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Recent questions tagged q129

4.0g of argon has pressure P at temperature T K in a vessel . On keeping the sample at $50^{\large\circ}C$ higher temperature 0.8g gas was given out to maintain the pressure P. The original temperature was:

asked Mar 5, 2014 by sharmaaparna1

1 answer

Which of the following is least reactive in a nucleophilic substitution reaction ?

asked Mar 3, 2014 by meena.p

1 answer

Find the area of equilateral triangle inscribed in the circle $x^2+y^2+2gx+2fy+c=0$?

asked Feb 11, 2014 by sreemathi.v

1 answer

Sum of $\;\frac{1}{1.2.3.4}+\frac{1}{2.3.4.5}+\frac{1}{3.4.5.6}+\;.....\;upto\;\infty\;is$

asked Jan 21, 2014 by yamini.v

1 answer

The $\lambda$ of $H_{\alpha}$ line of Balmer series is $6500A^{\large\circ}$.What is the $\lambda$ of $H_{\beta}$ line of Balmer series?

asked Jan 17, 2014 by sreemathi.v

1 answer

$\lim\limits_{x\to 0}\large\frac{2^x-1}{\sqrt{1+x}-1}$=

asked Jan 2, 2014 by sreemathi.v

1 answer

Integrate : $\large\frac{1+ \cos 4x }{\cot x - \tan x }$$dx$

asked Dec 21, 2013 by meena.p

1 answer

The fruit is chambered, developed from inferior, ovary and has seeds with succulent testa in :

asked Dec 20, 2013 by thanvigandhi_1

0 answers

What is the volume of $ 0.1\: M \: H_2SO_4$ required in litres to neutralize completely 1 litre of a solution containing 20 g of $NaOH$ ?

asked Nov 20, 2013 by thanvigandhi_1

0 answers

Which one of the following statement is not correct?

asked Nov 5, 2013 by thanvigandhi_1

1 answer

What is the correct Fischer projection of (R) 2-hydroxy propanoic acid?

asked Oct 21, 2013 by thanvigandhi_1

1 answer

When 25 grams of a non-volatile solute is dissolved in 100 grams of water, the vapour pressure is lowered by $2.25 \times 10^{-1}\;mm$ If the vapour pressure of water at $20^{\circ}$ is 17.5\;mm$ What is the molecular weight of the solute?

asked Oct 21, 2013 by meena.p

1 answer

The correct Fischer projection formula of (2R, 3R)-2, 3-dihydroxy butanoic acid is

asked Oct 15, 2013 by thanvigandhi_1

1 answer

The chemical entities present in thermosphere of the atmosphere:

asked Oct 15, 2013 by meena.p

1 answer

X is a non-volatile solute and Y is a volatile solvent. The following vapour pressures are observed by dissolving X and Y :

asked Oct 1, 2013 by meena.p

1 answer

At $T(k),$ the partial pressures of $SO_2,O_2$ and $SO_3$ are $0.662,0.100$ and $0.331$ atm. respectively for the reaction $ 2 S0_2+O_2 \to 2 SO_3$ at equilibrium . What is the partial pressure in atm. of $O_2$ when the equilibrium partial pressures of $SO_2$ and $SO_3$ are equal at the same temperature?

asked Sep 25, 2013 by meena.p

1 answer

The vapour pressure in mm of $Hg,$ of an aqueous solution obtained by adding 18 g of glucose $(C_6H_{12}O_6)$ to $180\;g$ of water at $100^{\circ}$ is :

asked Sep 18, 2013 by meena.p

1 answer

$X$ is a discrete random variable which takes the values $0, 1, 2 $ and $P(X=0)=\large\frac{144}{169},$$ P(X=1)=\large\frac{1}{169}$ then the value of $P(X=2)$ is

asked May 28, 2013 by poojasapani_1

1 answer

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