Covalent Bond Past Year (1998 - 2005) MCQs Chemical Bonding and Molecular Structure Chemistry NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

d $π$ - p $π$ bond is present in:

1. $C O_{3}^{2 -}$

2. $P O_{4}^{- 3}$

3. $N O_{3}^{-}$

4. $N O_{2}^{-}$

Subtopic: Covalent Bond |

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$p_{π} - d_{π}$ bonding is present in:

1. ${NO}_{3}^{-}$

2. ${SO}_{3}^{- 2}$

3. ${BO}_{3}^{- 3}$

4. ${CO}_{3}^{- 2}$

Subtopic: Covalent Bond |

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In NO₃^– ion, the number of bond pair and lone pair of electrons on nitrogen atom are respectively:

1.	2, 2	2.	3, 1
3.	1, 3	4.	4, 0

Subtopic: Covalent Bond |

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The incorrect statements among the following for sigma- and pi- bonds formed between two carbon atoms is:

1.	Sigma-bond is stronger than a pi-bond
2.	Bond energies of sigma- and pi-bonds are of the order of 264 KJ/mol and 347 KJ/mol, respectively
3.	Free rotation of atoms about a sigma bond is allowed but not in the case of a pi-bond
4.	Sigma-bond determines the direction between carbon atoms but a pi-bond has no primary effect in this regard

Subtopic: Covalent Bond |

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