Hybridisation in Carbon

Q.

Which of the following is Lindlar catalyst?

1. Zinc chloride and $\mathrm{HCl}$

2. Partially deactivated palladised charcoal

3. Sodium and Liquid ${\mathrm{NH}}_3$

4. Cold dilute solution of ${\mathrm{KMnO}}_4$

Q. Specify the hybridisations of the central atoms in $N_3^{-},NOCl$ and $N_{2}O$.

1. $sp,s{p}^2,sp$
2. $sp,sp,s{p}^3$
3. $s{p}^2,s{p}^2,sp$
4. $s{p}^2,sp,sp$

Q. Shape of the methane molecule is ________.

1. square planar
2. tetrahedral
3. trigonal planar
4. pyramidal

Q. The $C-H$ bond distance is the longest in :

1. $C_2{H}_2$
2. $C_2{H}_4$
3. $C_2{H}_6$
4. $C_2{H}_{2}B{r}_2$

Q.

The linear shape of $C{O}_2$ is due to

1. $p\pi -p\pi$ bonding between carbon and oxygen
   
2. $s{p}^3$ hybridisation of carbon
   
3. $s{p}^2$ hybridisation of carbon
   
4. $sp$ hybridisation of
   carbon
   

Q. In allene $\left(C_3{H}_4\right)$, the type(s) of hybridization of the carbon atoms is/are:

1. $sp$ and $s{p}^3$
2. $sp$ and $s{p}^2$
3. Only $s{p}^2$
4. $s{p}^2$ and $s{p}^3$

Q. ntASSAERTION - IN BENZYNE THE HYBRIDISATION OF TRIPLY BONDED CARBON IS sp2n ntREASON-THE SECOND PIE BOND IS FORMED BY sp2 HYBRIDISED ORBITALn ntALSO TELL ME WHAT IS BENZYNE AND SECOND PIE BONDn

Q.

Is Iodine an Acid or Base?

Q. $M{n}^{2+}$ forms a complex with $B{r}^{–}$ ion. The magnetic moment of complex is $5.92BM$. The probable formula and geometry of the complex, are

1. $[MnB{r}_6{]}^{2–},\text{Octahedral}$
2. $[MnB{r}_5{]}^{3–},\text{Trigonal planar}$
3. $[MnB{r}_4{]}^{2–},\text{Square planar}$
4. $[MnB{r}_4{]}^{2–},\text{Tetrahedral}$

Q.

Indicate the type of hybridization of each carbon atom in the following :-

1. HCONH

Q. The bond length of $C-Cl$ in $C{H}_3-Cl$ is longer than that in chlorobenzene because:

1. $Cl$ is attached to $s{p}^2$ hybridised $C$ atom in $C{H}_3-Cl$ and attached to $s{p}^2$ hybridised $C$ atom in chlorobenzene
2. $Cl$ is attached to $s{p}^3$ hybridised $C$ atom in $C{H}_3-Cl$ and attached to $s{p}^2$ hybridised $C$ atom in chlorobenzene
3. $Cl$ is attached to $s{p}^3$ hybridised $C$ atom in $C{H}_3-Cl$ and attached to $s{p}^3$ hybridised $C$ atom in chlorobenzene
4. $Cl$ is attached to $s{p}^2$ hybridised $C$ atom in $C{H}_3-Cl$ and attached to $s{p}^3$ hybridised $C$ atom in chlorobenzene

Q.

How to find the hybridisation of the given organic compound?

Q. The pair of species having identical shapes for molecules of both species is:

1. $C{F}_4,S{F}_4$
2. $Xe{F}_2,C{O}_2$
3. $B{F}_3,PC{l}_3$
4. $P{F}_5,I{F}_5$

Q. Which among the following molecules has the shortest $CH$ bond length?

1. Ethene
2. Ethyne
3. All of the above have equal $CH$ bond lengths
4. Ethane

Q. Group reagent for group I radicals is

1. $H_{2}S$ gas in the presence of $Dil.HCl$​
2. None
3. $Dil.H_{2}S{O}_4$
4. $Dil.HCl$

Q.

The structure of $C{H}_2=C=C{H}_2$ is

1. Linear

2. Planar

3. Non-planar

4. Has several resonance structures

Q. In the hydrocarbon $\underset{\left(1\right)}{C}{H}_2=\underset{\left(2\right)}{C}H-\underset{\left(3\right)}{C}\equiv CH$, the state of hybridisation of carbons 1, 2 and 3 respectively are:

1. $s{p}^3,s{p}^2,sp$
2. $s{p}^2,s{p}^2,sp$
3. $s{p}^2,sp,s{p}^3$
4. $s{p}^2,s{p}^3,sp$

Q.

In amines , the hybridisation state of N is:

1. sp²

2. sp²d

3. sp

4. sp³

Q.

The above reaction proceeds through

1. Nucleophilic substitution

2. Electrophilic substitution

3. More than one of the above processes

4. Free radical substitution

Q. When o-xylene is reacted with $O_3$ followed by $Zn/H_{2}O$, total number of different types of product(s) obtained is/are:

Q.

Write the number of $\mathrm{C}$ and $\mathrm{H}$ atoms in a molecule of Pentane.

Q.

Why is benzene extra ordinarily stable though it contains three double bonds?

Q. The number of sigma and pi-bonds in but-1-ene-3-yne are:

1. 5 $\sigma$ and 5 $\pi$
2. 7 $\sigma$ and 3 $\pi$
3. 8 $\sigma$ and 2 $\pi$
4. 6 $\sigma$ and 4 $\pi$

Q. Each carbon atom in benzene is in which state of hybridization?

1. sp³

2. sp²

3. sp

4. s³p

Q. In the hydrocarbon $\underset{\left(1\right)}{C}{H}_2=\underset{\left(2\right)}{C}H-\underset{\left(3\right)}{C}\equiv CH$, the state of hybridisation of carbons 1, 2 and 3 respectively are:

1. $s{p}^3,s{p}^2,sp$
2. $s{p}^2,s{p}^3,sp$
3. $s{p}^2,sp,s{p}^3$
4. $s{p}^2,s{p}^2,sp$

Q.

What is the state of hybridisation of carbon in (a) $C{O}_3^{2-}$ (b) diamond (c) graphite?

Q. The non-polar molecule is:

1. Cis-1, 2-dichloroethane
2. 1, 3-dichlorobenzene
3. trans 1, 2-dichloroethene
4. $N{H}_3$

Q.

Question 45

Predict the hybridisation of each carbon in the molecule of organic compound given below. Also indicate the total number of sigma and pi-bonds in this molecule.

Q.

The compound in which carbon uses only its $s{p}^3$ hybrid orbitals for bond formation is?

1. 

2. 

3. 

4. 

Q. In the compound $C{H}_3-CH=CH-C{H}_2-C\equiv CH$, the hybridisation of C₁, C₃ and C₅ bonds respectively is

1. $s{p}^3,spands{p}^2$
2. $s{p}^2,spands{p}^3$
3. $s{p}^3,s{p}^{3}andsp$
4. $sp,s{p}^{3}ands{p}^2$