MCQ
Which of the following is wrongly matched
- AGerman silver $Cu + Zn + Ni$
- BAlnico $Fe + Al + Ni + CO$
- ✓Monel metal $Cu + Zn + Sn$
- DDuralumin $Al + Cu + Mg + Mn$
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The amount of energy required to split the double strand $DNA$ into two single strands is . . . .kcal $mol ^{-1}$.
[Given: Average energy per $H$-bond for $A - T$ base pair $=1.0 kcal mol ^{-1}, G - C$ base pair $=1.5 kcal mol ^{-1}$, and $A - U$ base pair $=1.25 kcal mol ^{-1}$. Ignore electrostatic repulsion between the phosphate groups.]
$RCHO + NH_2NH_2 \rightarrow RCHN = NH_2$
What sort of reaction is it ?
$\begin{array}{*{20}{c}}
{C{H_3}}\\
{|\,\,\,\,\,}\\
{{C_6}{H_5}C{H_2} - C - C{H_2} - C{H_3}}\\
{|\,\,\,\,\,}\\
{Br\,\,\,}
\end{array}$ $\xrightarrow[{{C_2}{H_5}OH}]{{{C_2}{H_5}ONa}}$