232262
For which molecules among the following the resultant dipole moment $(\mu) \neq 0$ ?
1 (iii) \& (iv) only
2 (i) \& (ii) only
3 (ii) \& (iii) only
4 (iv) only
Explanation:
If the direction of bond polarity is in opposite side then the resultant dipole moment will be zero i.e. $(\mu=0)$ but in the case of same direction of bond polarity the resultant dipole moment will not be equal to zero i.e. $(\mu \neq 0)$ Hence (iii) and (iv) have $(\mu \neq 0)$.
AP EAMCET 19-08-2021 Shift-I
GENERAL ORGANIC CHEMISTRY
232263
Assertion: In trans-pent-2-ene, net dipole moment is non zero. Reason: The dipole moment of $\mathrm{C}-\mathrm{CH}_{3}$ and $\mathrm{C}-$ $\mathrm{CH}_{2} \mathrm{CH}_{3}$ bonds are not equal.
1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
(A): In Trans 2-butene the dipole moment of two $\mathrm{C}-\mathrm{CH}_{3}$ bonds are equal \& opposite which is cancel out each other so we can say that trans-2-butene is nonpolor. However in trans-2- pentene the dipole moment of $\mathrm{C}-\mathrm{CH}_{3}$ bond and $\mathrm{C}-\mathrm{CH}_{2}-\mathrm{CH}_{3}$ bond are unequal although it occur dipole each other but not cancel out. Hence we can say that trans-pent-2-ene has some finite dipole moment Both the Assertion and Reason are correct and reason is correct explanation of Assertion.
AIIMS 26 May 2019 (Morning)
GENERAL ORGANIC CHEMISTRY
232267
The increasing dipole moments of the following compounds is
1 I $<$ III $<$ IV $<$ II
2 II $=$ IV $<$ III $<$ I
3 II $=$ I $<$ IV $<$ III
4 III $<$ I $<$ II $<$ IV
Explanation:
Exp : (D) : $\mu=\text { charge } \times \text { distance }$ In compound II \& IV has dipole moment zero due to equal $\mathrm{C}-\mathrm{Cl}$ bond in II \& IV hence these are non-polar. The dipole moment of o-p chlorobenzene has lower than the o-o chlorobenzene because in o-pchlorobenzene one $\mathrm{C}-\mathrm{Cl}$ bond is cancle out and one-C-- $\mathrm{Cl}$ bond has some dipole moment because it has $\alpha=60^{\circ}$ while in case of both $\mathrm{C}-\mathrm{Cl}$ bond has $\alpha=60^{\circ}$. So it has highest bond angle than other molecule. Therefore increasing order of bond angle is given as II $=$ IV $<$ III $<$ I.
BCECE-2015
GENERAL ORGANIC CHEMISTRY
232268
Among the following the molecule of highest dipole moment is
1 $\mathrm{CCl}_{4}$
2 $\mathrm{NH}_{3}$
3 $\mathrm{H}_{2} \mathrm{O}$
4 $\mathrm{CHCl}_{3}$
5 $\mathrm{BF}_{3}$
Explanation:
(C): Dipole moments occur when there is a separation of charge. The compound $\mathrm{H}_{2} \mathrm{O}$ has highest molecule than other because in other molecule metalmetal bond are equal. In these molecule has dipole moment zero because dipoles of the bond cancle each other. In $\mathrm{CHCl}_{3} \& \mathrm{H}_{2} \mathrm{O}$ there a is unequal bond due to electro negativity deference hence it has same dipole moment In $\mathrm{CHCl}_{3} \& \mathrm{H}_{2} \mathrm{O}$ molecule water has more dipole moment than $\mathrm{CHCl}_{3}$ due more electro negative difference. **Dipole moment:** The polarity of covalent bond can be conveniently measured in terms of physical quantity called dipole moment.
Kerala CEE-2012
GENERAL ORGANIC CHEMISTRY
232261
In the following structures, which one is having staggered conformation with maximum dihedral angle?
1
2
3
4
Explanation:
A dihedral angle or torsional angle (Q) is the angle between two bonds originating from different atoms in a Newmann projection The dihedral angle is maximum in anti-conformation of butane i.e. $180^{\circ}$.
232262
For which molecules among the following the resultant dipole moment $(\mu) \neq 0$ ?
1 (iii) \& (iv) only
2 (i) \& (ii) only
3 (ii) \& (iii) only
4 (iv) only
Explanation:
If the direction of bond polarity is in opposite side then the resultant dipole moment will be zero i.e. $(\mu=0)$ but in the case of same direction of bond polarity the resultant dipole moment will not be equal to zero i.e. $(\mu \neq 0)$ Hence (iii) and (iv) have $(\mu \neq 0)$.
AP EAMCET 19-08-2021 Shift-I
GENERAL ORGANIC CHEMISTRY
232263
Assertion: In trans-pent-2-ene, net dipole moment is non zero. Reason: The dipole moment of $\mathrm{C}-\mathrm{CH}_{3}$ and $\mathrm{C}-$ $\mathrm{CH}_{2} \mathrm{CH}_{3}$ bonds are not equal.
1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
(A): In Trans 2-butene the dipole moment of two $\mathrm{C}-\mathrm{CH}_{3}$ bonds are equal \& opposite which is cancel out each other so we can say that trans-2-butene is nonpolor. However in trans-2- pentene the dipole moment of $\mathrm{C}-\mathrm{CH}_{3}$ bond and $\mathrm{C}-\mathrm{CH}_{2}-\mathrm{CH}_{3}$ bond are unequal although it occur dipole each other but not cancel out. Hence we can say that trans-pent-2-ene has some finite dipole moment Both the Assertion and Reason are correct and reason is correct explanation of Assertion.
AIIMS 26 May 2019 (Morning)
GENERAL ORGANIC CHEMISTRY
232267
The increasing dipole moments of the following compounds is
1 I $<$ III $<$ IV $<$ II
2 II $=$ IV $<$ III $<$ I
3 II $=$ I $<$ IV $<$ III
4 III $<$ I $<$ II $<$ IV
Explanation:
Exp : (D) : $\mu=\text { charge } \times \text { distance }$ In compound II \& IV has dipole moment zero due to equal $\mathrm{C}-\mathrm{Cl}$ bond in II \& IV hence these are non-polar. The dipole moment of o-p chlorobenzene has lower than the o-o chlorobenzene because in o-pchlorobenzene one $\mathrm{C}-\mathrm{Cl}$ bond is cancle out and one-C-- $\mathrm{Cl}$ bond has some dipole moment because it has $\alpha=60^{\circ}$ while in case of both $\mathrm{C}-\mathrm{Cl}$ bond has $\alpha=60^{\circ}$. So it has highest bond angle than other molecule. Therefore increasing order of bond angle is given as II $=$ IV $<$ III $<$ I.
BCECE-2015
GENERAL ORGANIC CHEMISTRY
232268
Among the following the molecule of highest dipole moment is
1 $\mathrm{CCl}_{4}$
2 $\mathrm{NH}_{3}$
3 $\mathrm{H}_{2} \mathrm{O}$
4 $\mathrm{CHCl}_{3}$
5 $\mathrm{BF}_{3}$
Explanation:
(C): Dipole moments occur when there is a separation of charge. The compound $\mathrm{H}_{2} \mathrm{O}$ has highest molecule than other because in other molecule metalmetal bond are equal. In these molecule has dipole moment zero because dipoles of the bond cancle each other. In $\mathrm{CHCl}_{3} \& \mathrm{H}_{2} \mathrm{O}$ there a is unequal bond due to electro negativity deference hence it has same dipole moment In $\mathrm{CHCl}_{3} \& \mathrm{H}_{2} \mathrm{O}$ molecule water has more dipole moment than $\mathrm{CHCl}_{3}$ due more electro negative difference. **Dipole moment:** The polarity of covalent bond can be conveniently measured in terms of physical quantity called dipole moment.
Kerala CEE-2012
GENERAL ORGANIC CHEMISTRY
232261
In the following structures, which one is having staggered conformation with maximum dihedral angle?
1
2
3
4
Explanation:
A dihedral angle or torsional angle (Q) is the angle between two bonds originating from different atoms in a Newmann projection The dihedral angle is maximum in anti-conformation of butane i.e. $180^{\circ}$.
232262
For which molecules among the following the resultant dipole moment $(\mu) \neq 0$ ?
