Chemical Bonding Questions

In the compound CH₂=CH–CH₂–CH₂–C≡CH, the C₂–C₃ bond formed by the overlapping of :

A sp³ hybrid orbital contains:

The d-orbitals involved in sp³d hybridisation is :

In the protonation of H₂O, change occurs in :

Fluorine molecule is formed by:

Which of the following statements is not correct?

The correct order of bond length is -

Nitrogen does not form NF₅ because:

p-p overlapping will be observed in the molecules of :

Which of the following fluorides does not exists?

π bond is formed:

Which is not characteristic of π-bond:

Variable covalency is exhibited by:

In which of the excitation state of chlorine ClF₃ is formed:

The strength of bonds by 2s – 2s, 2p – 2p and 2p – 2s overlapping has the order:

Which of the following compound is formed in the second excitation state of sulphur atom :

which of the following configuration shows second excitation state of iodine:

Which overlapping is involved in HCl molecule:

A sigma bond is formed by the overlapping of:

Out of the two compounds shown below, the vapour pressure of (2) at a particular temperature is expected to be:

The boiling point of methanol is greater than methyl thiol because:

The boiling point of a compound is raised by:

The pair of molecules forming strongest hydrogen bonds are :

Which of the following compounds show intramolecular hydrogen bonding: (1) o-nitrophenol (2) p-nitrophenol (3) phenol (4) salicyl aldehyde

Density of ice is less than that of water because of :

The intermolecular force in hydrogen fluoride is due to :

Hydrogen bonding is formed in compounds containing hydrogen and:

Maximum no. of hydrogen bonds formed by a water molecule in ice is:

The high boiling point of water is due to the presence of:

In which case hydrogen bond will not be observed -

Acetic acid exists as dimer in benzene due to :

Which of the following has strongest intra molecular hydrogen bonding:

Weakest hydrogen bond is:

Intra molecular H-bond:

The correct order of volatility is :

H₂O boils at higher temperature than H₂S, because it is capable of forming:

In which compound coordinate bond is present:

The pair of compounds which can form a co-ordinate bond is:

The bonds present in N₂O₅ are:

The correct statement for the reaction NH₃ + H⁺ → NH₄⁺

Correct statement regarding this reaction BF₃ + NH₃ → [F₃B ← NH₃]

In Co-ordinate bond, the acceptor atoms must essentially contain in its valency shell an orbital:

Which of the following statements is correct :

Correct order of polarising power is:

Which of the following is not a characteristic of a covalent compound:

The correct order of increasing covalent character of the following is:

According to Fajan’s rules necessary condition to form covalent bond is:

The correct order of decreasing polarisable ions is:

Elements have electronegativities 1.5 and 3.0, bond formed between them would be :

Among LiCl, BeCl₂, BCl₃ and CCl₄, the covalent bond character follows the order: