Match Column-I with Column-II.
| Column-I | Column-II | ||
| (a) | Copper | (i) | Non-metal |
| (b) | Fluorine | (ii) | Transition metal |
| (c) | Silicon | (iii) | Lanthanoid |
| (d) | Cerium | (iv) | Metalloid |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iv) | (i) | (iii) |
| 2. | (ii) | (i) | (iv) | (iii) |
| 3. | (iv) | (iii) | (i) | (ii) |
| 4. | (i) | (ii) | (iii) | (iv) |
Which of the following is a free radical substitution reaction?
1. Benzene with Br2/AlCl3
2. Acetylene with HBr
3. Methane with Br2/hv
4. Propene with HBr/(C6H5COO)2
The reaction of concentrated sulphuric acid with carbohydrates (C12H22O11) is an example of:
1. Dehydration
2. Oxidation
3. Reduction
4. Sulphonation
Match the compounds of Xe in Column I with the molecular structure in Column II.
| Column-I | Column-II | ||
| (a) | XeF2 | (i) | Square planar |
| (b) | XeF4 | (ii) | Linear |
| (c) | XeO3 | (iii) | Square pyramidal |
| (d) | XeOF4 | (iv) | Pyramidal |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iii) | (iv) |
| 2. | (ii) | (iv) | (iii) | (i) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4. | (ii) | (i) | (iv) | (iii) |
The half-life for a zero-order reaction having 0.02 M initial concentration of reactant is 100 s. The rate constant (in mol L–1 s–1) for the reaction is:
1.
2.
3.
4.
Identify the incorrect statement from the following:
| 1. | Zirconium and Hafnium have identical radii of 160 pm and 159 pm, respectively as a consequence of lanthanoid contraction. |
| 2. | Lanthanoids reveal only +3 oxidation state. |
| 3. | The lanthanoid ions other than the f0 type and the f14 type are all paramagnetic. |
| 4. | The overall decrease in atomic and ionic radii from lanthanum to lutetium is called lanthanoid contraction. |
Match the following aspects with the respective metal:
| Aspects | Metal | ||
| (a) | The metal that reveals the maximum number of oxidation states | (i) | Scandium |
| (b) | The metal, although placed in a 3d block, is not considered a transition element | (ii) | Copper |
| (c) | The metal that does not exhibit variable oxidation states | (iii) | Manganese |
| (d) | The metal, which is in +1 oxidation state in aqueous solution, undergoes disproportionation | (iv) | Zinc |
Select the correct option:
| Options: | (a) | (b) | (c) | (d) |
| 1. | (i) | (iv) | (ii) | (iii) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (iii) | (i) | (iv) | (ii) |
| 4. | (ii) | (iv) | (i) | (iii) |
If 8 g of a non-electrolyte solute is dissolved in 114 g of n-octane to reduce its vapor pressure to 80 %, the molar mass (in g mol–1) of the solute is:
[Molar mass of n-octane is 114 g mol–1]
| 1. | 40 | 2. | 60 |
| 3. | 80 | 4. | 20 |
Match the coordination number and type of hybridization with the distribution of hybrid orbitals in space based on Valence bond theory.
| Coordination number and type of hybridisation | Distribution of hybrid orbitals in space | ||
| (a) | 4, sp3 | (i) | Trigonal bipyramidal |
| (b) | 4, dsp2 | (ii) | Octahedral |
| (c) | 5, sp3d | (iii) | Tetrahedral |
| (d) | 6, d2sp3 | (iv) | Square planar |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iii) | (iv) | (i) |
| 2. | (iii) | (iv) | (i) | (ii) |
| 3. | (iv) | (i) | (ii) | (iii) |
| 4. | (iii) | (i) | (iv) | (ii) |
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