A+H2OB+HCl
B+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

Subtopic:  Group 15 - Preparation, Properties & Uses |
 60%
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Which of the following is in the correct sequence?

[For the correct order mark (T) and for the incorrect order mark (F)]:

(a) Lewis acidity order SiFSiClSiBrSiI4
(b) Melting point NHSbHAsHPH3
(c) Boiling point NHSbHAsHPH3
(d) Dipole moment order NHSbHAsHPH3
 
(a) (b) (c) (d)
1. F T F T
2. T F T F
3. F F T T
4. F F T F
Subtopic:  Group 15 - Preparation, Properties & Uses |
 53%
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Incorrect statement regarding PH3 is:

1. It is produced by the hydrolysis of Ca3P2

2. It gives a black ppt, Cu3P2 with a CuSO4 solution.

3. It spontaneously burns in the presence of P2H4

4. It does not react with B2H6

Subtopic:  Group 15 - Preparation, Properties & Uses |
 61%
From NCERT
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Which of the following compound does not produce oxyacid of central atom on hydrolysis?

(1) BF3                           

(2) NCl3

(3) SF4                           

(4) PCl5

Subtopic:  Group 15 - Preparation, Properties & Uses |
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The false statement regarding hydrides from the 15th group is:

1. NH> PH> AsH> SbH> BiH3 Thermal stability
2. N-H > P-H > As-H > Sb-H > Bi-H E-H bond dissociation enthalpy
3. NH> PH> AsH> SbH> BiH3 Reducing character
4. NH> PH> AsH> SbH> BiH3 Basicity

Subtopic:  Group 15 - Preparation, Properties & Uses |
 76%
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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

Subtopic:  Group 15 - Preparation, Properties & Uses |
 55%
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The correct order of SS bond length in the following oxyanion is :

(I) S2O42-                  (II) S2O52-                      (III) S2O62-

(a) I>II>III                                      (b) I>III>II

(c) III>II>I                                       (d) III>I>II

Subtopic:  Group 16 - Preparation, Properties & Uses |
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In which of the following reaction product does not contain 'Peroxy' linkage?

1. 2OFDimerisation  

2. H4P2O8+H2O

3. 2Naexcess O2   

4. None of these 

Subtopic:  Group 16 - Preparation, Properties & Uses |
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Consider the following statements in respect of oxides of sulphur.

(1) In gas phase SO2 molecule is V-shape.

(2) In gas phase SO3 molecule is planar.

(3) ySO3 is cyclic trimer.

Which of the above statements are correct ?

(1) 1 and 2 only                             

(2) 2 and 3 only

(3) 1 and 3 only                             

(4) 1, 2 and 3

Subtopic:  Group 16 - Preparation, Properties & Uses |
 57%
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The gas that cannot be collected over water is:

1. N2                                   

2. O2

3. SO2                                 

4. PH3

Subtopic:  Group 16 - Preparation, Properties & Uses |
From NCERT
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To view explanation, please take trial in the course.
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