MCQ
The charcoal maintained at ${100^o}\,C$ absorbs
- A$Ne$ and $Kr$
- B$He$ and $Ar$
- ✓$Ar,$ $Kr,$ $Xe$
- D$He$ and $Ne$
✓
Answer
Correct option: C.
$Ar,$ $Kr,$ $Xe$
c
(c) Except $He$, all other noble gases are adsorbed by coconut charcoal at low temperatures. The extent of adsorption increases as the atomic size of the noble gas increases.
(c) Except $He$, all other noble gases are adsorbed by coconut charcoal at low temperatures. The extent of adsorption increases as the atomic size of the noble gas increases.
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
Ionisation of $H-$atom would produce
→The total change in the oxidation state of manganese involved in the reaction of $KMnO _4$ and potassium iodide in the acidic medium is $..........$.
→If ethylene, carbon monoxide and water is heated at high temperature, which of the following is formed
Compound $A,$ which is a degradation product of the antibiotic vermiculine has following structure
→$ \begin{array}{c} A \\ \left(C_{4} H_{8} C l_{2}\right) \end{array} $ ${\xrightarrow{ Hydrolysis \;at \;373 \;K }}$ $ \begin{array}{c} B \\ \left(C_{4} H_{8} O\right) \end{array} $
→$B$ reacts with Hydroxyl amine but does not give Tollen's test. Identify $A$ and $B$
The number of optical isomers possible for $\left[\mathrm{Cr}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-}$ is ..... .
→Which one of the following substances will be a mixed salt
For the following reactions the major products are shown
→${H_2}C = CH - CH = C{H_2}\xrightarrow[{0{\,^o}C}]{{HBr}}$ $\begin{array}{*{20}{c}}
{{H_2}C = CH - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br\,\,\,\,\,\,}
\end{array}\xrightarrow{{ + 25{\,^o}C}}$ $\begin{array}{*{20}{c}}
{C{H_2}CH = CHC{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
These provide an example of $......1......$ control at low temperature and $......2......$ control at higher temperature
If a reaction has the experimental rate expression rate $= K [A]^2[B]$, if the concentration of $A$ is doubled and the concentration of $B$ is halved, the what happens to the reaction rate
→The concentration of $NaOH$ solution is ${10^{ - 8}}\,M.$ Find out the $(O{H^ - })$ concentration
→