General Introduction of Organic Chemistry

Total number of $\sigma$ and $\pi$-bonds are in naphthalene is:

In which of the following molecules, all atoms are not coplanar?

Which one of the following does not have ${\mathrm{sp}}^2$ hybridised carbon ?

The hybridisation of carbon atoms in the C-C single bond of  $\mathrm{H}-\mathrm{C}\equiv \mathrm{C}-\mathrm{CH}={\mathrm{CH}}_{2 }$is:

In Wedge-Dash notation for three-Dimensional representation of an organic molecule, the dashed bond represents.

In the ball-and-stick model, both the atoms and the _____ are shown in the molecule of methane.

A compound $\text{'}A\text{'}$ contains $C$ and $H$ only, and has molecular mass $72.$ Its photochlorination gives a mixture containing only one monochloro and two dichloro hydrocarbons. Deduce the structure of $\text{'}A\text{'}.$

Choose the correct statment:

Which of the following has maximum $\mathrm{s}-$character for intermediate ${\mathrm{C}}^{+}$?

The decreasing order of catenation among the Group-$14$ elements is

Arrange the following $\mathrm{C}-\mathrm{H}$ bonds $\left(\mathrm{\alpha }, \mathrm{\beta }, \mathrm{\gamma }\right)$ in decreasing order of bond energy :

How many pi bonds and sigma bonds are present in following molecule?

The bond between carbon atom $\left(1\right)$ and carbon atom $\left(2\right)$ in compound

The cylindrical shape of alkynes is due to

The above figure represents _____ ?

The above figure represents _____ ?

_____ is a drawing of a 3D molecule as a flat structure. The chiral carbons are represented by crossed lines.

The above picture represents _____ ?

_____ is used to depict the bond projecting out of the plane of the paper and away from the observer.

The general formula ${\mathrm{C}}_{\mathrm{n}}{\mathrm{H}}_{2\mathrm{n}}{\mathrm{O}}_2$  could be for open chain: