The number of isomeric structures for C₂H₇N would be:
1. 4
2. 3
3. 2 
4. 1

Number of isomers possible for C₄H₈ are _________

1. 4     

2. 3       

3. 2     

4. 6

The prefix name of -SH group in the IUPAC system is:

1. mercapto             
2. thiol
3. sulfide 
4. None of these

Which of the following will exhibit chirality?             

(1) 2-methyl hexane

(2) 3-methyl hexane

(3) Neopentane

(4) Isopentane

The property by virtue of which a compound can turn the plane of polarization of light is known as:

1. Photolysis              
2. Phosphorescence
3. Optical activity          
4. Polarization

How many primary carbon atoms are there in the compound,

(a) 6               (b) 2

(c) 4               (d) 3

The (R)- and (S)-enantiomers of an optically active compound differ in

(1) their solubility in a chiral solvent

(2) their reactivity with a chiral reagent

(3) their optical rotation of plane polarised light

(4) their melting points

The cylindrical shape of an alkyne is due to 

(1) three sigma C-C bonds

(2) three π C-C bonds

(3) two sigma C-C and one π C-C bonds

(4) one sigma C-C and two π C-C bonds

Maximum enol content is in 

1. 

2.

3.

4. 

Which order for basic character of amine is correct for following compounds?

1. 3>1>2>5>4              2. 3>2>1>5>4

3. 3>1>2>4>5              4. 3>2>1>4>5