Chemistry-
General
Easy
Question
Write the total number of benzenoid structural isomers of molecular formula C8H8O,which can give Fehling test.
- 2
- 3
- 4
- 1
The correct answer is: 1
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Order of enolic content
Order of enolic content
chemistry-General
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The element(s) of symmetry present in the following molecule is/are:
I) Alternating axisofsymmetry
II) Plane ofsymmetry
III) Axisofsymmetry
IV)Centreofsymmetry
The element(s) of symmetry present in the following molecule is/are:
I) Alternating axisofsymmetry
II) Plane ofsymmetry
III) Axisofsymmetry
IV)Centreofsymmetry
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The binaphthol (Bnp) is:
The binaphthol (Bnp) is:
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Determinetheabsoluteconfigurationsofthechiralcentresinthefollowingcompound.
Determinetheabsoluteconfigurationsofthechiralcentresinthefollowingcompound.
chemistry-General
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Sum of total number of chiral centres(x) and total number of pairs of enantiomers(y) for following structure is:
Sum of total number of chiral centres(x) and total number of pairs of enantiomers(y) for following structure is:
chemistry-General
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The mineral colemanite is fused with sodium carbonate, compound(Z) is obtained along with white ppt. When(Z) reacts with dil.H2SO4 gives a compound (a) which on strong heating gives an oxide(C).(c) on reduction with Mg produced(d) and nonmetal(X). Treatment of chlorineonamixtureof(c) and carbon at high temperature gives a halide(E) which is fuming liquid(b.pt.13°C) along with a gas(F).(E) is a Lew is acid. (E) and (F) will be:
The mineral colemanite is fused with sodium carbonate, compound(Z) is obtained along with white ppt. When(Z) reacts with dil.H2SO4 gives a compound (a) which on strong heating gives an oxide(C).(c) on reduction with Mg produced(d) and nonmetal(X). Treatment of chlorineonamixtureof(c) and carbon at high temperature gives a halide(E) which is fuming liquid(b.pt.13°C) along with a gas(F).(E) is a Lew is acid. (E) and (F) will be:
chemistry-General
chemistry-
The mineral colemanite is fused with sodium carbonate, compound(Z) is obtained along with white ppt. When(Z)reactswithdil.H2SO4 gives a compound(a) which on strong heating gives an oxide(C).(c) on reduction with Mg produced(d) and nonmetal(X).Treatment of chlorine on a mixture of(c) and carbon at high temperature gives a halide(E) which is fuming liquid(b.pt.13°C) along with a gas(F).(E)is a Lew is acid. (Z) may be:
The mineral colemanite is fused with sodium carbonate, compound(Z) is obtained along with white ppt. When(Z)reactswithdil.H2SO4 gives a compound(a) which on strong heating gives an oxide(C).(c) on reduction with Mg produced(d) and nonmetal(X).Treatment of chlorine on a mixture of(c) and carbon at high temperature gives a halide(E) which is fuming liquid(b.pt.13°C) along with a gas(F).(E)is a Lew is acid. (Z) may be:
chemistry-General
chemistry-
Areactionisspontaneousiffreeenergychange,
,forthereactionisnegative.Thequestionarises,how wecanexplainthespontaneityofreversiblereactions.Letustaketheexampleofdissociationequilibriumof 
ThevariationoffreeenergywiththefractionofN2O4dissociatedunderstandardconditions is shown in the figure below:
Thestandardfreeenergychangefortheconversionof1moleofN2O4into2molesofNO2is:
Areactionisspontaneousiffreeenergychange,,forthereactionisnegative.Thequestionarises,how wecanexplainthespontaneityofreversiblereactions.Letustaketheexampleofdissociationequilibriumof ThevariationoffreeenergywiththefractionofN2O4dissociatedunderstandardconditions is shown in the figure below:
Thestandardfreeenergychangefortheconversionof1moleofN2O4into2molesofNO2is:
chemistry-General
chemistry-
Consider the process carried out for an ideal gas.
One by one, stoppers S1, S2, S3............ are removed slowly and the gas expands to V2, L with final pressure P2and final temperature T2. Which of the following is/are correct for the above process.
Consider the process carried out for an ideal gas.
One by one, stoppers S1, S2, S3............ are removed slowly and the gas expands to V2, L with final pressure P2and final temperature T2. Which of the following is/are correct for the above process.
chemistry-General
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Theaboveisothermwasobservedforamonoatomicgasatcertaintemperature. Which of the following is correct?
Theaboveisothermwasobservedforamonoatomicgasatcertaintemperature. Which of the following is correct?
chemistry-General
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ForthefollowingV-TplotforagasundergoingaprocessfromstateAtostateB,selectthecorrectalternative(s).
ForthefollowingV-TplotforagasundergoingaprocessfromstateAtostateB,selectthecorrectalternative(s).
chemistry-General
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Electronegativity is a feature which is relative and depends on several factor like oxidation number, hybridizations etc.
For instance, the electronegativity of differently hybridized carbon are :
ThedirectionofdipoleofC→0 is This means there is slight positive charge on O. This can be explained by:
Electronegativity is a feature which is relative and depends on several factor like oxidation number, hybridizations etc.
For instance, the electronegativity of differently hybridized carbon are :
ThedirectionofdipoleofC→0 is This means there is slight positive charge on O. This can be explained by:
chemistry-General
chemistry-
Electronegativity is a feature which is relative and depends on several factor like oxidation number, hybridizations etc.
For instance, the electronegativity of differently hybridized carbon are :
Which of the following is correct?
A) H3C-CH3
B) H2C =CH2
C) HC =CH
Electronegativity is a feature which is relative and depends on several factor like oxidation number, hybridizations etc.
For instance, the electronegativity of differently hybridized carbon are :
Which of the following is correct?
A) H3C-CH3
B) H2C =CH2
C) HC =CH
chemistry-General
chemistry-
Electronegativity is a feature which is relative and depends on several factor like oxidation number, hybridizations etc.
For instance, the electronegativity of differently hybridized carbon are :
Which of the following contain all carbon of equal electronegativity?
Electronegativity is a feature which is relative and depends on several factor like oxidation number, hybridizations etc.
For instance, the electronegativity of differently hybridized carbon are :
Which of the following contain all carbon of equal electronegativity?
chemistry-General
chemistry-
Sulphurformsnumerouscompoundsandshowvarietyofoxidationstates.Italsoexhibitagoodtendencyof catenation.Itformsvarietyofoxoacidsandoxoanionsalso.Sulphuralsooccurinseveralbiomoleculesand is also used in chemotherapy as sulpha drugs. Sulphapyridine was shown to be effective against pneumonia
What is the hybridization of S in this compound.
Sulphurformsnumerouscompoundsandshowvarietyofoxidationstates.Italsoexhibitagoodtendencyof catenation.Itformsvarietyofoxoacidsandoxoanionsalso.Sulphuralsooccurinseveralbiomoleculesand is also used in chemotherapy as sulpha drugs. Sulphapyridine was shown to be effective against pneumonia
What is the hybridization of S in this compound.
chemistry-General
