Bond dissociation energy of CH₄ is 360 kJ/mol and C₂H₆ is 620 kJ/mol. Then bond dissociation energy of C-C bond is

• 170 kJ/mol

• 50 kJ/mol

• 80 kJ/mol

• 220 kJ/mol

Total number of antibonding electrons present in O₂ will be

• 6

• 8

• 4

• 2

In BF₃, the B - F bond length is 1.30Å, when BF₃ is allowed to be treated with Me₃N, it forms an adduct, Me₃N $\to$ BF₃, the bond length of B - F in the adduct is

• greater than 1.30 Å

• smaller than 1.30 Å

• equal to 1.30 Å

• none of these

A double bond connecting two atoms .There is a sharing of :

• 2 electrons

• 1 electron

• 4 electrons

• All electrons

Structure of (SiO₄)^4- ion is :

• tetrahedral

• square planar

• octahedral

• planar triangular

The linear molecule is :

• CH₃

• C₂H₂

• NH₃

• H₂O

The dipole moment is minimum in

• NH₃

• NF₃

• SO₂

• BF₃

${\mathrm{S}}_2{\mathrm{O}}_8^{2-}$ have

• S-S bond

• S-O bridge

• O-O bridge

• All S-O bond lengths are same.

N-N bond length is minimum in

• N₂O

• N₂O₃

• N₂O₄

• N₂O₅

800.

Assertion : Bond dissociation energy is F₂ > Cl₂.

Reason : Cl₂ has more electronic repulsion than F₂.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.