Maths-
General
Easy
Question
1 mole of N2O4 (g) at 300 K is kept in dosed container under 1 atm. It is heated to 600K when 20% mass of N2O4(g) decomposes to NO2(g). The resultant pressure is
- 1.2 atm
- 2.4 atm
- 2 atm
- 1 atm
The correct answer is: 2.4 atm
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If the minimum value of the expression 
can be expressed in the form 
where a, b N and are in their lowest term then the value of (a + b) equals
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Consider the lines represented parametically as
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L2 : 
Find equation of the plane P containing the line L2 and parallel to the line L1, is
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L1 :
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let l ,m,n be the D.Cs of a vector 
and a,b,c are three numbers such that a,b,c are proprotionals to l,m,n i.e, 
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is 
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has length 21 and drs 2,3,6 the dcs of when makes an obtuse angle with x-axis is
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be a vector having drs the angle between two lines whose DCs are is
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Maths-General
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is equal to
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Maths-General
Chemistry-
The removal of two atoms or groups, one generally hydrogen 
and the other a leaving group 
resulting in the formation of unsaturated compound is known as elimination reaction.
In 
(elimination) reactions, the 
bond is broken heterolytic ally (in step 1) to form a carbocation (as in 
reaction) in which 
) is lost (rate determining step). The carbocation (in step 2) loses a proton from the 
-carbon atom by a base (nucleophile) to form an alkene. reaction is favoured in compounds in which the leaving group is at secondary 
or tertiary 
position. In 
formed simultaneously. 
reactions occur in one step through a transition state.
reactions are most common in haloalkanes (particularly, 
) and better the leaving group higher is the reaction. In reactions, both the leaving groups should be antiplanar.
cb (Elimination unimolecular conjugate base) reaction involves the removal of proton by. a conjugate base (step 1) to produce carbanion which loses a leaving group to form an alkene (step 2) and is a slow step.
2-Bromobutane on heating with concentrated solution of alcoholic KOH gives major product as:
The removal of two atoms or groups, one generally hydrogen and the other a leaving group resulting in the formation of unsaturated compound is known as elimination reaction.
In (elimination) reactions, the bond is broken heterolytic ally (in step 1) to form a carbocation (as in reaction) in which ) is lost (rate determining step). The carbocation (in step 2) loses a proton from the -carbon atom by a base (nucleophile) to form an alkene. reaction is favoured in compounds in which the leaving group is at secondary or tertiary position. In formed simultaneously. reactions occur in one step through a transition state.
reactions are most common in haloalkanes (particularly, ) and better the leaving group higher is the reaction. In reactions, both the leaving groups should be antiplanar.
cb (Elimination unimolecular conjugate base) reaction involves the removal of proton by. a conjugate base (step 1) to produce carbanion which loses a leaving group to form an alkene (step 2) and is a slow step.
2-Bromobutane on heating with concentrated solution of alcoholic KOH gives major product as:
Chemistry-General
Chemistry-
The removal of two atoms or groups, one generally hydrogen and the other a leaving group resulting in the formation of unsaturated compound is known as elimination reaction.
In (elimination) reactions, the bond is broken heterolytic ally (in step 1) to form a carbocation (as in reaction) in which ) is lost (rate determining step). The carbocation (in step 2) loses a proton from the -carbon atom by a base (nucleophile) to form an alkene. reaction is favoured in compounds in which the leaving group is at secondary or tertiary position. In formed simultaneously. reactions occur in one step through a transition state.
reactions are most common in haloalkanes (particularly, ) and better the leaving group higher is the reaction. In reactions, both the leaving groups should be antiplanar.
cb (Elimination unimolecular conjugate base) reaction involves the removal of proton by. a conjugate base (step 1) to produce carbanion which loses a leaving group to form an alkene (step 2) and is a slow step.
Isopropyl chloride on heating with concentrated solution of ethanolic KOH gives mainly:
The removal of two atoms or groups, one generally hydrogen and the other a leaving group resulting in the formation of unsaturated compound is known as elimination reaction.
In (elimination) reactions, the bond is broken heterolytic ally (in step 1) to form a carbocation (as in reaction) in which ) is lost (rate determining step). The carbocation (in step 2) loses a proton from the -carbon atom by a base (nucleophile) to form an alkene. reaction is favoured in compounds in which the leaving group is at secondary or tertiary position. In formed simultaneously. reactions occur in one step through a transition state.
reactions are most common in haloalkanes (particularly, ) and better the leaving group higher is the reaction. In reactions, both the leaving groups should be antiplanar.
cb (Elimination unimolecular conjugate base) reaction involves the removal of proton by. a conjugate base (step 1) to produce carbanion which loses a leaving group to form an alkene (step 2) and is a slow step.
Isopropyl chloride on heating with concentrated solution of ethanolic KOH gives mainly:
Chemistry-General
Chemistry-
Karl Ziegler reported that alkenes react with N-bromosuccinimide (NBS) in presence of light to give products resulting from substitution of hydrogen by bromjne at the allylic position, i.e., the position next to the double bond. Let us consider the halogenation of cyclohexene.
Energy level diagram for allylic, vinylic and alkylic, free radicals is .given below:
Above compound on treatment with NBS gives allylic bromides. How many product(s) will be obtained in this reaction?
Karl Ziegler reported that alkenes react with N-bromosuccinimide (NBS) in presence of light to give products resulting from substitution of hydrogen by bromjne at the allylic position, i.e., the position next to the double bond. Let us consider the halogenation of cyclohexene.
Energy level diagram for allylic, vinylic and alkylic, free radicals is .given below:
Above compound on treatment with NBS gives allylic bromides. How many product(s) will be obtained in this reaction?
Chemistry-General
Chemistry-
Karl Ziegler reported that alkenes react with N-bromosuccinimide (NBS) in presence of light to give products resulting from substitution of hydrogen by bromjne at the allylic position, i.e., the position next to the double bond. Let us consider the halogenation of cyclohexene.
Energy level diagram for allylic, vinylic and alkylic, free radicals is .given below:
Which of the following sequences is correct about C-H bond energy?
Karl Ziegler reported that alkenes react with N-bromosuccinimide (NBS) in presence of light to give products resulting from substitution of hydrogen by bromjne at the allylic position, i.e., the position next to the double bond. Let us consider the halogenation of cyclohexene.
Energy level diagram for allylic, vinylic and alkylic, free radicals is .given below:
Which of the following sequences is correct about C-H bond energy?
Chemistry-General
