Q. No.| Assertion (A): | R3P=O exists but R3N=O does not where R= alkyl group). |
| Reason (R): | Nitrogen doesn't have d orbitals. |
Select the correct option:
| 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 |
| 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 |
The 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.
In which compound does phosphorous have the lowest oxidation state?
1. H3PO3
2. PCl3
3. Ca3P2
4. POF3
Arrange the following compounds in increasing order of their acidity:
HF, HCl, HBr, HI
1. HCl < HBr < HI<HF
2. HF < HCl < HI< HBr
3. HF < HCl < HBr < HI
4. HF< HBr < HI< HCl
The correct statement(s) regarding group 15 elements is/(are):
| 1. | The stability of +5 oxidation state decreases down a group. |
| 2. | The stability of +3 oxidation state decreases down the group. |
| 3. | First ionization energy decreases on moving down a group. |
| 4. | Both (1) and (3) |
| 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 |
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
Number 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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