Recent questions in Chemistry

What would be the products in the following reaction:

asked Mar 3, 2014 by sreemathi.v

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One among the following pairs of compounds is not isomers:

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Refer the below diagram :

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What would be the reagents for below reaction?

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The major product formed in the reaction given below is

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The formation of cyanohydrin from a ketone is an example of

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2 answers

Optical isomerism arises from the presence of

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What could be the product for the following reaction?

asked Mar 3, 2014 by sreemathi.v

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How many optical isomers are possible for the compound abdc - cabd?

asked Mar 3, 2014 by meena.p

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Which of the following correctly represents the $+I$ effect of the substituents :

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A chemist has treated P-chloroaniline with acetic anhydride and wants to separate the amine product from any unreacted amine which reagent used for separation based on the basicities of the two compounds.

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In the following compounds the order of basicity is

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The joule - Thomson coefficient for a gas is zero at

asked Mar 3, 2014 by sharmaaparna1

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What is the pressure of 2 mole of ammonia at $27^{\large\circ}C$ when its volume is 5 litre according to Van der Waal's equation? (a = 4.17 b = 0.03711)

asked Mar 3, 2014 by sharmaaparna1

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Inductive effect involves

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A tertiary amine can be separated from a mixture of primary and tertiary amine using

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A gas obeys the equation of state P(V-b) = RT (The parameter b is a constant). The slope for an isochore will be

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When the below one is heated with 1 equivalent of $CH_3NH_2$ then the product is

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At low pressure Van der Waal's equation is reduced to $[P+\large\frac{a}{V^2}]V = RT$ The compressibility factor can be given as

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Refer the below is expected to be

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At high temperature and low pressure , the Van der Waal's equation is reduced to

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In Hofmann degradation of amide Me the important step is the migration of

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At low pressure , the Van der Waal's equation is written as

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Which of the following is true regarding basic character of pyridine and pyrrole?

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Under critical conditions , the compressibility factor for a gas is

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Which of the following statements is correct?

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If $U_{rms} is\; 30 R^{\large\frac{1}{2}}\; at \;27^{\large\circ}$ then the molar mass of the gas in kg is

asked Mar 3, 2014 by sharmaaparna1

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The major product obtained on heating of below is

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In the reaction : $ CH_3CHO +HCN \longrightarrow CH_3CH(OH)CN$ a chiral centre is produced . This product would be :

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The correct order of basicity of below is

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Which of statement is correct regarding the basicity of the following two primary amines?

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Which one of the following does not have $SP^2$ hybridized carbon ?

asked Mar 3, 2014 by meena.p

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Which of the following is most stable

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In the below reaction

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A compound with empirical formula $CH_2O$ has a vapour density of 30. Its molecular formula is

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What would be the major product of the following reaction

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Which of the following statement is correct?(Here $R=CH_3$)

asked Mar 3, 2014 by sreemathi.v

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

asked Mar 3, 2014 by meena.p

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$CH_3Br +Nu^{-} \longrightarrow CH_3 -Nu +Br^{-} $ The decreasing order of the rate of the above reaction with nucleophiles $(NU)$ A to D is $[Nu^{-}=\quad (A)\; Pho^{-},\;(B)\;AcO^- ,\; (C)\; HO^{-},\; (D)\;CH_3O^{-}]$

asked Mar 3, 2014 by meena.p

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Which of the following compounds does not show lassaigne's test for nitrogen ?

asked Mar 3, 2014 by meena.p

2 answers

The enolic form of acetone contains

asked Mar 3, 2014 by meena.p

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For which of the following parameters the structural isomers $C_2H_5OH$ and $CH_3OCH_3$ would be expected to have the same values ? (Assume ideal behaviour )

asked Mar 3, 2014 by meena.p

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If the absolute temperature of a sample in a fixed volume container is quadrupled then the root mean square speed in the initial state $u_i$ and that in the final stage $u_f$ would be related as:

asked Mar 2, 2014 by sharmaaparna1

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The rms velocity can be calculated by

asked Mar 2, 2014 by sharmaaparna1

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At room temperature , the rms speed of molecules of a certain diatomic gas is formed to be 1930 m/Sec . The gas is

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Four particles have speed 2,3,4 and 5 cm/sec respectively. Their RMS speed is

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Average velocity of the molecules of a gas in a container moving in one dimension is

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If P is the pressure of gas, then the kinetic energy per unit volume of the gas is

asked Mar 2, 2014 by sharmaaparna1

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Densities of air in chandigarh was found to be $1.156kgm^{-3}$. The temperature and pressure were recorded as $20^{\large\circ}C$ and $100.142\; KPa$. The average molecular mass of the air at that place in $g \;mol^{-1}$ is

asked Mar 2, 2014 by sharmaaparna1

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Assume the centre of sun to consists of gases whose average molecular mass is $2.0\;u$. The density and the pressure of the gas are respectively, $1.3g\;cm^{-3} and\; 1.12\times10^9$ atm. What is the approximate temperature of the Sun?

asked Mar 1, 2014 by sharmaaparna1

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