Among  the following oxoacids of phosphorus ,the strongest reducing property is for:

1. H4P2O7

2. H3PO3

3. H3PO2

4. H3PO4

Subtopic:  Group 15 - Preparation, Properties & Uses |
 66%
From NCERT
NEET - 2019
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Identify the correct formula of 'oleum' from the following

1. H2S2O7

2. H2SO3

3. H2SO4

4. H2S2O8

Subtopic:  Group 16 - Preparation, Properties & Uses |
 87%
From NCERT
NEET - 2019
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Which element from pπ- multiple bonds with itself and with carbon and oxygen?

1.  P, As

2.  N, As

3.  N, P

4.  N

Subtopic:  Group 15 - Preparation, Properties & Uses |
 72%
From NCERT
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A compound "X", upon reaction with H2O, produces a colourless gas "Y" with a rotten fish smell.  Gas 'Y' is absorbed in a solution of CuSO4 to give Cu3P2 as one of the products. The compound 'X' will be:

1. Ca3P2

2. NH4Cl

3. As2O3

4. Ca3(PO4)2

Subtopic:  Group 15 - Preparation, Properties & Uses |
 71%
From NCERT
NEET - 2019
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Which hydride has the lowest boiling point?

1. H2O

2. H2S

3. H2Se

4. H2Te

Subtopic:  Group 16 - Preparation, Properties & Uses |
 68%
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SO2+H2Sproduct. The final product will be:

1. H2O+S

2. H2SO4

3. H2SO3

4. H2S2O3

Subtopic:  Group 16 - Preparation, Properties & Uses |
 50%
From NCERT
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On passing H2S through the acidified FeCl3 solution, FeCl3 is converted into:

(1) FeCl2

(2) Fe2(SO4)3

(3) FeS

(4) FeSO4

Subtopic:  Group 17 - Preparation, Properties & Uses | Group 16 - Preparation, Properties & Uses |
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Which does not give ammonia with water?

1. Mg3N2

2. AlN

3. CaCN2

4. Ca(CN)2

Subtopic:  Group 15 - Preparation, Properties & Uses |
 51%
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The hydride that possesses the maximum complex formation nature is:

1. NH3

2. PH3

3. BiH3

4. SbH3

Subtopic:  Group 15 - Preparation, Properties & Uses |
 62%
From NCERT
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Non-combustible hydride is:

(1) PH3

(2) AsH3

(3) SbH3

(4) NH3

Subtopic:  Group 15 - Preparation, Properties & Uses |
 63%
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