 2013 by meena.p

1 answer

Which one of the following pairs of nitrogenous basis of nucleic acid, is wrongly matched with the category mentioned against it ?

asked Dec 18, 2013 by thanvigandhi_1

0 answers

The radial probability distribution curve obtained for an orbital wave function $ \Psi $ has 3 peaks and 2 radial nodes. The valence electron of which one of the following metals does this wave function $ ( \Psi )$ correspond to ?

asked Nov 18, 2013 by thanvigandhi_1

0 answers

$C_6H+6+O_3 \longrightarrow \: \: \: X \: \: \: \underrightarrow{Zn/H_2O} \: \: \: Y$

asked Nov 4, 2013 by thanvigandhi_1

1 answer

An electronic transition in hydrogen atom results, in the formation of $H_{\alpha}$ line of hydrogen in Lyman series, the energies associated with the electron in each of the orbits involved in the transition (in $kCal mol^{-1}$) are

asked Oct 21, 2013 by meena.p

1 answer

Chlorine reacts with ammonia and gives nitrogen. The ratio of chlorine to ammonia in this reaction is

asked Oct 20, 2013 by thanvigandhi_1

1 answer

Given that $\Delta H_f(H)=218 kJ/mol,$ express the $H-H$ bond energy in Kcal/mol:

asked Oct 14, 2013 by meena.p

1 answer

Which one of the following statements is correct?

asked Oct 13, 2013 by thanvigandhi_1

1 answer

Which one of the following of an electron in hydrogen atom emits radiation of the lowest wavelength ?

asked Oct 1, 2013 by meena.p

1 answer

A metal nitride contains $28 \%$ nitrogen by weight. The molecular formula of metal nitride is $M_3N_2$. What is the atomic weight of metal?

asked Sep 24, 2013 by meena.p

1 answer

The number of radial nodes of $3s$ and $2p$ orbitals respectively are :

asked Sep 18, 2013 by meena.p

1 answer

Which of the following is correct?

asked May 27, 2013 by poojasapani_1

1 answer

The normal to the rectangular hyperbola $xy=9$ at$(6,\frac{3}{2})$ meets the curve again at

asked May 14, 2013 by poojasapani_1

1 answer

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