Phosphorous reacts with chlorine gas to give a colorless liquid. which fumes in moist air to produce HCl and

1.  POCl3

2.  H3PO3

3.  PH3

4.  H3PO4

Subtopic:  Group 15 - Preparation, Properties & Uses |
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Ammonia is NOT produced in the reaction of

1.  NH4Cl with KOH

2.  AIN with water

3.  NH4Cl with NaNO2

4.  NH4Cl with CaOH2

Subtopic:  Group 15 - Preparation, Properties & Uses |
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NO2 is the anhydride of

1. HNO3

2. HNO2

3. HNO3 + HNO2

4. None of the above

Subtopic:  Group 15 - Preparation, Properties & Uses |
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Which is not hydrolysed with water?

1. PCl3

2. NF3

3. NCl3

4. BCl3

Subtopic:  Group 15 - Preparation, Properties & Uses |
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When PCl3 is hydrolysed then oxyacid of phosphorous is obtained. The basicity of oxyacid is

1. One    

2. Two

3. Three

4. Four

Subtopic:  Group 15 - Preparation, Properties & Uses |
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Which set of oxide of nitrogen is paramagnetic in nature?

1. NO, N2O

2. NO2, NO, N2O

3. NO, NO2

4. NO2N2O

Subtopic:  Group 15 - Preparation, Properties & Uses |
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Correct order of boiling point of group 16 hydrides is

1. H2O < H2S < H2Se < H2Te

2. H2Te < H2Se < H2S < H2O

3. H2S < H2Se < H2Te < H2O

4. H2O < H2Te < H2Se < H2S

Subtopic:  Group 16 - Preparation, Properties & Uses |
 69%
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S – S bond is present in

1. H2S2O7

2. H2S2O8

3. H2SO5

4. H2S2O6

Subtopic:  Group 16 - Preparation, Properties & Uses |
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Which is incorrectly given according to the order indicated?

(1) F2 > Cl2 > Br2 > I (Oxidising Power)

(2) HI >HBr > HCl > HF (Acidic Strength)

(3) F2 > Cl2 > Br2 > I2 (Bond Energy)

(4) HF > HI > HBr > HCl (Boiling Point)

Subtopic:  Group 17 - Preparation, Properties & Uses |
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The correct order of acidic strength of oxyacids of phosphorous is

(1) H3PO2 > H3PO3  > H3PO4

(2) H3PO4 > H3PO3  > H3PO2

(3) H3PO3 > H3PO2  > H3PO4

(4) H3PO2 > H3PO4  > H3PO3

Subtopic:  Group 16 - Preparation, Properties & Uses |
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