Valence Bond Theory, VBT
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314015 Ratio of \({\rm{\sigma }}\,\,{\rm{and}}\,\,{\rm{\pi }}\) bonds is in order
A : Tetracyanomethane
B : Carbondioxide
C : Benzene
D : 1,3-buta-di-ene

1 \({\rm{A = B < C < D}}\)
2 \({\rm{A = B < D < C}}\)
3 \({\rm{A = B = C = D}}\)
4 \({\rm{C < D < A < B}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314004 The correct combination of the statements is
i) The formation of a cation from a neutral atom is favoured by small size of the atom.
ii) \({\rm{\pi - }}\) bond does not exist between two atoms without \({\rm{\sigma - }}\) bond.
iii) The formation of chemical bond is associated with an increase in potential energy.

1 Only i and ii are correct
2 Only ii is correct
3 Only ii and iii are correct
4 Only i and iii are correct
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314005 \({\rm{\pi - }}\) bond is formed by the overlapping of

1 p - p orbitals along their axis
2 s - p orbitals along the axis of p - orbital
3 p - p orbitals perpendicular to their axis
4 s - s orbitals
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314006 Assertion :
\(\pi\) bonds are weaker than \(\sigma\) bonds.
Reason :
\(\pi\) bonds are formed by the sideways overlapping of \({\text{p - p}}\) orbitals along their axes.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314007 Sigma bonds are

1 Cylindrically symmetrical about the bond axis
2 Perpendicular to the bond axis
3 Asymmetrical about the bond axis
4 Both b & c
NEET DIGITAL LIBRARY
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314015 Ratio of \({\rm{\sigma }}\,\,{\rm{and}}\,\,{\rm{\pi }}\) bonds is in order
A : Tetracyanomethane
B : Carbondioxide
C : Benzene
D : 1,3-buta-di-ene

1 \({\rm{A = B < C < D}}\)
2 \({\rm{A = B < D < C}}\)
3 \({\rm{A = B = C = D}}\)
4 \({\rm{C < D < A < B}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314004 The correct combination of the statements is
i) The formation of a cation from a neutral atom is favoured by small size of the atom.
ii) \({\rm{\pi - }}\) bond does not exist between two atoms without \({\rm{\sigma - }}\) bond.
iii) The formation of chemical bond is associated with an increase in potential energy.

1 Only i and ii are correct
2 Only ii is correct
3 Only ii and iii are correct
4 Only i and iii are correct
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314005 \({\rm{\pi - }}\) bond is formed by the overlapping of

1 p - p orbitals along their axis
2 s - p orbitals along the axis of p - orbital
3 p - p orbitals perpendicular to their axis
4 s - s orbitals
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314006 Assertion :
\(\pi\) bonds are weaker than \(\sigma\) bonds.
Reason :
\(\pi\) bonds are formed by the sideways overlapping of \({\text{p - p}}\) orbitals along their axes.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314007 Sigma bonds are

1 Cylindrically symmetrical about the bond axis
2 Perpendicular to the bond axis
3 Asymmetrical about the bond axis
4 Both b & c
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CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314015 Ratio of \({\rm{\sigma }}\,\,{\rm{and}}\,\,{\rm{\pi }}\) bonds is in order
A : Tetracyanomethane
B : Carbondioxide
C : Benzene
D : 1,3-buta-di-ene

1 \({\rm{A = B < C < D}}\)
2 \({\rm{A = B < D < C}}\)
3 \({\rm{A = B = C = D}}\)
4 \({\rm{C < D < A < B}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314004 The correct combination of the statements is
i) The formation of a cation from a neutral atom is favoured by small size of the atom.
ii) \({\rm{\pi - }}\) bond does not exist between two atoms without \({\rm{\sigma - }}\) bond.
iii) The formation of chemical bond is associated with an increase in potential energy.

1 Only i and ii are correct
2 Only ii is correct
3 Only ii and iii are correct
4 Only i and iii are correct
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314005 \({\rm{\pi - }}\) bond is formed by the overlapping of

1 p - p orbitals along their axis
2 s - p orbitals along the axis of p - orbital
3 p - p orbitals perpendicular to their axis
4 s - s orbitals
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314006 Assertion :
\(\pi\) bonds are weaker than \(\sigma\) bonds.
Reason :
\(\pi\) bonds are formed by the sideways overlapping of \({\text{p - p}}\) orbitals along their axes.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314007 Sigma bonds are

1 Cylindrically symmetrical about the bond axis
2 Perpendicular to the bond axis
3 Asymmetrical about the bond axis
4 Both b & c
For More Updates join with Us
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314015 Ratio of \({\rm{\sigma }}\,\,{\rm{and}}\,\,{\rm{\pi }}\) bonds is in order
A : Tetracyanomethane
B : Carbondioxide
C : Benzene
D : 1,3-buta-di-ene

1 \({\rm{A = B < C < D}}\)
2 \({\rm{A = B < D < C}}\)
3 \({\rm{A = B = C = D}}\)
4 \({\rm{C < D < A < B}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314004 The correct combination of the statements is
i) The formation of a cation from a neutral atom is favoured by small size of the atom.
ii) \({\rm{\pi - }}\) bond does not exist between two atoms without \({\rm{\sigma - }}\) bond.
iii) The formation of chemical bond is associated with an increase in potential energy.

1 Only i and ii are correct
2 Only ii is correct
3 Only ii and iii are correct
4 Only i and iii are correct
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314005 \({\rm{\pi - }}\) bond is formed by the overlapping of

1 p - p orbitals along their axis
2 s - p orbitals along the axis of p - orbital
3 p - p orbitals perpendicular to their axis
4 s - s orbitals
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314006 Assertion :
\(\pi\) bonds are weaker than \(\sigma\) bonds.
Reason :
\(\pi\) bonds are formed by the sideways overlapping of \({\text{p - p}}\) orbitals along their axes.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314007 Sigma bonds are

1 Cylindrically symmetrical about the bond axis
2 Perpendicular to the bond axis
3 Asymmetrical about the bond axis
4 Both b & c
NEET DIGITAL LIBRARY
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314015 Ratio of \({\rm{\sigma }}\,\,{\rm{and}}\,\,{\rm{\pi }}\) bonds is in order
A : Tetracyanomethane
B : Carbondioxide
C : Benzene
D : 1,3-buta-di-ene

1 \({\rm{A = B < C < D}}\)
2 \({\rm{A = B < D < C}}\)
3 \({\rm{A = B = C = D}}\)
4 \({\rm{C < D < A < B}}\)
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314004 The correct combination of the statements is
i) The formation of a cation from a neutral atom is favoured by small size of the atom.
ii) \({\rm{\pi - }}\) bond does not exist between two atoms without \({\rm{\sigma - }}\) bond.
iii) The formation of chemical bond is associated with an increase in potential energy.

1 Only i and ii are correct
2 Only ii is correct
3 Only ii and iii are correct
4 Only i and iii are correct
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314005 \({\rm{\pi - }}\) bond is formed by the overlapping of

1 p - p orbitals along their axis
2 s - p orbitals along the axis of p - orbital
3 p - p orbitals perpendicular to their axis
4 s - s orbitals
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314006 Assertion :
\(\pi\) bonds are weaker than \(\sigma\) bonds.
Reason :
\(\pi\) bonds are formed by the sideways overlapping of \({\text{p - p}}\) orbitals along their axes.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE

314007 Sigma bonds are

1 Cylindrically symmetrical about the bond axis
2 Perpendicular to the bond axis
3 Asymmetrical about the bond axis
4 Both b & c