Recent questions in Chemistry

Which of the following have asymmetric carbon atom ?

asked Feb 22, 2014 by meena.p

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The order of reactivitiesof the following alkyl halides for a $Sn^2$ reaction is

asked Feb 22, 2014 by meena.p

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The compound which is not isomeric with diethyl ether is

asked Feb 22, 2014 by meena.p

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Which of the following compounds will exhibit cis-trans (geometrical ) isomerism ?

asked Feb 22, 2014 by meena.p

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Out of the following compounds , which will be have a zero dipole moment.

asked Feb 22, 2014 by meena.p

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Identify the correct order of reactivity in electrophilic substitution action of the following compounds.

asked Feb 22, 2014 by meena.p

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The bond between carbon atom (1) and carbon atom (2) in compound $N \equiv C_{(1)} -CH_{(2)}H \equiv CH_2$ involves the hybrid as

asked Feb 22, 2014 by meena.p

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The $Cl-C-Cl$ angle in $1,1,2,2$- tetracholoroethene and tetrachloromethane respectively will be about

asked Feb 22, 2014 by meena.p

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The correct stability order of te following resonance structures is $ I:H_2C= N^+=\bar{N} ; \quad II:H_2C^+ - N=\bar{N} \quad ; III:H_2C - N^+=\bar{N} \quad ; IV:H_2 \bar{C}- N=N^+$

asked Feb 22, 2014 by meena.p

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What is the decreasing order of strength of the bases $OH^-,NH_2^-,H-C \equiv C^- $ and $CH_3 ^{-}CH_2^-$?

asked Feb 22, 2014 by meena.p

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An $SN^2$ reaction at an asymmetric carbon a compound always gives,

asked Feb 22, 2014 by meena.p

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In the following groups : $I\; - OAc ; \;\; II \; -OMe ; \; III \;-OSO_2 Me\; ; (IV) \; -OSO_2 CF_3$ the order of leaving groups ability is

asked Feb 21, 2014 by meena.p

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Allyl isocynide has

asked Feb 21, 2014 by meena.p

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Which of the following hydrocarbons has the lowest dipole moment?

asked Feb 21, 2014 by meena.p

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The reactant that lead to products (A) and (B) on ozonolysis are

asked Feb 21, 2014 by sreemathi.v

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The products of combustion of an aliphatic thiol (RSH) at 298 k are

asked Feb 21, 2014 by meena.p

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Predict the product in the following reaction:

asked Feb 21, 2014 by sreemathi.v

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The hybridisation of carbon atoms in $C-C$ single bond of $HC \equiv C-CH = CH_2$ is

asked Feb 21, 2014 by meena.p

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The number of sigma and pi-bonds in 1-butene -3-yne are

asked Feb 21, 2014 by meena.p

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The optically active tartaric acid named as $D-(+)-$ tartaric acid because it has a positive,

asked Feb 21, 2014 by meena.p

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Predict the product in the following reaction:

asked Feb 21, 2014 by sreemathi.v

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Which of the following statements is correct?

asked Feb 21, 2014 by sreemathi.v

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Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

asked Feb 21, 2014 by meena.p

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The structure shows:

asked Feb 21, 2014 by meena.p

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The IUPAC name of $C_6H_5COCl$ is

asked Feb 21, 2014 by meena.p

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Which is a product X of reaction?

asked Feb 21, 2014 by sreemathi.v

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The IUPAC name of the following compound

asked Feb 21, 2014 by meena.p

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In the below reaction,the product X is

asked Feb 21, 2014 by sreemathi.v

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Which is a product X of reaction?

asked Feb 21, 2014 by sreemathi.v

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In the below reaction the product P is

asked Feb 21, 2014 by sreemathi.v

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Calculate the average volume available to a molecule in a sample of nitrogen gas at STP. What is the average distance between neighbouring molecules if nitrogen molecules are spherical in nature?

asked Feb 21, 2014 by sharmaaparna1

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The average speed of an ideal gas molecule at $27^{\large\circ}C$ is 0.3 m/s. Calculate the average speed at $927^{\large\circ}C$

asked Feb 21, 2014 by sharmaaparna1

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Consider the following reaction number of stereo isomers formed in this reaction is

asked Feb 21, 2014 by sreemathi.v

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A vertical hollow cylinder of height 1.52m is fitted with a movable piston of negligible mass and thickness. The lower half of the cylinder contains an ideal gas and the upper half is filled with mercury. The cylinder is initially at 300K. When the temperature is raised half of the mercury comes out of the cylinder . Find the temperature assuming the thermal expansion of mercury to be negligible.

asked Feb 21, 2014 by sharmaaparna1

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The appropriate reagents for the following transformation:

asked Feb 21, 2014 by sreemathi.v

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Statement - 1: Phenol is more reactive than benzene towards elecrophilic substitution reaction . Statement - 2: In the case of phenol, the intermediate carbocation is more resonance stabilized.

asked Feb 21, 2014 by meena.p

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In the below reaction what is A?

asked Feb 21, 2014 by sreemathi.v

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Statement 1: Molecules that are not super imposable on their mirror images are chiral. Statement -2 : All chiral molecules have chiral centres.

asked Feb 21, 2014 by meena.p

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Statement - 1: Aryl halides undergo nucleophilic substitution with ease. Statement - 2: The carbon - halogen bond in aryl halides has partial double bond character.

asked Feb 21, 2014 by meena.p

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Most stable carbonium ion is

asked Feb 21, 2014 by meena.p

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Which of the following compounds form two isomeric oximes on reacting with $NH_2OH$

asked Feb 21, 2014 by sreemathi.v

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Among the following compounds, the strongest acid is

asked Feb 21, 2014 by meena.p

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What is the major organic product obtained from the following reaction?

asked Feb 21, 2014 by sreemathi.v

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In the below reaction the product of A is

asked Feb 21, 2014 by sreemathi.v

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What is the product of the following series of reactions?

asked Feb 21, 2014 by sreemathi.v

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Which of the following acids has the smallest dissociation constant

asked Feb 21, 2014 by meena.p

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The number of stereoisomers obtained by bromiantion of trans-2-butene is

asked Feb 21, 2014 by meena.p

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Hyper conjugation involves overlap of the following orbitals

asked Feb 21, 2014 by meena.p

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Isomers which are mirror images are known as __

asked Feb 21, 2014 by meena.p

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An aromatic molecule will

asked Feb 21, 2014 by meena.p

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