The oxidation state of the central atom in the anion of the compound will be-
1. +3
2. +5
3. +1
4. -3
Which of the following is not tetrahedral in shape?
Which of the following are peroxoacids of sulphur?
Hot conc. acts as moderately strong oxidising agent. It oxidises both metals and non-metals. Which of the following element is oxidised by conc. into two gaseous products?
1. Cu
2. S
3. C
4. Zn
A black compound of manganese reacts with a halogen acid to give greenish-yellow gas. When an excess of this gas reacts with an unstable trihalide is formed. In this process, the oxidation state of nitrogen changes from-
1. -3 to +3
2. -3 to 0
3. -3 to +5
4. 0 to -3
In the preparation of compounds of Xe, Bartlett had taken as a base compound. This is because:
1. | Both O2 and Xe have the same size. |
2. | Both O2 and Xe have the same electron gain enthalpy. |
3. | Both O2 and Xe have almost the same ionisation enthalpy. |
4. | Both Xe and O2 are gases. |
In solid-state, PCl5 exists as:
1. | Covalent solid. |
2. | Octahedral structure. |
3. | Ionic solid with [PCl6]+ octahedral and [PCl4]- tetrahedral. |
4. | Ionic solid with [PCl4]+ tetrahedral and [PCl6]- octahedral. |
Reduction potentials of some ions are given below. Arrange them in decreasing order of oxidising power.
Ion |
|||
Reduction potential E- /V |
= 1.19V |
= 1.65V |
= 1.74V |
If chlorine gas is passed through a hot NaOH solution, two changes are observed in the oxidation number of chlorine during the reaction. These are ......... and .............
a. 0 to +5
b. 0 to +3
c. 0 to -1
d. 0 to +1
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (a, c)
Which of the following is correct for P4 molecule of white phosphorus?
a. It has 6 lone pairs of electrons
b. It has six P — P single bonds
c. It has three P — P single bonds
d. It has four lone pairs of electrons
Choose the correct option
1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)