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Recent questions tagged q159

The pressure of the atmosphere is $2\times10^{-6}$ at about 100 mile above the earth and temperature is $-180^{\large\circ}C$ .How many mole are there in 1 mL gas at this altitude?

asked Mar 29, 2014 by sharmaaparna1

1 answer

Which of the following does not show geometrical isomerism ?

asked Mar 4, 2014 by meena.p

1 answer

A photon of 300nm is absorbed by a gas and then re-emits two photons. One re-emitted photon has wavelength 496nm. Calculate energy of other photon re-emitted out.

asked Feb 4, 2014 by sharmaaparna1

1 answer

If a , b , c , d are in HP $\;\large\frac{d^{-2}-a^{-2}}{c^{-2}-b^{-2}}\;$ equals

asked Jan 22, 2014 by yamini.v

1 answer

Consider the function $f(x)=|x-2|+|x-5|\;x\in R$.

asked Jan 3, 2014 by sreemathi.v

1 answer

integrate : $\int (x^3-1)^{\large\frac{1}{3}}.x^5$$dx$

asked Dec 24, 2013 by meena.p

1 answer

Which one of the following is resistant to enzyme action ?

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Choose the correct statement from the following :

asked Nov 20, 2013 by thanvigandhi_1

1 answer

Under which one of the following conditions do real gases approach the ideal gas behaviour ?

asked Nov 9, 2013 by thanvigandhi_1

1 answer

The synthetic semi permeable membrane used in Berkeley-Hartley method is

asked Oct 24, 2013 by thanvigandhi_1

1 answer

If $\bar {M}_w$ is the weight - average molecular weight and $M_n$ is the number -average molecular weight of a polymer, the poly dispersity index (PDI) of the polymer is given by

asked Oct 22, 2013 by meena.p

1 answer

Calculate $\Delta H^{\circ}$ for the reaction: $Na_2O+SO_3 \longrightarrow Na_2SO_4$ given the following :

asked Oct 16, 2013 by meena.p

1 answer

Atoms of an element 'A' occupy $ \large\frac{2}{3}$ tetrahedral voids in the hexagonal closed packed ( hcp) unit cell lattice formed by the element 'B' . The formula of the compound formed by 'A' and 'B' is

asked Oct 14, 2013 by thanvigandhi_1

1 answer

The $AT/GC$ ratio in human beings is :

asked Oct 2, 2013 by meena.p

1 answer

In which one of the following, the bond angle is the lowest?

asked Sep 26, 2013 by meena.p

1 answer

The number of hydrogen bonds between Guanine & Cytosine; and between Adenine & Thymine in DNA is :

asked Sep 19, 2013 by meena.p

1 answer

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