Bond present between two residues of carbohydrate is

Bond present between two nucleotodes of a polynucleotide is

The bond present between two nucleotides of a polynucleotide is

Linkage present in between glucose residues of cellulose is

Linkage present in between glucose residues of cellulose is

Linkage present in between glucose residues of cellulose is

The element not present in carbohydrate is

What is the type of bond present between the two carbon atoms in ethane?

What is the type of bond present between the two carbon atoms in ethane?

The number of sigma and pi -bonds present between the two carbon atoms in calcium carbide are respectively-