${\mathrm{SbF}}_5$ 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

Which of the following statements about the subsequent reactions is false?

(a) 'X' is explosive

(b) 'Y' is an oxyacid of xenon

(c) Both are examples of non-redox reactions

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

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

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>\mathrm{Kr}$

$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>\mathrm{Ne}$

$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>\mathrm{Xe}$

$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>\mathrm{Ar}$

Correct order of bond angle in given species is :

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{PCl}}_3>{\mathrm{NCl}}_3>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{NCl}}_3>{\mathrm{PCl}}_3>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{H}}_2\mathrm{Te}>{\mathrm{SbH}}_3>{\mathrm{PCl}}_3>{\mathrm{NCl}}_3$

$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>{\mathrm{NCl}}_3>{\mathrm{PCl}}_3><mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

The incorrect order is:

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>\mathrm{N}>\mathrm{P}>\mathrm{As}\mathbf{\hspace{0.17em}}\mathbf{:}<mspace\; width="1em"></mspace>\mathrm{Strength}<mspace\; width="1em"></mspace>\mathrm{of}<mspace\; width="1em"></mspace>\mathrm{\pi }‐\mathrm{bond}<mspace\; width="1em"></mspace>\mathrm{with}<mspace\; width="1em"></mspace>\mathrm{oxygen}<mspace\; width="1em"></mspace>\mathrm{atom}$

$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>{\mathrm{SiF}}_4>{\mathrm{SiCl}}_4>{\mathrm{SiBr}}_4>{\mathrm{Sil}}_4<mspace\; width="1em"></mspace>\mathbf{:}\mathbf{\hspace{0.17em}}\mathrm{Thermal}<mspace\; width="1em"></mspace>\mathrm{stability}$

$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>{\mathrm{H}}_2\mathrm{S}>{\mathrm{H}}_2\mathrm{Se}>{\mathrm{H}}_2\mathrm{Te}<mspace\; width="1em"></mspace>\mathbf{:}\mathbf{\hspace{0.17em}}\mathrm{Arrhenious}<mspace\; width="1em"></mspace>\mathrm{acid}<mspace\; width="1em"></mspace>\mathrm{character}$

$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>{\mathrm{CaBr}}_2>{\mathrm{MgBr}}_2>{\mathrm{BeBr}}_2<mspace\; width="1em"></mspace>\mathbf{:}\mathbf{\hspace{0.17em}}\mathrm{Melting}<mspace\; width="1em"></mspace>\mathrm{point}$

Among the following cyclic species are :

$\left(\mathrm{I}\right)<mspace\; width="1em"></mspace>{\mathrm{H}}_5{\mathrm{P}}_3{\mathrm{O}}_{10}<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>\left(\mathrm{II}\right)<mspace\; width="1em"></mspace>{\left[{\mathrm{B}}_3{\mathrm{O}}_3{\left(\mathrm{OH}\right)}_5\right]}^{2-}<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>\left(\mathrm{III}\right)<mspace\; width="1em"></mspace>{\mathrm{H}}_5{\mathrm{P}}_5{\mathrm{O}}_{15}<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>\left(\mathrm{IV}\right)<mspace\; width="1em"></mspace>{\mathrm{P}}_3{\mathrm{N}}_3{\mathrm{Cl}}_6$

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>\mathrm{I},<mspace\; width="1em"></mspace>\mathrm{III}$

$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>\mathrm{I},<mspace\; width="1em"></mspace>\mathrm{III},<mspace\; width="1em"></mspace>\mathrm{IV}$

$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>\mathrm{II},<mspace\; width="1em"></mspace>\mathrm{III},<mspace\; width="1em"></mspace>\mathrm{IV}<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>$

$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>\mathrm{I},<mspace\; width="1em"></mspace>\mathrm{II},<mspace\; width="1em"></mspace>\mathrm{III},<mspace\; width="1em"></mspace>\mathrm{IV}$

$HCN+H_{2}O\to \left[X\right]+N{H}_3$

$\left[X\right]\stackrel{∆}{\to }\left[Y\right]+H_{2}O$

(Unbalanced equations)

[Y] May be prepared by which one of the following methods?

[A] By dehydration of malonic acid with $P_2{O}_5$

[B] By thermal decomposition of carbon sub-oxide in air.

[C] By heating potassium hyxacyaanoferrate (II) with conic $H_{2}S{O}_4$

[D] By the action of conc. $HN{O}_3$ on charcoal  

Select the correct statement about elements of group ${15}^{th}$.

(A) The order of stability of oxidation state for +3 is $B{i}^{3+}>S{b}^{3+}>A{s}^{3+}$ and for +5 is $B{i}^{5+}<S{b}^{5+}<A{s}^{5+}$

(B) In the case of nitrogen, all oxidation states from +1 to +4 tend to disproportionate in acid solution.

(C) There is considerable increase in covalent radius from N to P but from As to Bi only a small increase in covalent radius is observed.

(D) All of these.

Which of the following compounds does not give nitrogen on heating?

(1) $Na{N}_3$                                                     

(2) ${\left(N{H}_4\right)}_{2}S{O}_4$

(3) $N{H}_{4}N{O}_2$                                               

(4) $\left(N{H}_4\right)2C{r}_2{O}_7$

A brown-coloured mixture of two gases is obtained by reducing 6 N nitric acid with metallic copper. This mixture on cooling condenses to a blue liquid which on freezing (-30 ^oC) gives a blue solid. The correct statement for the blue liquid or solid is: