Which of the following is the most stable carbonium ion?

1. 
2. 
3. 
4. 
 

1.
2.
3.
4.

The stability of the given compounds, in descending order, is:

A.		B.
C.		D.

1. A > B > C > D
2. D > B > C > A
3. D > C > B > A
4. A > B > D > C

Which among the following is most basic?

1.  

2. 

3. 

4. 
 

1.
2.
3.
4.

The configuration of given tartaric acid is

1. 2R, 3R         2. 2R, 3S

3. 2S, 3S         4. 2S, 3R

The IUPAC name of the above-mentioned compound is - 

1. (N-Bromo)-3-methyl-2-oxobutanamide

2. (N-Bromo)-2-oxo-4-methylbutanamide

3. (N-Bromo)-1,2-dioxo-3-methylbutanamine carboxamide

4. (N-Bromo)-1-oxo-2-methylpropane

Which of the following $\mathrm{\sigma }$-bonds participate in hyperconjugation?

Correct IUPAC name of the compound 

1. 4-(Ethyl methanolyonxy)phenylpropanoate

2. Ethyl 4-propanoyloxybenzenecarboxylate

3. 4-(1-Oxo-2-oxabutyl)phenylpropanoate

4. 1-(1-Oxo-2-oxbutyl)-4-(1-oxopropoxy)benzene

Correct IUPAC name of the compound  is

(1) 2-Ethyl-3-methylbut-2-ene-1,4-dioic anhydride

(2) 3-Ethyl_2-methylbut-2-enedioic anhydride

(3) 2-Ethyl-3-Methyl-1,4-diketobut-2-enoic anhydride

(4) 2-Ethyl-3-methylcyclopenatanoxy-1,4-dione

The IUPAC name of the following compound is

1. 2-(Ethoxycarbonyl)benzoylchloride

2. Ethyl 2-(chlorocarbonyl)benzoate

3. Ethyl 2-(chloromethanoyl)benzoate

4. Methyl 2-(Chlorocarbonyl)benzene carboxylate.