Maths-
General
Easy
Question
The number of positive integers satisfying the inequality 
is
- 9
- 8
- 7
- 6
The correct answer is: 7
Given, n+1Cn-2-n+1C n-1
For 
, it satisfy to the above inequality
But 
it does not satisfy the above inequality
Related Questions to study
maths-
equals to
equals to
maths-General
chemistry-
The electric field in a region is given by
The ratio of flux of reported field through the rectangular surface of area 0.2 m2 (parallel to y-z plane) to that of the surface of area 0.3 m2 (parallel to x-z plane) is a: b, where a = ________
The electric field in a region is given by The ratio of flux of reported field through the rectangular surface of area 0.2 m2 (parallel to y-z plane) to that of the surface of area 0.3 m2 (parallel to x-z plane) is a: b, where a = ________
chemistry-General
chemistry-
Dipole moment of above compound will be
Dipole moment of above compound will be
chemistry-General
chemistry-
Write the total number of benzenoid structural isomers of molecular formula C8H8O,which can give Fehling test.
Write the total number of benzenoid structural isomers of molecular formula C8H8O,which can give Fehling test.
chemistry-General
chemistry-
Order of enolic content
Order of enolic content
chemistry-General
chemistry-
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
chemistry-General
chemistry-
The binaphthol (Bnp) is:
The binaphthol (Bnp) is:
chemistry-General
chemistry-
Determinetheabsoluteconfigurationsofthechiralcentresinthefollowingcompound.
Determinetheabsoluteconfigurationsofthechiralcentresinthefollowingcompound.
chemistry-General
chemistry-
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
chemistry-
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
chemistry-
Theaboveisothermwasobservedforamonoatomicgasatcertaintemperature. Which of the following is correct?
Theaboveisothermwasobservedforamonoatomicgasatcertaintemperature. Which of the following is correct?
chemistry-General
chemistry-
ForthefollowingV-TplotforagasundergoingaprocessfromstateAtostateB,selectthecorrectalternative(s).
ForthefollowingV-TplotforagasundergoingaprocessfromstateAtostateB,selectthecorrectalternative(s).
chemistry-General
