The correct hybridization states of carbon atoms in the following compound are - $\stackrel{1}{\mathrm{ \; \; C}}{H}_2=\stackrel{2}{C}H-\stackrel{3}{C}\equiv N$
 

1.	C1= sp , C2= sp3 , C3= sp2	2.	C1= sp2 , C2= sp3 ,  C 3 = sp3
3.	C1= sp2 , C2= sp2 ,  C 3 = sp	4.	C1= sp3 , C2= sp3 ,  C 3 = sp3

In sulphur estimation, 0.157 g of an organic compound gave 0.4813 g of barium sulphate. The percentage of sulphur in the compound is-

1. 39.10 %

2. 48.13 %

3. 42.10 %

4. 52. 43 %

The number of σ and π bonds in the molecule $C_6{H}_6$ are -

The correct IUPAC name, among the following, is-

The chiral compound among the following is:

Match Column I with Column II.

Codes

Match the type of mixture of compounds in Column I with the technique of separation/purification given in column II.

Codes

The addition of HCl to an alkene proceeds in two steps. The first step is the attack of H⁺ ion on the double bond portion. The same can be shown as-

1.		2.
3.		4.	All of these are possible

The correct representation involving heterolytic fission of ${\mathrm{CH}}_3-\mathrm{Br}$ among the following is:

1.
2.
3.
4.

The most stable carboxylate ion among the following is-

1. ${\mathrm{CH}}_3-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-{\mathrm{O}}^{-}$

2. $\mathrm{Cl}-{\mathrm{CH}}_2-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-{\mathrm{O}}^{-}$

3. $\mathrm{F}-{\mathrm{CH}}_2-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-{\mathrm{O}}^{-}$

4. ${\left(\mathrm{F}\right)}_2-\mathrm{CH}-\stackrel{\mathrm{O}}{\stackrel{\left|\right|}{\mathrm{C}}}-{\mathrm{O}}^{-}$