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.

A hydrocarbon (R) has six membered ring in which there is no unsaturation. Two alkyl groups are atttached to the ring adjacent to each other. One group has 3 carbon atoms with branching at 1st carbon atom of chain and another has 4 carbon atoms. The larger alkyl group has main chain of three carbon atoms of which second carbon is substituted. Correct IUPAC name of compound (R) is

(1) 1-(1-Methylethyl)-2-(1-methylpropyl)cyclohexane

(2) 1-(2-Methylethyl)-2-(1-methylpropyl)cyclohexane

(3) 1-(1-Methylethyl)-2-(2-methylpropyl)cyclohexane

(4) 1-(1-Methylethyl)-2-butylcyclohexane

Identify the structure of x,

(1)

(2)

(3)

(4)

In which reaction a chiral reactant is giving a chiral product.

(1) (2) (3) (4)

Which of the following statements is not correct?

1. A compound whose molecule has D configuration will always be dextrorotatory

2. A compound whose molecule has D configuration may be dextrorotatory or levorotatory

3. A compound whose molecule has R configuration may be dextrorotatory or levorotatory

4. A compound whose molecule has L configuration may be dextrorotatory or levorotatory

Which of the following statements about the inductive effect is correct?

The correct stability order of following species is :

(1) x > Y > w > z

(2) y > x > w > z

(3) x > w > z > y

(4) z > x > y > w

Which of the following does not represent the resonating structure of

1. 
2. 
3. 
4. 

Ordinarily the barrier to rotation about a carbon-carbon double bond is quite high but in compound P double bond between two rings was observed by NMR to have a rotational energy barrier of only about 20 cal.\mol., showing that it has lot of single bond charcter. The reason for this is

(1) Double bond having partial triple bond charcter because of resonance

(2) Doule bond undergo flipping

(3) Double bond having very high single bond charcter because of aromaticity gained in both three and five membered rings.

(4) +I effect of nC₃H₇ groups makes double bond having partial single bond character.

The most contributing structure in nitroethene among the following is-

1.  
2.  
3.  
4.