1 (iii) \& (iv) only
2 (i) \& (ii) only
3 (ii) \& (iii) only
4 (iv) only
Explanation:
If the direction of bond polarity is in opposite side then the resultant dipole moment will be zero i.e. $(\mu=0)$ but in the case of same direction of bond polarity the resultant dipole moment will not be equal to zero i.e. $(\mu \neq 0)$ Hence (iii) and (iv) have $(\mu \neq 0)$.
AP EAMCET 19-08-2021 Shift-I
GENERAL ORGANIC CHEMISTRY
232263
Assertion: In trans-pent-2-ene, net dipole moment is non zero. Reason: The dipole moment of $\mathrm{C}-\mathrm{CH}_{3}$ and $\mathrm{C}-$ $\mathrm{CH}_{2} \mathrm{CH}_{3}$ bonds are not equal.
1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
(A): In Trans 2-butene the dipole moment of two $\mathrm{C}-\mathrm{CH}_{3}$ bonds are equal \& opposite which is cancel out each other so we can say that trans-2-butene is nonpolor. However in trans-2- pentene the dipole moment of $\mathrm{C}-\mathrm{CH}_{3}$ bond and $\mathrm{C}-\mathrm{CH}_{2}-\mathrm{CH}_{3}$ bond are unequal although it occur dipole each other but not cancel out. Hence we can say that trans-pent-2-ene has some finite dipole moment Both the Assertion and Reason are correct and reason is correct explanation of Assertion.
AIIMS 26 May 2019 (Morning)
GENERAL ORGANIC CHEMISTRY
232267
The increasing dipole moments of the following compounds is
1 I $<$ III $<$ IV $<$ II
2 II $=$ IV $<$ III $<$ I
3 II $=$ I $<$ IV $<$ III
4 III $<$ I $<$ II $<$ IV
Explanation:
Exp : (D) : $\mu=\text { charge } \times \text { distance }$ In compound II \& IV has dipole moment zero due to equal $\mathrm{C}-\mathrm{Cl}$ bond in II \& IV hence these are non-polar. The dipole moment of o-p chlorobenzene has lower than the o-o chlorobenzene because in o-pchlorobenzene one $\mathrm{C}-\mathrm{Cl}$ bond is cancle out and one-C-- $\mathrm{Cl}$ bond has some dipole moment because it has $\alpha=60^{\circ}$ while in case of both $\mathrm{C}-\mathrm{Cl}$ bond has $\alpha=60^{\circ}$. So it has highest bond angle than other molecule. Therefore increasing order of bond angle is given as II $=$ IV $<$ III $<$ I.
BCECE-2015
GENERAL ORGANIC CHEMISTRY
232268
Among the following the molecule of highest dipole moment is
1 $\mathrm{CCl}_{4}$
2 $\mathrm{NH}_{3}$
3 $\mathrm{H}_{2} \mathrm{O}$
4 $\mathrm{CHCl}_{3}$
5 $\mathrm{BF}_{3}$
Explanation:
(C): Dipole moments occur when there is a separation of charge. The compound $\mathrm{H}_{2} \mathrm{O}$ has highest molecule than other because in other molecule metalmetal bond are equal. In these molecule has dipole moment zero because dipoles of the bond cancle each other. In $\mathrm{CHCl}_{3} \& \mathrm{H}_{2} \mathrm{O}$ there a is unequal bond due to electro negativity deference hence it has same dipole moment In $\mathrm{CHCl}_{3} \& \mathrm{H}_{2} \mathrm{O}$ molecule water has more dipole moment than $\mathrm{CHCl}_{3}$ due more electro negative difference. **Dipole moment:** The polarity of covalent bond can be conveniently measured in terms of physical quantity called dipole moment.
Kerala CEE-2012
GENERAL ORGANIC CHEMISTRY
232261
In the following structures, which one is having staggered conformation with maximum dihedral angle?
1
2
3
4
Explanation:
A dihedral angle or torsional angle (Q) is the angle between two bonds originating from different atoms in a Newmann projection The dihedral angle is maximum in anti-conformation of butane i.e. $180^{\circ}$.
NEET Test Series from KOTA - 10 Papers In MS WORD
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GENERAL ORGANIC CHEMISTRY
232262
For which molecules among the following the resultant dipole moment $(\mu) \neq 0$ ?
1 (iii) \& (iv) only
2 (i) \& (ii) only
3 (ii) \& (iii) only
4 (iv) only
Explanation:
If the direction of bond polarity is in opposite side then the resultant dipole moment will be zero i.e. $(\mu=0)$ but in the case of same direction of bond polarity the resultant dipole moment will not be equal to zero i.e. $(\mu \neq 0)$ Hence (iii) and (iv) have $(\mu \neq 0)$.
AP EAMCET 19-08-2021 Shift-I
GENERAL ORGANIC CHEMISTRY
232263
Assertion: In trans-pent-2-ene, net dipole moment is non zero. Reason: The dipole moment of $\mathrm{C}-\mathrm{CH}_{3}$ and $\mathrm{C}-$ $\mathrm{CH}_{2} \mathrm{CH}_{3}$ bonds are not equal.
1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
(A): In Trans 2-butene the dipole moment of two $\mathrm{C}-\mathrm{CH}_{3}$ bonds are equal \& opposite which is cancel out each other so we can say that trans-2-butene is nonpolor. However in trans-2- pentene the dipole moment of $\mathrm{C}-\mathrm{CH}_{3}$ bond and $\mathrm{C}-\mathrm{CH}_{2}-\mathrm{CH}_{3}$ bond are unequal although it occur dipole each other but not cancel out. Hence we can say that trans-pent-2-ene has some finite dipole moment Both the Assertion and Reason are correct and reason is correct explanation of Assertion.
AIIMS 26 May 2019 (Morning)
GENERAL ORGANIC CHEMISTRY
232267
The increasing dipole moments of the following compounds is
1 I $<$ III $<$ IV $<$ II
2 II $=$ IV $<$ III $<$ I
3 II $=$ I $<$ IV $<$ III
4 III $<$ I $<$ II $<$ IV
Explanation:
Exp : (D) : $\mu=\text { charge } \times \text { distance }$ In compound II \& IV has dipole moment zero due to equal $\mathrm{C}-\mathrm{Cl}$ bond in II \& IV hence these are non-polar. The dipole moment of o-p chlorobenzene has lower than the o-o chlorobenzene because in o-pchlorobenzene one $\mathrm{C}-\mathrm{Cl}$ bond is cancle out and one-C-- $\mathrm{Cl}$ bond has some dipole moment because it has $\alpha=60^{\circ}$ while in case of both $\mathrm{C}-\mathrm{Cl}$ bond has $\alpha=60^{\circ}$. So it has highest bond angle than other molecule. Therefore increasing order of bond angle is given as II $=$ IV $<$ III $<$ I.
BCECE-2015
GENERAL ORGANIC CHEMISTRY
232268
Among the following the molecule of highest dipole moment is
1 $\mathrm{CCl}_{4}$
2 $\mathrm{NH}_{3}$
3 $\mathrm{H}_{2} \mathrm{O}$
4 $\mathrm{CHCl}_{3}$
5 $\mathrm{BF}_{3}$
Explanation:
(C): Dipole moments occur when there is a separation of charge. The compound $\mathrm{H}_{2} \mathrm{O}$ has highest molecule than other because in other molecule metalmetal bond are equal. In these molecule has dipole moment zero because dipoles of the bond cancle each other. In $\mathrm{CHCl}_{3} \& \mathrm{H}_{2} \mathrm{O}$ there a is unequal bond due to electro negativity deference hence it has same dipole moment In $\mathrm{CHCl}_{3} \& \mathrm{H}_{2} \mathrm{O}$ molecule water has more dipole moment than $\mathrm{CHCl}_{3}$ due more electro negative difference. **Dipole moment:** The polarity of covalent bond can be conveniently measured in terms of physical quantity called dipole moment.
Kerala CEE-2012
GENERAL ORGANIC CHEMISTRY
232261
In the following structures, which one is having staggered conformation with maximum dihedral angle?
1
2
3
4
Explanation:
A dihedral angle or torsional angle (Q) is the angle between two bonds originating from different atoms in a Newmann projection The dihedral angle is maximum in anti-conformation of butane i.e. $180^{\circ}$.
