Chemistry-
General
Easy
Question
Oxidation of alkenes by cleavage with acidic or alkaline KMn04 or acidic K2Cr2O7 at higher temperature yields products depending upon the nature of aIkene. A hot solution ofKMnO4 is a strong oxidising agent which gives only ketones and carboxylic . acids and not aldehydes (as they cannot be isolated).
Oxidation of alkenes with OsO4 followed by alcoholic NaHSO3 or Na2SO4 yields glycols.
An alkene 1,2-dimethyl cyclobutene on oxidation With. hot KMnO4 gives:
- 4-ketopentanoic acid
- 2,3-diketo cyclohexane
- hexane-2,5-dione
- ethanoic acid and butanoic acid
The correct answer is: hexane-2,5-dione
Related Questions to study
Chemistry-
Oxidation of alkenes by cleavage with acidic or alkaline KMn04 or acidic K2Cr2O7 at higher temperature yields products depending upon the nature of aIkene. A hot solution ofKMnO4 is a strong oxidising agent which gives only ketones and carboxylic . acids and not aldehydes (as they cannot be isolated).
Oxidation of alkenes with OsO4 followed by alcoholic NaHSO3 or Na2SO4 yields glycols.
An alkene 1,2-dimethyl cyclobutene on oxidation With. hot KMnO4 gives:
Oxidation of alkenes by cleavage with acidic or alkaline KMn04 or acidic K2Cr2O7 at higher temperature yields products depending upon the nature of aIkene. A hot solution ofKMnO4 is a strong oxidising agent which gives only ketones and carboxylic . acids and not aldehydes (as they cannot be isolated).
Oxidation of alkenes with OsO4 followed by alcoholic NaHSO3 or Na2SO4 yields glycols.
An alkene 1,2-dimethyl cyclobutene on oxidation With. hot KMnO4 gives:
Chemistry-General
Maths-
Out of 21 tickets marked with numbers from 1 to 21, three are drawn at random. The chance that the numbers on them are in A.P., is
Out of 21 tickets marked with numbers from 1 to 21, three are drawn at random. The chance that the numbers on them are in A.P., is
Maths-General
Maths-
Three distinct numbers are selected from first 100 natural numbers. The probability that all the three numbers are divisible by 2 and 3 is
We should know the formula for combinations. We should know the concept of probability.
Three distinct numbers are selected from first 100 natural numbers. The probability that all the three numbers are divisible by 2 and 3 is
Maths-General
We should know the formula for combinations. We should know the concept of probability.
Maths-
Suppose values taken by a variable x are such that , where denotes the value of x in the ith case for i = 1, 2, n. Then
Suppose values taken by a variable x are such that , where denotes the value of x in the ith case for i = 1, 2, n. Then
Maths-General
Chemistry-
Oxidation without cleavage of sigma bond takes place in alkenes.
Presence of unsaturation· -in alkenes is detected by using Baeyer's reagent. Alkenes decolourise pink colour of Baeyer’s. reagent. In presence of Baeyer's reagent, 'syn' addition of-OH groups takes place on both carbons· of double· bond. The net reaction can be given as,
Ozonolysis of· alkenes give ozonide, which on further hydrolysis gives aldehyde and/or ketone.
Linear polyenes on. ozonolysis gives two moles of acetaldehyde and one mole of propanedial. Linear polyene will be:
Oxidation without cleavage of sigma bond takes place in alkenes.
Presence of unsaturation· -in alkenes is detected by using Baeyer's reagent. Alkenes decolourise pink colour of Baeyer’s. reagent. In presence of Baeyer's reagent, 'syn' addition of-OH groups takes place on both carbons· of double· bond. The net reaction can be given as,
Ozonolysis of· alkenes give ozonide, which on further hydrolysis gives aldehyde and/or ketone.
Linear polyenes on. ozonolysis gives two moles of acetaldehyde and one mole of propanedial. Linear polyene will be:
Chemistry-General
Chemistry-
Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen's reaction, the. addition ·of hydrogen takes·· place in presence of Raney nickel· catalyst. Platinum and palladium can also be used as catalyst in these reactions. These are heterogeneous catalyst and used in. finely. divided state. Experimentally, it is observed that less. crowded alkenes adsorb H2 with faster rate. Controlled hydrogeneration of alkyne in presence of Lindlar's catalyst yields cis product i.e., 'cis' alkene. Thus, in presence of Lindlar's catalyst 'syn' addition takes place. The relative rate of hydrogenation follows the order:
Non-terminal alkynes an reduce4 in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product. .
The product of the following reaction is:
<img src="https://mycourses.turito.com/tokenpluginfile.php/c161933dbfaab094c54655ab71e9b8f0/1/question/questiontext/649779/1/1178377/Picture21.png" alt="" width="285" height="89"
Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen's reaction, the. addition ·of hydrogen takes·· place in presence of Raney nickel· catalyst. Platinum and palladium can also be used as catalyst in these reactions. These are heterogeneous catalyst and used in. finely. divided state. Experimentally, it is observed that less. crowded alkenes adsorb H2 with faster rate. Controlled hydrogeneration of alkyne in presence of Lindlar's catalyst yields cis product i.e., 'cis' alkene. Thus, in presence of Lindlar's catalyst 'syn' addition takes place. The relative rate of hydrogenation follows the order:
Non-terminal alkynes an reduce4 in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product. .
The product of the following reaction is:
<img src="https://mycourses.turito.com/tokenpluginfile.php/c161933dbfaab094c54655ab71e9b8f0/1/question/questiontext/649779/1/1178377/Picture21.png" alt="" width="285" height="89"
Chemistry-General
Chemistry-
Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen's reaction, the. addition ·of hydrogen takes·· place in presence of Raney nickel· catalyst. Platinum and palladium can also be used as catalyst in these reactions. These are heterogeneous catalyst and used in. finely. divided state. Experimentally, it is observed that less. crowded alkenes adsorb H2 with faster rate. Controlled hydrogeneration of alkyne in presence of Lindlar's catalyst yields cis product i.e., 'cis' alkene. Thus, in presence of Lindlar's catalyst 'syn' addition takes place. The relative rate of hydrogenation follows the order:
Non-terminal alkynes an reduce4 in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product.
In which of the following cases, the reaction is most. exothermic?
Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen's reaction, the. addition ·of hydrogen takes·· place in presence of Raney nickel· catalyst. Platinum and palladium can also be used as catalyst in these reactions. These are heterogeneous catalyst and used in. finely. divided state. Experimentally, it is observed that less. crowded alkenes adsorb H2 with faster rate. Controlled hydrogeneration of alkyne in presence of Lindlar's catalyst yields cis product i.e., 'cis' alkene. Thus, in presence of Lindlar's catalyst 'syn' addition takes place. The relative rate of hydrogenation follows the order:
Non-terminal alkynes an reduce4 in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product.
In which of the following cases, the reaction is most. exothermic?
Chemistry-General
Chemistry-
Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen's reaction, the. addition ·of hydrogen takes·· place in presence of Raney nickel· catalyst. Platinum and palladium can also be used as catalyst in these reactions. These are heterogeneous catalyst and used in. finely. divided state. Experimentally, it is observed that less. crowded alkenes adsorb H2 with faster rate. Controlled hydrogeneration of alkyne in presence of Lindlar's catalyst yields cis product i.e., 'cis' alkene. Thus, in presence of Lindlar's catalyst 'syn' addition takes place. The relative rate of hydrogenation follows the order:
Non-terminal alkynes a reduce4 in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product.
The relative rate of catalytic hydrogenation of following. alkenes are:
I)
II)
III)
IV) </span
Hydrogenation of alkenes and alkynes takes place in presence of certain catalysts. In Sabatier Senderen's reaction, the. addition ·of hydrogen takes·· place in presence of Raney nickel· catalyst. Platinum and palladium can also be used as catalyst in these reactions. These are heterogeneous catalyst and used in. finely. divided state. Experimentally, it is observed that less. crowded alkenes adsorb H2 with faster rate. Controlled hydrogeneration of alkyne in presence of Lindlar's catalyst yields cis product i.e., 'cis' alkene. Thus, in presence of Lindlar's catalyst 'syn' addition takes place. The relative rate of hydrogenation follows the order:
Non-terminal alkynes a reduce4 in presence of Na or Li metal dissolved in liquid ammonia. In this reaction, anti-addition of hydrogen results into the trans-product.
The relative rate of catalytic hydrogenation of following. alkenes are:
I)
II)
III)
IV) </span
Chemistry-General
Chemistry-
Compounds [X] and [Y] are respectively:
Compounds [X] and [Y] are respectively:
Chemistry-General
Chemistry-
Unknown Compound (A) on oxidation with hot basic. KMnO4 'gives only one compound whose structure is given below,
Compound (A) will be:
Unknown Compound (A) on oxidation with hot basic. KMnO4 'gives only one compound whose structure is given below,
Compound (A) will be:
Chemistry-General
Chemistry-
Order of reactivity of given four alkenes for hydrogenation , reaction will be:
I)
II)
III)
IV)
Order of reactivity of given four alkenes for hydrogenation , reaction will be:
I)
II)
III)
IV)
Chemistry-General
Maths-
A pie chart is to be drawn for representing the following data The value of the central angle for food and clothing would be
A pie chart is to be drawn for representing the following data The value of the central angle for food and clothing would be
Maths-General
Maths-
The following data gives the distribution of height of students The median of the distribution is
The following data gives the distribution of height of students The median of the distribution is
Maths-General
Maths-
The quartile deviation for the following data is
The quartile deviation for the following data is
Maths-General
Maths-
Section-wise expenditure of a State Govt. is shown in the given figure. The expenditure incurred on transport is
Section-wise expenditure of a State Govt. is shown in the given figure. The expenditure incurred on transport is
Maths-General