Download App

p -Block elements - ll — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
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.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from p -Block elements - ll→p -Block elements - ll — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Which of the following element is extracted commercially by the electrolysis of an aqueous solution of its compound
→
When electric current is supplied through an ionic hydride of fused state, then
→
When ${H_2}S$ is passed through acidified $KMn{O_4},$ we get
→
$ \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 helical structure of protein is stabilised by
→
The unit of ebulioscopic constant is ___________.
→
Which of the following oxidation reactions can be carried out with chromic acid in aqueous acetone at $5 - {10\,^o}C$
→
The oxidation number of sulphur in ${H_2}{S_2}{O_7}$ and iron in ${K_4}Fe{(CN)_6}$ is respectively
→
In esterification, the reactivity of alcohols is
→
When $0.1\, mole$ of $CoCl_3(NH_3)_5$ is treated with excess of $AgNO_3$, $0.2\, mole$ of $AgCl$ are obtained. The conductivity of solution will correspond to
→