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Recent questions tagged q156

5g of ethane are confined in a bulb of 1 litre capacity . The bulb is so weak that it will burst if the pressure exceeds 10 atm. At what temperature will be the pressure of gas reach the bursting value?

asked Mar 28, 2014 by sharmaaparna1

1 answer

How many stereo isomers does this molecule have $CH_3CH =CHCH_2CHBrCH_3$

asked Mar 4, 2014 by meena.p

1 answer

For what relation will the circle touch each other $S_1=x^2+y^2+2gx+2fy=0$ and $S_2=x^2+y^2+2g'x+2f'y=0$?

asked Feb 12, 2014 by sreemathi.v

1 answer

$O_2$ undergoes photochemical dissociation into one normal oxygen atom and one oxygen atom, 1.967 eV more energetic than normal. The dissociation of $O_2$ into two normal atoms of oxygen requires 498 KJ$mol^{-1}$.what is the maximum wavelength effective for photochemical dissociation of $O_2$ ?

asked Feb 1, 2014 by sharmaaparna1

1 answer

$\alpha$ & $\beta\;$are +ve roots of $\;x^2-2ax+ab=0\;$ then for $\;n \in N\;$$(0 \lt b \lt a)\;S_{n}=1+2(\large\frac{b}{a})$$+3(\large\frac{b}{a})^{\normalsize 2}$$+\;...+\;n$$(\large\frac{b}{a})^{n-1}\;$ can not exceed .

asked Jan 22, 2014 by yamini.v

1 answer

$ABC$ is an isosceles triangle inscribed in a circle of radius r. If $AB=AC$ and $h$ is the altitude from $A$ to $BC$, then the triangle $ABC$ has perimeter $P=2(\sqrt{2hr-h^2})+\sqrt{2hr})$ and area $A$=_______also $\lim\limits_{h\to 0}\large\frac{A}{p^3}=$_______

asked Jan 3, 2014 by sreemathi.v

1 answer

Integrate :$\int \large\frac{e^{\Large \log (\sin x)}}{\cos x}$$dx$

asked Dec 24, 2013 by meena.p

1 answer

Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic skeleton. It is due to :

asked Dec 21, 2013 by thanvigandhi_1

0 answers

Whar are A,B and C in the following reactions ?

asked Nov 20, 2013 by thanvigandhi_1

0 answers

The formal changes of $ N_{(1)}, N_{(2)}$ and $O$ atoms in : $ \ddot{N_{(1)}} =\ddot{N_{(2)}} = \ddot {O} : $ are respectively :

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Which one of the following is an example for disproportionation reaction?

asked Oct 24, 2013 by thanvigandhi_1

1 answer

Identify $\underline A$ and $\underline B$ in the following reaction:

asked Oct 21, 2013 by meena.p

0 answers

For the first order reaction at $27^{\circ}C, $ the radio of time required for $75 \%$ completion to $25 \%$ completion of reaction is :

asked Oct 16, 2013 by meena.p

1 answer

The boiling point of a solution containing 68.4 g of sucrose ( molar mass = 34.2 g $mol^{-1}$) in 100 g of water is :

asked Oct 14, 2013 by thanvigandhi_1

1 answer

Identify $A,B$ and $C$ in the following reactions :

asked Oct 2, 2013 by meena.p

1 answer

The number of radial nodes present in the radial probability distribution curves for the orbital wave function with quantum numbers $n=4,l=0$ and $m=0$ is:

asked Sep 25, 2013 by meena.p

1 answer

The $pK_a$ values of four carboxylic acids are given below. Identify the weakest carboxylic acid.

asked Sep 19, 2013 by meena.p

1 answer

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