Recent questions in Chemistry

Which one of the following is the smallest in size?

asked Mar 5, 2014 by sreemathi.v

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The number of nodal planes in $d_{xy}$ orbital is :

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$CH_3 -CHCl -CH_2-CH_3$ has a chiral centre. which one of the following represents its R- configuration?

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The number of nodal planes in a $'p_y'$ orbital is

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Which of the following will have the molecular shape that is trigonal bipyramidal?

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Of the following molecules the only one which is not an exception to the octet rule is :

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In which of the following compounds do the bonds have the largest percentage of ionic character?

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Refer the below diagram : It has chiral centre (*). It is

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$PCl_5$ in solid state splits into :

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The IUPAC name of $CH_3COCH(CH_3)_2$ is

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The geometry of $H_2S$ and its dipole moment are

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The IUPAC name of the below compound is :

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Every $H_2O$ molecule is surrounded by .............$H_2O$ molecules:

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The IUPAC name of the following compound is :

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Buckminsterfullerene is :

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Pick out among the following species not isoelectronic with $CO_2:$

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Which of the following is not true for resonance :

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The IUPAC name of the following compound is :

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Which of the following group shows pseudo inert gas configuration

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Which of the following is the correct order of lattice energy

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Which of the following is correct order for the stability of the divalent cations

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Hydrogenation of the below compound in the presence of poisoned palladium catalyst gives,

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Which of the following is a polar solvent

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Bond order is directly proportional to

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Which of the following compound has wrong IUPAC name ?

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The number of lone pairs in $XeF_2$

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A flask containing 12g of a gas of relative molecular mass 120 at a pressure of 100 atm , was evacuated by means of a pump untill the pressure was 0.01 atm at the same T. Which of the following is the best estimate of the number of molecules left in the flask. $(N_0 = 6\times10^{23} mol^{-1}$)

asked Mar 5, 2014 by sharmaaparna1

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If $V_0$ is the volume of the given mass of a gas at 273K and pressure P , then according to Charles's law the volume of same mass of gas at $10^{\large\circ}C$ and pressure P will be

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The geometry and bond angles of $IF_7$ respectively

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A quantity of hydrogen gas occupies a volume of 30.0mL at a certain temperature and pressure. What volume of half of this mass of hydrogen occupy at triple the absolute temperature if the pressure were one-ninth the original gas?

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The hybridisation of $XeOF_4$ molecule is

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Two separate bulbs contain gas A and gas B. The density of gas A is twice as that of B. The molecular mass of A is $\large\frac{1}{2}$ as that of B. If temperature is constant, the ratio of the pressure of A and B is :

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The hybridisation and geometry of $SO_4^{2-}$ respectively

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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:

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The carbon- carbon length in benzene is :

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The shape of the $NO_3^-$ ion is

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Which of the following has zero dipole moment ?

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The value of universal gas constant R depends on..

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Which of the following is the correct order of bond angle

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Increasing order of basic nature of $NH_3(I), CH_3NH_2(II) $ and -NH_2(III)( $ is

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One mole of an ideal monoatomic gas is mixed with 1 mole of an ideal diatomic gas. The molar specific heat of the mixture at constant volume is.

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The non-polar molecule is

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The most stable free radical among the following is

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Meso-Tartaric acid is optically inactive due to the presence of

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If one mole of a monoatomic gas ($\gamma = \large\frac{5}{3}$) is mixed with one mole of a diatomic gas ($\gamma = \large\frac{7}{5}$) . The value of V for the mixture is :

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If $'a'$ is the bond moment and $\theta$ is the bond angle between two bonds then the dipolemoment $\mu$ is given by

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In Lassaigne's test for nitrogen , the blue colour is due to the formation of

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$CO_2$ is isostructural with

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The molecule that does not possess a permanent dipole moment is

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The number of $\sigma$ and $\pi$ bonds are in $CO_2$ molecules

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