The element from group 15 that forms a strong bond with hydrogen is:

1. N 2. P
3. As 4. Sb
Subtopic:  Group 15 - Preparation, Properties & Uses |
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PH3 forms bubbles when passed slowly through water but NH3 gets dissolved in water, because: 

1. NH3 forms an H-bond with water, so it is soluble but PH3 does not form an H-bond.
2. NH3 does not form an H-bond with water, so it is soluble but PH3 does form an H-bond.
3. NH3 and PHboth form H-bond with water. 
4. NH3 and PHboth do not form H-bond with water.

Subtopic:  Group 15 - Preparation, Properties & Uses |
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The bonding present in nitrogen molecules is:
1. \(p\pi-p\pi\)
2. \(p\pi-d\pi\)
3. \(d\pi-d\pi\)
4. Only sigma bond

Subtopic:  Group 15 - Preparation, Properties & Uses |
 93%
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An element that does not have a d-orbital is:

1. P 2. N
3. As 4. Bi
Subtopic:  Group 15 - Preparation, Properties & Uses |
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NH3 forms a hydrogen bond but PH3 does not because:  

1. Phosphorus is more electronegative as compared to nitrogen.
2. Nitrogen is more electronegative as compared to phosphorus.
3. Nitrogen and phosphorous have equal electronegativity.
4. Nitrogen is more stable as compared to phosphorus.

Subtopic:  Group 15 - Preparation, Properties & Uses |
 90%
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Match the name of process given in column I with the name of compound given in
column II and mark the correct option.

(a) Pure nitrogen (i) Chlorine
(b) Haber process (ii) Sulphuric acid
(c) Contact process (iii) Ammonia
(d) Deacon's process (iv) Sodium azide or Barium azide
 
(a) (b) (c) (d)
1. (iv) (iii) (ii) (i)
2. (i) (ii) (iii) (iv)
3. (ii) (iv) (i) (iii)
4. (iii) (iv) (ii) (i)
Subtopic:  Group 15 - Preparation, Properties & Uses |
 88%
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NEET - 2019
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 Match the formulas of oxides given in Column I with the type of oxide given in Column II and mark the correct option.

Column I Column II
A.  Pb3O4 1. Neutral oxide
B.  N2O 2. Acidic oxide
C.  Mn2O7 3. Basic oxide
D.  Bi2O3 4. Mixed oxide

Codes

A B C D
1. 1 2 3 4
2. 4 1 2 3
3. 3 2 4 1
4. 4 3 1 2
Subtopic:  Group 15 - Preparation, Properties & Uses |
 84%
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The respective oxidation states of P in H4P2O5, H4P2O6, and H4P2O7 are: 

1. +3, +5, and +4 2. +5, +3, and +4
3. +5, +4, and +3 4. +3, +4, and +5
Subtopic:  Group 15 - Preparation, Properties & Uses |
 86%
From NCERT
AIPMT - 2010
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A balanced chemical equation for the reaction showing catalytic oxidation of NH3 by atmospheric oxygen is:

1. 4NH3 + \(\underset{\text{From air}}{5O_2} \)   \(\xrightarrow[\text{500 K; 9 bar}]{\text{Pt / Rh gauge catalyst}}\)   4NO + 6H2O
2. 3NH4 + \(\underset{\text{From air}}{5O_2} \)  \(\xrightarrow[\text{500 K; 9 bar}]{\text{Pt / Rh gauge catalyst}}\)  3NO + 6H2O
3. 4NH3 + \(\underset{\text{From air}}{5O_2} \)  \(\xrightarrow[\text{cold}]{\text{no catalyst}}\)  4NO + 6H2O
4. 3NH4 + \(\underset{\text{From air}}{5O_2} \)  \(\xrightarrow[\text{cold}]{\text{no catalyst}}\)  3NO + 6H2O
Subtopic:  Group 15 - Preparation, Properties & Uses |
 84%
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An element belongs to group 15 and 3rd period of the periodic table. Its electronic configuration would be:
1. \(\mathrm{1 s^2 2 s^2 2 p^4} \)
2. \(\mathrm{1 s^2 2 s^2 2 p^3} \)
3. \(\mathrm{1 s^2 2 s^2 2 p^6 3 s^2 3 p^2} \)
4. \(\mathrm{1 s^2 2 s^2 2 p^6 3 s^2 3 p^3}\)

Subtopic:  Group 15 - Preparation, Properties & Uses |
 82%
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