The incorrect order is :

$\left(\mathrm{a}\right) \mathrm{HF}<\mathrm{HCl}<\mathrm{HBr}<\mathrm{Hl} \mathbf{:}\mathbf{ }\mathrm{Acidic} \mathrm{strength}$
$\left(\mathrm{b}\right) \mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{Hl} \mathbf{:}\mathbf{ }\mathrm{Thermal} \mathrm{stability}$
$\left(\mathrm{c}\right) \mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{Hl} \mathbf{:}\mathbf{ }\mathrm{Boiling} \mathrm{point}$
$\left(\mathrm{d}\right) \mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{Hl} \mathbf{:}\mathbf{ }\mathrm{Bond} \mathrm{dissociation} \mathrm{enthalpy}$

The correct statement among the following  is when ${\mathrm{XeF}}_2 \mathrm{and} {\mathrm{XeF}}_6$ are separately hydrolyzed;

$1. \mathrm{Both} \mathrm{give} \mathrm{out} {\mathrm{O}}_2$

$2. {\mathrm{XeF}}_6 \mathrm{gives} {\mathrm{O}}_2 \mathrm{and} {\mathrm{XeF}}_2 \mathrm{does} \mathrm{not}$

$3. {\mathrm{XeF}}_2 \mathrm{alone} \mathrm{gives} {\mathrm{O}}_2$

$4. \mathrm{Neither} \mathrm{of} \mathrm{them} \mathrm{gives} \mathrm{HF}$

${\mathrm{XeF}}_6$ dissolves in anhydrous $\mathrm{HF}$ to give a good conducting solution that contains-

1. H⁺ and \(XeF_{7}^{-}\) ions
2. \(HF_{2}^{-}\) and \(XeF_{5}^{+}\) ions
3. \(HXeF_{6}^{+}\) and F^- ions
4. None of the above

Which of the following statements about helium is false?

1. It has the lowest boiling point 

2. It has the highest first ionization energy

3. It can diffuse through rubber and plastic material

4. It can form clathrate compounds

Which of the following is an uncommon hydrolysis product of ${\mathrm{XeF}}_2 \mathrm{and} {\mathrm{XeF}}_4$?

$\left(\mathrm{a}\right) \mathrm{Xe}$

$\left(\mathrm{b}\right) {\mathrm{XeO}}_3$

$\left(\mathrm{c}\right) \mathrm{HF}$

$\left(\mathrm{d}\right) {\mathrm{O}}_2$

${\mathrm{SbF}}_5$ reacts with ${\mathrm{XeF}}_4$ to form an adduct. The shapes of cation and anion in the adduct are respectively:

(1) square planar, trigonal bipyramidal       

(2) T-shaped, Octahedral

(3) square pyramidal, octahedral                 

(4) square planar, octahedral

Incorrect statement regarding following reactions is :

(a) 'X' is explosive

(b) 'Y' is an oxyacid of xenon

(c) Both are example of non-redox reaction

(d) ${\mathrm{XeF}}_6$ can undergo partial hydrolysis

Which of the following noble gas does not form clathrate compound?

$\left(\mathrm{a}\right) \mathrm{Kr}$

$\left(\mathrm{b}\right) \mathrm{Ne}$

$\left(\mathrm{c}\right) \mathrm{Xe}$

$\left(\mathrm{d}\right) \mathrm{Ar}$

Correct order of bond angle in given species is :

$\left(\mathrm{a}\right) {\mathrm{SiO}}_4^{4-}>{\mathrm{PCl}}_3>{\mathrm{NCl}}_3>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

$\left(\mathrm{b}\right) {\mathrm{SiO}}_4^{4-}>{\mathrm{NCl}}_3>{\mathrm{PCl}}_3>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

$\left(\mathrm{c}\right) {\mathrm{SiO}}_4^{4-}>{\mathrm{H}}_2\mathrm{Te}>{\mathrm{SbH}}_3>{\mathrm{PCl}}_3>{\mathrm{NCl}}_3$

$\left(\mathrm{d}\right) {\mathrm{NCl}}_3>{\mathrm{PCl}}_3> {\mathrm{SiO}}_4^{4-}>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

The incorrect order is:

$\left(\mathrm{a}\right) \mathrm{N}>\mathrm{P}>\mathrm{As}\mathbf{ }\mathbf{:} \mathrm{Strength} \mathrm{of} \mathrm{\pi }‐\mathrm{bond} \mathrm{with} \mathrm{oxygen} \mathrm{atom}$

$\left(\mathrm{b}\right) {\mathrm{SiF}}_4>{\mathrm{SiCl}}_4>{\mathrm{SiBr}}_4>{\mathrm{Sil}}_4 \mathbf{:}\mathbf{ }\mathrm{Thermal} \mathrm{stability}$

$\left(\mathrm{c}\right) {\mathrm{H}}_2\mathrm{S}>{\mathrm{H}}_2\mathrm{Se}>{\mathrm{H}}_2\mathrm{Te} \mathbf{:}\mathbf{ }\mathrm{Arrhenious} \mathrm{acid} \mathrm{character}$

$\left(\mathrm{d}\right) {\mathrm{CaBr}}_2>{\mathrm{MgBr}}_2>{\mathrm{BeBr}}_2 \mathbf{:}\mathbf{ }\mathrm{Melting} \mathrm{point}$