232262
For which molecules among the following the resultant dipole moment $(\mu) \neq 0$ ?
1 (iii) \& (iv) only
2 (i) \& (ii) only
3 (ii) \& (iii) only
4 (iv) only
Explanation:
If the direction of bond polarity is in opposite side then the resultant dipole moment will be zero i.e. $(\mu=0)$ but in the case of same direction of bond polarity the resultant dipole moment will not be equal to zero i.e. $(\mu \neq 0)$ Hence (iii) and (iv) have $(\mu \neq 0)$.
AP EAMCET 19-08-2021 Shift-I
GENERAL ORGANIC CHEMISTRY
232263
Assertion: In trans-pent-2-ene, net dipole moment is non zero. Reason: The dipole moment of $\mathrm{C}-\mathrm{CH}_{3}$ and $\mathrm{C}-$ $\mathrm{CH}_{2} \mathrm{CH}_{3}$ bonds are not equal.
1 If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
2 If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
(A): In Trans 2-butene the dipole moment of two $\mathrm{C}-\mathrm{CH}_{3}$ bonds are equal \& opposite which is cancel out each other so we can say that trans-2-butene is nonpolor. However in trans-2- pentene the dipole moment of $\mathrm{C}-\mathrm{CH}_{3}$ bond and $\mathrm{C}-\mathrm{CH}_{2}-\mathrm{CH}_{3}$ bond are unequal although it occur dipole each other but not cancel out. Hence we can say that trans-pent-2-ene has some finite dipole moment Both the Assertion and Reason are correct and reason is correct explanation of Assertion.
AIIMS 26 May 2019 (Morning)
GENERAL ORGANIC CHEMISTRY
232267
The increasing dipole moments of the following compounds is
1 I $<$ III $<$ IV $<$ II
2 II $=$ IV $<$ III $<$ I
3 II $=$ I $<$ IV $<$ III
4 III $<$ I $<$ II $<$ IV
Explanation:
Exp : (D) : $\mu=\text { charge } \times \text { distance }$ In compound II \& IV has dipole moment zero due to equal $\mathrm{C}-\mathrm{Cl}$ bond in II \& IV hence these are non-polar. The dipole moment of o-p chlorobenzene has lower than the o-o chlorobenzene because in o-pchlorobenzene one $\mathrm{C}-\mathrm{Cl}$ bond is cancle out and one-C-- $\mathrm{Cl}$ bond has some dipole moment because it has $\alpha=60^{\circ}$ while in case of both $\mathrm{C}-\mathrm{Cl}$ bond has $\alpha=60^{\circ}$. So it has highest bond angle than other molecule. Therefore increasing order of bond angle is given as II $=$ IV $<$ III $<$ I.
BCECE-2015
GENERAL ORGANIC CHEMISTRY
232268
Among the following the molecule of highest dipole moment is
1 $\mathrm{CCl}_{4}$
2 $\mathrm{NH}_{3}$
3 $\mathrm{H}_{2} \mathrm{O}$
4 $\mathrm{CHCl}_{3}$
5 $\mathrm{BF}_{3}$
Explanation:
(C): Dipole moments occur when there is a separation of charge. The compound $\mathrm{H}_{2} \mathrm{O}$ has highest molecule than other because in other molecule metalmetal bond are equal. In these molecule has dipole moment zero because dipoles of the bond cancle each other. In $\mathrm{CHCl}_{3} \& \mathrm{H}_{2} \mathrm{O}$ there a is unequal bond due to electro negativity deference hence it has same dipole moment In $\mathrm{CHCl}_{3} \& \mathrm{H}_{2} \mathrm{O}$ molecule water has more dipole moment than $\mathrm{CHCl}_{3}$ due more electro negative difference. **Dipole moment:** The polarity of covalent bond can be conveniently measured in terms of physical quantity called dipole moment.
Kerala CEE-2012
GENERAL ORGANIC CHEMISTRY
232261
In the following structures, which one is having staggered conformation with maximum dihedral angle?
1
2
3
4
Explanation:
A dihedral angle or torsional angle (Q) is the angle between two bonds originating from different atoms in a Newmann projection The dihedral angle is maximum in anti-conformation of butane i.e. $180^{\circ}$.
