Which of the following is not present in $RNA$?

Identify the carbon atom numbered from $C_1^{\prime}$ to $C_5^{\prime}$ of the monosaccharide unit of a $DNA$ nucleotide that lacks an oxygen atom from the $-OH$ group.

If on a strand of $DNA$ the base sequence is $ATTGACGCAT$ then the sequence transcription on $RNA$ would be

Which of the following statements is not true about $RNA$?

The base adenine occurs in

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.