Consider the following sequence of reaction.

Na+NH3(g)XN2OYHeatZGas Pure

Identify [Z] gas :

(a) N2

(b) NH3

(c) O2

(d) H2

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Among the following statement which one is true?

(a) NH3 is less soluble than PH3 in water

(b) NH3 is stronger base and stronger reducing agent than PH3

(c) NH3 has higher boiling point than PH3 and has lower melting point than PH3

(d) PH3 is stronger reducing agent than NH3 and it has lower melting critical 

      temperature than NH3

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Which of the following on heating produces NO2?

(a) NaNO3                               (b) AgNO3

(c) NH4NO3                              (d) NH4NO2

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A+H2OB+HClB+H2OC+HCl

Compound (A),(B) and (C) will be respectively :

(a) PCl5, POCl3, H3PO3                 (b) PCl5, POCl3, H3PO4

(c) SOCl2, POCl3, H3PO3               (d) PCl3, POCl3, H3PO4

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Which of the correct sequence in the following properties? For the correct order mark (T) and for the incorrect order mark (F) :

(a)  Lewis acidity order : SiF4<SiCl4<SiBr4<SiI4 

(b) Melting point : NH3>SbH3>AsH3>PH3

(c) Boiling point : NH3>SbH3>AsH3>PH3

(d) Dipole moment order : NH3>SbH3>AsH3>PH3

(a) FTFT        (b) TFTF        (c) FFTT         (d) FFTF

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In which of the following compounds hydrolysis takes place through SN1 and SN2 mechanism respectively?

(a) NF3, NCl3                        (b) P4O10, SiCl4

(c) SF4, TeF6                         (d) SiCl4, SiF4 

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Incorrect statement about PH3 is :

(a) It is produced by hydrolysis of Ca3P2

(b) It gives black ppt,(Cu3P2) with CuSO4 solution

(c) Spontaneously burns in presence of P2H4

(d) It does not react with B2H6

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Which of the following compound does not produce oxyacid of central atom on hydrolysis?

(a) BF3                            (b) NCl3

(c) SF4                            (d) PCl5

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The incorrect statement regarding 15th group hydrides (EH3)E=N, P, As, Sb, Bi

(a) NH3>PH3>AsH3>SbH3>BiH3 : Thermal stability

(b) N-H>P-H>As-H>Sb-H>Bi-H : E-H bond dissociation enthalpy

(c) NH3>PH3>AsH3>SbH3>BiH3 : Reducing character

(d) NH3>PH3>AsH3>SbH3>BiH3 : Basicity

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A non-metal M forms MCl3, M2O5 and Mg3M2 but does not form MI5. Then incorrect statement regarding non-metal M is:

(a) M can form multiple bond

(b) M is of second period element 

(c) Atomicity of non-metal is 4

(d) The range of oxidation number for M is +5 to -3

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