Which of the following is an uncommon hydrolysis product of XeF2 and XeF4?

(a) Xe

(b) XeO3

(c) HF

(d) O2

 

Subtopic:  Group 18 - Preparation, Properties & Uses |
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SbF5 reacts with XeF4 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

Subtopic:  Group 18 - Preparation, Properties & Uses |
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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) XeF6 can undergo partial hydrolysis

Subtopic:  Group 18 - Preparation, Properties & Uses |
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Which of the following noble gas does not form clathrate compound?

(a) Kr

(b) Ne

(c) Xe

(d) Ar

Subtopic:  Group 18 - Preparation, Properties & Uses |
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Hints

Correct order of bond angle in given species is :

(a) SiO44->PCl3>NCl3>SbH3>H2Te

(b) SiO44->NCl3>PCl3>SbH3>H2Te

(c) SiO44->H2Te>SbH3>PCl3>NCl3

(d) NCl3>PCl3> SiO44->SbH3>H2Te

Subtopic:  Group 16 - Preparation, Properties & Uses |
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The incorrect order is:

(a) N>P>As : Strength of πbond with oxygen atom

(b) SiF4>SiCl4>SiBr4>Sil4 : Thermal stability

(c) H2S>H2Se>H2Te : Arrhenious acid character

(d) CaBr2>MgBr2>BeBr2 : Melting point

Subtopic:  Group 16 - Preparation, Properties & Uses |
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Among the following cyclic species are :

(I) H5P3O10           (II) B3O3OH52-            (III) H5P5O15            (IV) P3N3Cl6

(a) I, III

(b) I, III, IV

(c) II, III, IV                                                  

(d) I, II, III, IV

 

Subtopic:  Group 15 - Preparation, Properties & Uses |
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HCN+H2OX+NH3

XY+H2O

(Unbalanced equations)

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

[A] By dehydration of malonic acid with P2O5

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

[C] By heating potassium hyxacyaanoferrate (II) with conic H2SO4

[D] By the action of conc. HNO3 on charcoal  

Subtopic:  Group 15 - Preparation, Properties & Uses |
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Select the correct statement about elements of group 15th.

(A) The order of stability of oxidation state for +3 is Bi3+>Sb3+>As3+ and for +5 is Bi5+<Sb5+<As5+

(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.

Subtopic:  Group 15 - Preparation, Properties & Uses |
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Which of the following compounds does not give nitrogen on heating?

(1) NaN3                                                     

(2) NH42SO4

(3) NH4NO2                                               

(4) NH42Cr2O7

Subtopic:  Group 15 - Preparation, Properties & Uses |
 70%
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