Q. No.| Assertion (A): | R3P = O exists but R3N = O does not (R = alkyl group). |
| Reason (R): | Nitrogen doesn't have d orbitals. |
| 1. | (A) is true and (R) is the correct explanation of (A). |
| 2. | (A) is true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| Assertion (A) | Nitrogen exists as a diatomic molecule and phosphorus as P4. |
| Reason (R) | Phosphorus is smaller in size, so it can form P4. |
| 1. | (A) is true and (R) is the correct explanation of (A). |
| 2. | (A) is true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe disproportionation reaction of is as follows:
X and Y in the above reaction are:
1. H3PO2, HPO2
2. H3PO4, PH3
3. H2PO6, PO3
4. None of the above.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| Assertion (A): | Phosphorous (V) has a tendency to only gain electrons as it is in its highest oxidation state |
| Reason (R): | PCl5 can act as an oxidizing as well as a reducing agent. |
| 1. | (A) is true and (R) is the correct explanation of (A). |
| 2. | (A) is true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe correct increasing order of basic strength of hydrides:
1. BiH3 \(\simeq \) SbH3 < AsH3 < PH3 < NH3
2. BiH3 > NH3 > PH3 > SbH3 > AsH3
3. SbH3 < AsH3 < PH3 < NH3 < BiH3
4. AsH3 > NH3 > PH3 > SbH3 > BiH3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is true about reactivity of group 15 elements?
1. Stability of their hydrides increases down the group.
2. Higher oxides are acidic in nature.
3. All elements form pentahalides.
4. They do not react with metals.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe element from group 15 that forms a strong bond with hydrogen is:
| 1. | N | 2. | P |
| 3. | As | 4. | Sb |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe condition that does not exist in the Haber process
for the manufacturing of ammonia is:
1. Pressure (around 200 ×105 Pa)
2. Temperature (700 K)
3. Catalyst such as iron oxide.
4. Presence of inert gases.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyNumber of moles of copper used when
(i) Copper reacts with dilute nitric acid
(ii) Copper reacts with concentrated nitric acid
are respectively:-
1. 1,1
2. 1,3
3. 3,1
4. 3,3
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
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