Recent questions tagged class11

The bond order and magnetic behaviour of $He_2^{2+}$ are respectively

asked Mar 6, 2014 by sreemathi.v

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Which of the following molecule has the highest dipole moment

asked Mar 6, 2014 by sreemathi.v

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Consider the following organic compound. To make it a chiral compound. The attack should be on which carbon?

asked Mar 5, 2014 by meena.p

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Total number of isomers of $C_4H_{10}O$ will be

asked Mar 5, 2014 by meena.p

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The total number of isomers for $C_4H_8$ is

asked Mar 5, 2014 by meena.p

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The volume occupied by 1 mole of gas at 1 bar pressure and 273.15K is.....

asked Mar 5, 2014 by sharmaaparna1

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The two isomers given below are :

asked Mar 5, 2014 by meena.p

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A 2.24 litre cylinder containing $O_2$ gas at $27^{\large\circ}C$ and 2 atm is found to develop a leakage was repaired , the pressure dropped to 100cm of Hg at $27^{\large\circ}C$ . The number of moles of gas escaped out during leakage is :

asked Mar 5, 2014 by sharmaaparna1

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Structures , $CH_3COCH_3$ and $CH_2 =CH (OH) CH_3$ represent

asked Mar 5, 2014 by meena.p

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The number of enantiomers of the compound $CH_3CHBrCHBrCOOH$ is

asked Mar 5, 2014 by meena.p

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Which of the following will have a meso- isomer also ?

asked Mar 5, 2014 by meena.p

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The number of $\sigma$ and $\pi$ bonds in $1,3$-butadiene

asked Mar 5, 2014 by sreemathi.v

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which among the following is likely to show geometrical isomerism ?

asked Mar 5, 2014 by meena.p

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The maximum $'S'$ character is in

asked Mar 5, 2014 by sreemathi.v

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The sum of two numbers is $6$ times their geometric mean.Show that the ratio of the numbers is $3+2\sqrt 2\::\:3-2\sqrt 2$

asked Mar 5, 2014 by rvidyagovindarajan_1

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The hybridisation of Sn in $SnCl_6^{2-}$ is

asked Mar 5, 2014 by sreemathi.v

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Most stable carbanion is

asked Mar 5, 2014 by meena.p

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The arrangement of $(CH_3)_3C-,(cH_3)_2CH-,CH_3CH_2-$ when attached to benzene or an unsaturated group, in increasing order of inductive effect is

asked Mar 5, 2014 by meena.p

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Lewis Octet rule was failed ,to explain the following structure of molecule

asked Mar 5, 2014 by sreemathi.v

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Which of the following compounds is not chiral ?

asked Mar 5, 2014 by meena.p

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The number of outer electron in $N_3^-$ are

asked Mar 5, 2014 by sreemathi.v

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In triplet carbenes, the two electrons

asked Mar 5, 2014 by meena.p

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The hybridisation of central 'O' atom in $O_3$ molecule is

asked Mar 5, 2014 by sreemathi.v

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The number of $\sigma$-bonds and $\pi$-bonds in $XeO_4$ are

asked Mar 5, 2014 by sreemathi.v

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Acetaldehyde is the rearranged product of

asked Mar 5, 2014 by meena.p

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Which one of the following statement is correct for $CsBr_3$?

asked Mar 5, 2014 by sreemathi.v

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The following is the percentage composition of a compound. $Na = 16.08 \%, C = 4.19 \%, O = 16.78 \%$ and $H_2O = 62.95 \%$ . Its molecular formula is

asked Mar 5, 2014 by meena.p

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The square pyramidal molecular shape is adopted by

asked Mar 5, 2014 by sreemathi.v

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Which one of the following is the least stable compound?

asked Mar 5, 2014 by sreemathi.v

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An organic compound contains $C=40 \%,O=53.34\%$ and $H-6.60 \%$ . The empirical formula of the compound is :

asked Mar 5, 2014 by meena.p

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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 :

asked Mar 5, 2014 by sreemathi.v

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

asked Mar 5, 2014 by meena.p

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

asked Mar 5, 2014 by sreemathi.v

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

asked Mar 5, 2014 by sreemathi.v

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

asked Mar 5, 2014 by sreemathi.v

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

asked Mar 5, 2014 by sreemathi.v

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

asked Mar 5, 2014 by meena.p

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$PCl_5$ in solid state splits into :

asked Mar 5, 2014 by sreemathi.v

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

asked Mar 5, 2014 by meena.p

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The geometry of $H_2S$ and its dipole moment are

asked Mar 5, 2014 by sreemathi.v

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The IUPAC name of the below compound is :

asked Mar 5, 2014 by meena.p

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

asked Mar 5, 2014 by sreemathi.v

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The IUPAC name of the following compound is :

asked Mar 5, 2014 by meena.p

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Buckminsterfullerene is :

asked Mar 5, 2014 by sreemathi.v

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

asked Mar 5, 2014 by sreemathi.v

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Which of the following is not true for resonance :

asked Mar 5, 2014 by sreemathi.v

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The IUPAC name of the following compound is :

asked Mar 5, 2014 by meena.p

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Which of the following group shows pseudo inert gas configuration

asked Mar 5, 2014 by sreemathi.v

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Which of the following is the correct order of lattice energy

asked Mar 5, 2014 by sreemathi.v

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