IUPAC name of the compound

is:

1. 1,2,3-tricyanopropane

2. propane-1,2,3-tricarbonitrile

3. 1,2,3-cyanopropane

4. propane tricarbylamine

The IUPAC name of the above mentioned compound is - 

1. 3,3-Diethyl-4-methyl-5-(methylethyl)octane

2. 3,3-Diethyl-5-isopropyl-4-methyloctane

3. 4-Isopropyl-5-methyl-6,6-diethyloctane

4. 6,6-Diethyl-4-isopropyl-5-methyloctane

 The compound is an example:

1. aromatic compound                 2. heterocyclic compound

3. annulene                                4. xanthates

IUPAC name of  is:

1. 5-methylhexanol            2. 2-methylhexanol          

3. 2-methylhex-3-enol        4. 4-methylpent-2-enol     

IUPAC name of,

 is:

1. 4-butyl-hexa-2,5-dien-1-al

2. 5-vinyloct-3-en-1-al

3. 5-vinyloct-5-en-8-al

4. 3-butyl-1,4-hexadien-6-al

IUPAC name of  is:

(1) but-2-en-2,3-diol

(2) pent-2-en-2,3-diol

(3) 2-methylbut-2-en-2,3-diol

(4) hex-2-en-2,3-diol

But-2-ene exhibits cis-trans-isomerism due to

1. rotation around C₂-C₃ double bond

2. rotation around C₃-C₄ sigma bond

3. rotation around C₁-C₂ bond

4. restricted rotation around C=C bond

If optical rotation produced by the compound (i) is +52° then that produced by that the compound (ii) is:

1. -52°                2. +52°

3. 0°                   4. unpredictable

Which of the following pairs are enantiomers?                

1. 

2. 

3. 

4. 

In the following, the most stable conformation of n-butane is