1. 0 and 2, respectively
2. 1 and 0, respectively
3. 3 and 0, respectively
4. 0 and 1, respectively
Identify the correct statement from the following:
| 1. | The correct order of hydration enthalpies of alkaline earth cations is Be2+ < Mg2+ < Ca2+ < Sr2+ < Ba2+ |
| 2. | Lithium and Magnesium show some similarities in their physical properties as they are diagonally placed in the periodic table. |
| 3. | Lithium is softer among all alkali metals. |
| 4. | Lithium chloride is deliquescent and crystallizes as a hydrate, LiCl·6H2O. |
Deficiency of which vitamin causes osteomalacia ?
| 1. | Vitamin A | 2. | Vitamin D |
| 3. | Vitamin K | 4. | Vitamin E |
| List-I Molecule |
List-II Shape or geometry of the molecule |
|
| a. | PCl5 | Trigonal planar |
| b. | SF6 | Octahedral |
| c. | BeCl2 | Linear |
| d. | NH3 | Trigonal pyramidal |
Identify the wrong match from the given pairs:
| 1. | b | 2. | c |
| 3. | d | 4. | a |
Identify Z in the following reaction:
\(CH_3CH_2CH=CH_2 \xrightarrow[H_2O,\ H_2O_2,\ OH^-]{B_2H_6} Z \)
| 1. | \(CH_3CH_2CH_2CH_2OH\) | 2. | \(CH_3CH_2 \ C \ HCH_3 \\~~~~~~~~~~~~~~~~~~| \\~~~~~~~~~~~~~~~~OH\) |
| 3. | \(CH_3CH_2CH_2CHO \) | 4. | \(CH_3CH_2CH_2CH_3 \) |
From the following, identify the reaction having the top position in the EMF series (standard reduction potential) according to their electrode potential at 298 K.
| 1. | Mg2++ 2e– → Mg(s) | 2. | Fe2+ + 2e– → Fe(s) |
| 3. | Au3++ 3e– → Au(s) | 4. | K++ 1e – → K(s) |
Match the elements in Column I with methods of purification in Column II.
| Column I | Column II | ||
| (a) | Boron | (i) | Van Arkel method |
| (b) | Tin | (ii) | Mond's process |
| (c) | Zirconium | (iii) | Liquation |
| (d) | Nickel | (iv) | Zone refining |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iv) | (iii) | (i) | (ii) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (ii) | (i) | (iv) | (iii) |
| 4. | (iii) | (iv) | (i) | (ii) |
Which of the following salt solutions is basic in nature?
| 1. | Ammonium chloride. | 2. | Ammonium sulphate. |
| 3. | Ammonium nitrate. | 4. | Sodium acetate. |
In which of the sols, the colloidal particles are with a negative charge?
1. TiO2
2. Hemoglobin
3. Starch
4. Hydrated Al2O3
An acid that forms an anhydride (X) on heating and an acid imide (Y) on strong heating with ammonia is:
| 1. |  |
2. |  |
| 3. |  |
4. |  |
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