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Recent questions tagged q182
ASK
The composition of the equilibrium mixture $(Cl_2\iff2Cl)$ which is attained at $1200^{\large\circ}C$ is determined by measuring the rate of effusion through a pinhole . It is observed that at 1.80 mm Hg pressure , the mixture effuses 1.16 times as fast as krypton effuses under the same conditions. Calculate the fraction of chlorine molecules dissociated anto atoms.(Atomic wt of Kr = 84)
jeemain
chemistry
states-of-matter
kinetic-molecular-theory-of-gases
unit5
class11
difficult
q182
asked
Apr 5, 2014
by
sharmaaparna1
1
answer
Acetaldehyde is the rearranged product of
jeemain
chemistry
class11
organic-chemistry
q182
easy
basic-organic-chemistry
ch12
asked
Mar 5, 2014
by
meena.p
1
answer
Rutherford proposed the atomic model after his most striking experiment on $\alpha$ – scattering leading to discovery of nucleus. Bohr later on modified the atomic model on the basis of Planck’s quantum theory of light and proposed the concept of stationary circular orbits of quantised energy $\large\frac{nh}{2\pi}$. The collection of fine lines in line spectrum led Sommerfeld to gave the idea of elliptical orbits. He successfully explained the existence of subshells and their number in a shell. The angular momentum of subshells was propped as $\sqrt{l(l+1}\times\large\frac{h}{2\pi}$. The emission of a spectral line in atomic spectra was supposed to be due to the jump of electron from one energy level to other. Then the volume occupied by the nucleus is about .....times of volume of atom.
jeemain
chemistry
atomic-structure
unit2
class11
easy
q182
asked
Feb 8, 2014
by
sharmaaparna1
1
answer
If $S_{n}=\large{1}{6}\;n(n+1)(n+2)$ $\forall\;n\;\geq\;1$, then $lim_{n \to \infty}\;\sum_{r=1}^{n}\;\large\frac{1}{a_{r}}$ equals
jeemain
math
class11
ch9
sequences-and-series
difficult
sum-of-n-terms-of-special-series
q182
asked
Jan 23, 2014
by
yamini.v
1
answer
$\lim\limits_{x\to \infty}\cos(\large\frac{x}{2})$$\cos(\large\frac{x}{4})$$\cos(\large\frac{x}{8})$$........\cos(\large\frac{x}{2^n})$ is
jeemain
math
ch13
limits and derivatives
limits-of-trigonometric-functions
difficult
q182
asked
Jan 6, 2014
by
sreemathi.v
1
answer
Integrate : $\int \limits_0^{\pi/2} \bigg( \large\frac{\theta}{ \sin \theta }\bigg)^2.$$ d \theta $
jeemain
math
class12
ch7
integral-calculus
integration-using-partial-fractions
difficult
q182
asked
Dec 30, 2013
by
meena.p
1
answer
Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide ?
aipmt
modelpaper
biology
2008
q182
asked
Dec 21, 2013
by
thanvigandhi_1
0
answers
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