$CH _3-\overset{\overset{O}{||}}C-CH _3$

${ CH } _{ 3 }-CH=O$

${ CH } _{ 3 }-\underset { || }{ C } -{ CH } _{ 2 }-CH _3\ \quad \quad \quad  O$

${ CH } _{ 3 }-{ CH _2 } -{ CH } _{ 3 }\ \quad \quad \quad \quad $

Two $\pi $-bond

Seven mole of $\sigma $-bond

Sixteen lone pair of electron

Fourteen mole of $\sigma $-bond

I, II, III

I, II

II, III

I, III

$\left[ {8s + 4t} \right] - \left[ {4p + q + 5r} \right]$

$\left[ {4p + 2q + 5r} \right] - \left[ {8s + 4t} \right]$

$\left[ {4p + 2q + 5r + 8s + 4t} \right]$

$\left[ {2q + q + 5r + } \right] - \left[ {8s + 4t} \right]$

$\alpha > \beta >\gamma $

$\beta >\gamma > \alpha $

$\beta >\alpha >\gamma $

$\gamma > \beta > \alpha $

$2$ and $2$

$1$ and $3$

$2$ and $1$

None of these

A sigma bond is weaker than pi bond.

A sigma bond is stronger than pi bond.

A double bond is stronger than a single bond.

A double bond between two atoms is shorter than a single bond between the same atoms.

Both assertion and reason are true, and reason is not the true
explanation of the assertion.

Both assertion and reason are true, but reason is the true
explanation of the assertion.

Assertion is true, but reason is false

Both assertion and reason are false.

$99\ kcal$

$140\ kcal$

$200\ kcal$

$60\ kcal$

all $O-$ to $-H$ bonds are $\pi$ bonds

all $C-$ to $-H$ bonds are $\sigma $ bonds

all $C-$ to $-C$ bonds are $\sigma $ and/or $\pi$ bonds

all $C-$ to $-C$ bonds are $\pi$ bonds

two sigma and two pi bonds

three sigma and one pi bonds

two sigma and one pi bonds

two sigma and three pi bonds

(i) 2 $\sigma$, 1 $\pi$; (ii) 1 $\sigma$, 3 $\pi$; (iii) 2 $\sigma$, 2 $\pi$

(i) 2 $\sigma$, 1 $\pi$; (ii) 3 $\sigma$, 1 $\pi$; (iii) 2 $\sigma$, 2 $\pi$

(i) 1 $\sigma$, 2 $\pi$; (ii) 2 $\sigma$, 2 $\pi$; (iii) 2 $\sigma$, 2 $\pi$

(i) 1 $\sigma$, 2 $\pi$; (ii) 3 $\sigma$, 1 $\pi$; (iii) 2 $\sigma$, 2 $\pi$

$CS _2$

$CO _2$

$NO _2$

$NO$

$N _2$

$N _2H _2$

$ N _2F _2$

All have equal bond length.

Double bond is shorter than a single bond

$\sigma$-bond is weaker than a $\pi$-bond

Double bond is stronger than a single bond

Covalent bond is stronger than hydrogen bond

$NO _3^-$

$SO _3^{2-}$

$BO _3^{3-}$

$CO _3^{2-}$

A sigma bond is stronger than a pi-bond.

Bond energies of sigma and pi-bonds are of the same order.

Free rotation of atoms about a sigma bond is allowed but not in case of a pi-bond.

A sigma bond determines the direction between carbon atoms, but a pi-bond has no primary effect in this regard.

three $\sigma$- and three $\pi$-bond

two $\sigma$- and one $\pi$-bond

two $\sigma$- and two $\pi$ - bonds

three $\pi$- bonds only

one $\sigma$- and two $\pi$ - bonds

two $\sigma$- and one $\pi$ - bonds

three $\sigma$- and three $\pi$ - bonds

one $\sigma$- and four $\pi$ - bonds

$18, 2$

$18, 1$

$17, 2$

$17, 1$

$10\, \sigma,\, 3\, \pi$

$10\, \sigma,\, 2\, \pi$

$9\, \sigma,\, 2\, \pi$

$8\, \sigma,\, 3\, \pi$

$1$ $\sigma$ and $2$ $\pi$ - bonds, $2$ L.P.

$1$ $\sigma$ and $1$ $\pi$ - bonds, $1$ L.P.

$2$ $\sigma$ and $1$ $\pi$ - bonds, No L.P.

$1$ $\sigma$, $2$ $\pi$, and No L.P.

It has 5$\sigma$ and 2$\pi$ bond

Nitrogen - oxygen bond length is higher than nitric oxide $(NO)$

It is a diamagnetic species

$BF$ bond length in this compound is lower than in $BF _3$

$204$ pm and $105^{\circ}$

$102$ pm and $120^{\circ}$

$204$ pm and $180^{\circ}$

$102$ pm and $60^{\circ}$

three sigma bonds

three $\pi$-bonds

one sigma and two $\pi$-bonds

two sigma and one $\pi$-bonds

7 and 3

6 and 2

4 and 3

All are sigma bonds

$10,3$

$4,9$

$3,10$

$9,4$

$\sigma _{p-p}>\pi _{p-p}>\sigma _{s-s}$

$\sigma _{p-p}>\sigma _{s-s}>\pi _{p-p}$

$\sigma _{s-s}>\sigma _{p-p}>\pi _{p-p}$

$\pi _{p-s}>\sigma _{s-s}>\sigma _{p-p}$

$BF _4^-$

$SF _4$

$SiF _4$

$XeF _4$

stronger than sigma bond

weaker than sigma bond

stronger than ionic bond

weaker than hydrogen bond

10 $\sigma$, 2$\pi$

12 $\sigma$, 2$\pi$

15 $\sigma$, 2$\pi$

13 $\sigma$, 3$\pi$

${(C - C) = (C = C) = (C \equiv C)}$

${C \equiv C < C = C < C - C}$

$C - C < C = C < C \equiv C$

$C = C < C \equiv C < C - C$

Two sigma and two pi bonds

Three sigma and one pi bonds

Two sigma and one pi bonds

Two sigma and three pi bonds

two sigma and two pi bonds

three sigma and one pi bonds

two sigma and one pi bonds

two sigma and three pi bonds

It reacts with $H _2O$ forming $C _3H _6$.

It reacts with $H _2O$ forming $C _3H _4$.

It has two sigma and two pi bonds.

It has three sigma and one pi bonds.

$H _2S _2O _3$

$P _4O _{10}$

$SO _3$

$P _4S _{10}$

$n$ and $(n - 1)$

$(n - 1)$ and $(n - 1)$

$(n - 1)$ and $n$

$n$ and $n$

$\pi$ - character only

both $\sigma$ and $\pi$ - characters

ionic character

$\sigma$ - character only