Recent questions tagged unit13

Acidic hydrogen is present in

asked Mar 21, 2014 by sreemathi.v

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The chief reaction product of reaction between n-butane and bromine at $130^{\large\circ}$ is

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Propyne and propene can be distinguished by

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$(CH_3)_3CMgCl$ on reaction with $D_2O$ produces

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During debromination of meso-dibromobutane,the major compound formed is

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The highest boiling point is expected for

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Consider the following reaction:Identify the structure of the major product X

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Benzyl chloride $(C_6H_5CH_2Cl)$ can be prepared from toluene by chlorination with

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$\begin{array}{1 1}\text{Statement-1:Addition of bromine to trans-2-butene yields meso 2,3-dibromobutane.}\\\text{Statement-2:Bromine addition to an alkene is an electrophilic addition}\end{array}$

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1-Butyne on oxidation with hot alkaline $KMnO_4$ would yield

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$B\quad\underrightarrow{\text{Lindlar catalyst}/H_2}\quad R-C\equiv C-R\quad\underrightarrow{Na/NH_3}\quad A.$ A and B are geometrical isomers $(R-CH=CH-R)$

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10ml of gaseous hydrocarbon requires 30ml of oxygen for complete combustion.The hydrocarbon is

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From the following reactions,predict which of the following orders regarding acid strength is correct? \[\begin{array}{1 1}HC\equiv CH+LiNH_2\quad\leftrightharpoons\quad NH_3+HC\equiv CLi\\NH_3+R^-\quad\leftrightharpoons \quad NH_2^-+RH\end{array}\]

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The alkene $C_6H_{10}$ producing $OHC(CH_2)_4CHO$ on ozonolysis is

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$CH_3CH=CHCH_3+CH_2N_2\rightarrow A$. A is

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When $CH_3CH_2CHCl_2$ is treated with $NaNH_2$,the product formed is

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An alkene with molecular formula $C_8H_{16}$ on oxidation with hot $KMnO_4$ gives acetone and 3-pentanone.The structure of the alkene is

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What is X in the following sequence of reactions?\[X\quad\underrightarrow{Na}\quad Y\quad\underrightarrow{NaOH/CaO}\quad CH_4\]

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The product formed when vinylacetylene is passed through concentrated hydrochloric acid in presence of cuprous and ammonium chlorides is

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Propene on hydroboration and oxidation produces

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The hydrocarbon which can react with sodium in liquid ammonia is

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Which of these will not react with acetylene?

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Chlorination of an alkane involves the attack of

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Reaction of HBr with propene in the presence of peroxide gives

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When propyne is treated with aqueous $H_2SO_4$ in presence of $HgCO_4$,the major product is

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When bromoethane is subjected to Wurtz reaction,the hydrocarbon mixture so obtained consists of

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The product of acid catalysed hydration of 2-phenylpropene is

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The reaction conditions leading to the best yields of $C_2H_5Cl$ are

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Select the major product formed from the treatment of 2-bromobutane and alcoholic KOH

asked Mar 20, 2014 by sreemathi.v

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Amongest the following compounds which can be most easily sulphonated is

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During the preparation of alkanes by Kolbe's electrolytic method using inert elecrodes,the pH of the electrolyte

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Refer the below reaction A is

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An alkane $C_7H_{16}$ is produced by the reaction of lithium di (3-pentyl) cuprate with ethyl bromide.The structural formula of the product is

asked Mar 20, 2014 by sreemathi.v

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Identify the correct order of reactivity in electrophilic substitution reaction of the following compounds:

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Ozonolysis of 2,3-dimethyl-1-butene followed by reduction with zinc and water gives

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Refer the below reaction A is

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Toluene when treated with $Br_2/Fe$ gives p-bromotoluene as the major product because $CH_3$ group

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Which one of the following has the smallest heat of hydrogenation per mole?

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Product in the below reaction is

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The major products P and Q are in the below reaction

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Refer the below reaction A Can be

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$CH_3CH_2CH_2CH_3\quad\underrightarrow {Cl_2/h\nu} \quad A+B$(Monochlorination products).The approximate ratio of percentage yields of $A$ and $B$ formed in the reaction is

asked Mar 20, 2014 by sreemathi.v

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$CH_3CH=CHCH_3+CHCl_3+t-Bu-OK\rightarrow A$.A is

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In the below reaction:A can be

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The addition of unsymmetrical reagents to unsymmetrical alkenes occurs in such a way that the negative part of the addendum goes to that carbon atom of the double bond which carries lesser number of hydrogen atoms is called by

asked Mar 20, 2014 by sreemathi.v

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Addition of HCl to 2-methyl-2-butene mainly gives

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Which of the compound with molecular formula $C_5H_{10}$ yields acetone on ozonolysis?

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Predict the product C obtained in the following reaction of 1-butyne.$CH_3CH_2-C\equiv CH+HCl\rightarrow B\quad\underrightarrow{HI}\quad C$

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Base strength of $(i)\; H_3CC^{\ominus}H_2,(ii)\;H_2C=C^{\ominus}H$ and $(iii)\;H-C\equiv C^{\ominus}$ is in the order of

asked Mar 20, 2014 by sreemathi.v

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In the following sequence of reactions,the alkene affords the compound 'B':$CH_3CH=CHCH_3\quad\underrightarrow {O_3}\quad A\quad\underrightarrow {H_2O}\quad B$.The compound B is

asked Mar 20, 2014 by sreemathi.v

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