The correct number of σ and π bonds in the molecule $C{H}_{3}N{O}_2$ is:

	σ (C - H)	σ (C - N)	σ (N - O)	π (N=O)
1.	1	1	1	3
2.	1	1	3	1
3.	1	3	1	3
4.	3	1	1	1

The correct IUPAC name is -

The correct IUPAC name of the following structure is

The  IUPAC name of the following molecule is -

The species present below is

1. carbocation

2. electrophile

3. nucleophile

4. carboanion

 ${\mathrm{H}}_3{\mathrm{CO}}^{-}$ ion is a-

1. carbocation

2. nucleophile

3. electrophile

4. carboanion

${\mathrm{Br}}^{-}$ ion is a -

1. carbocation

2. carboanion 

3. electrophile

4. nucleophile

${\mathrm{H}}_3\mathrm{COH}$ molecule is -

1. carbocation

2. nucleophile

3. electrophile

4. carboanion

The species present below is

$\mathrm{R}-\mathrm{NH}-\mathrm{R}$

1. nucleophile

2. carbocation

3. electrophile

4. carboanion

Chlorine atom can be classified as: