Recent questions in Chemistry

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

asked Mar 21, 2014 by sreemathi.v

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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 number of moles of $KMnO_4$ that will be needed to react completely with one mole of ferrous oxalate in acidic solution is

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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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$2.76\;g$ of silver carbonate on being strongly heated yields a residue weighing.

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Which has the maximum number of atoms?

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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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Given that the abundance of isotopes $^{54}Fe, ^{56}Fe$ and $^{56}Fe$ are $5 \%, 90 \%$ and $5 \%$ respectively, the atomic mass of $Fe$ is

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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 largest number of molecules is in

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The product of acid catalysed hydration of 2-phenylpropene is

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An aqueous solution of $6.3\;g$ oxalic acid dihydrate is made up to $250\;ml$ . The volume of $0.1\;N\; NaOH$ required to completely neutralize 10 ml of this solution is

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

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The normality of $0.3\;M$ phosphorous acid $(H_3P0_3) $ is

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When the same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide evolved is

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The total number of electrons in one molecule of carbon dioxide is

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The equivalent weight of $ MnSO_4$ is half its molecular weight when it is converted to

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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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A molal solution is one that contains one mole of a solute in

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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

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Magnetic oxide of iron is

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For highly reactive metals like alkali and alkaline earth metals, only way of reduction is

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

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The salt which is likely to be found in plant is

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The ore having two different metal atoms is

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The Impurities present in bauxite are

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

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The collectors like pine oil xanthates and fatty acids are used during froth-flotation process of concentration of ores to

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The gemstone ruby is an impure form of alumina having impurity

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Refer the below reaction A is

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In the electrolysis of brine for the production of chlorine , the by products are

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The Ellingham diagram are constructed for the formation of oxides of elements and they can predict.

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Small pipes, called tuyeres, are kept at the sides of blast furnace from where

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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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In Ellingham diagram, a straight line is obtained except

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

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The process that is not carried out while doing the concentration of an ore is

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The blast furnace used for smelting is provided with double cup and cone arrangement to

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Van arkel method is generally used for

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Zone Refining is based on process of

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The gemstone Saphire is an impure form of alumina having impurity of

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The pulverization of ores is done during

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