Download App

STD 12 - p -Block elements - ll — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - p -Block elements - ll4 Marks
MCQ
Which of the following is not true about helium?
  • A
    It has the lowest boiling point
  • B
    It has the highest first ionization energy
  • C
    It can diffuse through rubber and plastic material
  • ✓
    It can form clathrate compounds
✓

Answer

Correct option: D.
It can form clathrate compounds
d
Due to small size of $He$, it escapes from interstitial spaces/void, of molecular lauice of quinols

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

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The geometry of $XeOF_4$ by $VSEPR$ theory is
→
$0.8\, \mathrm{~g}$ of an organic compound was analysed by Kjeldahl's method for the estimation of nitrogen. If the percentage of nitrogen in the compound was found to be $42\, \%$, then $....\,\mathrm{mL}$ of $1\, \mathrm{M}$ $\mathrm{H}_{2} \mathrm{SO}_{4}$ would have been neutralized by the ammonia evolved during the analysis.
→
The weight of silver $($at. wt. $= 108$) displaced by a quantity of electricity which displaces $5600\,mL$ of $O_2$ at $\text{STP}$ will be $... g.$
→
Which of the following hormones is produced under the conditions of stress which stimulate glycogenolysis in the liver of human beings?
→
$NO_2$ required for a reaction is produced by the decomposition of $N_2O_5$ in $CCl_4$ as per the equation  $2N_2O_5 (g) \to 4NO_2 (g) + O_2 (g)$ The initial concentration of $N_2O_5$ is $3.00\, mol\, L^{-1}$ and it is $2.75\, mol\, L^{-1}$ after $30\, minutes$. The rate of formation of $NO_2$ is ............... $mol\, L^{-1}\, min^{-1}$
→
$\alpha -D-$ Glucose and $\beta -D-$ Glucose are not
→
Arrange in decreasing order, the energy of $2s-$ orbital in following atoms $H, Li, Na, K$
→
$2\ gm$ of benzoic acid ( $C_6H_5COOH$ ) dissolved in $25\ gm$ of benzene shown a depression in freezing point equal to $1.62\ K$ . Molal depression constant for benzene is $4.9\ KKg\ mol^{-1}$ . The $\%$ of benzoic acid in dimeric form is ......... $\%.$
→
Order of electron affinity of $F,\;Cl,\;Br$ and $I$ is .....
→
Which of the following has the least energy
→