Select the correct sequence of True $(T)$ and False $(F)$ statements from the following:
$(i)$ $\text{Pentose sugar} + \text{base} \rightarrow \text{Nucleotide}$
$(ii)$ $\text{Nucleotide} + \text{phosphate} \rightarrow \text{Nucleoside}$
$(iii)$ $DNA$ contains four bases $A$,$G$,$C$ and $T$
$(iv)$ $RNA$ contains four bases $A$,$G$,$C$ and $U$.

$DNA$ consists of two polynucleotide chains. Each chain forms a right-handed spiral with how many bases in one turn of the spiral?

Identify the nitrogenous base of nucleic acid from the following that has a double-ring structure.

In the double-strand helix structure of $DNA,$ thymine forms hydrogen bonds with

$A$ nucleotide consists of

Fill in the blanks:
$(1)$ Genetic information containing molecules is known as ........
$(2)$ The formulas of ammonium cyanate and urea are ........ and ......... respectively.
$(3)$ The hybridisation type of carbon in methane,ethane,ethene,and ethyne is ..........,.........,......... and ......... respectively.
$(4)$ From $sp^3, sp^2$ and $sp$ hybrid orbitals,....... is most and ......... is least electronegative.