MCQ
The $N-$ base which differenciate $DNA$ with $RNA$ is
- ACytosine
- ✓Uracil
- CAdenine
- DGuanine
✓
Answer
Correct option: B.
Uracil
b
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Match the compounds in Column $I$ with their characteristic test $(s)$ reaction $(s)$ given in Column $II$. Indicate your answer by darkening the appropriate bubbles of the $4 \times 4$ matrix gives in the $ORS$.
→| Column $I$ | Column $II$ |
| $Image$ | $(p)$ sodium fusion extract of the compound gives Prussian blue colour with $\mathrm{FeSO}_4$ |
| $Image$ | $(q)$ gives positive $\mathrm{FeCl}_3$ test |
| $Image$ | $(r)$ gives white precipitate with $\mathrm{AgNO}_3$ |
| $Image$ | $(s)$ reacts with aldehydes to form the corresponding hydrazone derivative |
The total no. of chelate rings in $[Ni(dmg)_2]$ are
→Inorganic graphite is:
Rutherford’s $\alpha$-particle scattering experiment proved that atom has
→Maximum enol content is in
Principle functional group in given compound is
→$\begin{array}{*{20}{c}}
{{H_3}C - C - O - C - C{H_2} - O - C{H_3}} \\
{||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
In mildly alkaline medium, thiosulphate ion is oxidized by $MnO _{4}^{-}$ to $"A".$ The oxidation state of sulphur in $"A"$ is ..... .
→In this diol
For the following reaction scheme, percentage yields are given along the arrow :
→$x g$ and $y g$ are mass of $R$ and $U$, respectively.
(Use : Molar mass (in $g mol { }^{-1}$ ) of $H , C$ and $O$ as $1,12$ and $16$ , respectively)
($1$) The value of $x$ is
($2$) The value of $y$ is
Give thwe answer or quetion ($1$) and ($1$)
The naturally occurring amino acid that contains only one basic functional group in its chemical structure is