The most acidic compound among the following is:
1. | 2. | ||
3. | 4. |
Mark the correct increasing order of basic strength of given molecules:
(I) | (II) | (III) |
1. III < I < II
2. III < II < I
3. II < I < III
4. II < III < I
Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field?
1. K
2. Rb
3. Li
4. Na
The most suitable method used for the separation of 1:1 mixture of ortho and para-nitrophenols is:
1. | Chromatography | 2. | Crystallization |
3. | Steam distillation | 4. | Sublimation |
HgCl2 and I2 both, when dissolved in water containing ions the pair of species formed is:
1.
2.
3.
4.
Mixture of chloroxylenol and terpineol acts as:
1. Antiseptic
2. Antipyretic
3. Antibiotic
4. Analgesic
An example of a sigma bonded organometallic compound is:
1. Grignard's reagent
2. Ferrocene
3. Cobaltocene
4. Ruthenocene
A first-order reaction has a specific reaction rate of 10–2 sec–1. How much time will it take for 20 g of the reactant to reduce to 5 g?
1. | 138.6 sec | 2. | 346.5 sec |
3. | 693.0 sec | 4. | 238.6 sec |
Column-I | Column-II | ||
(A) | XX’ | (i) | T-shape |
(B) | XX’3 | (ii) | Pentagonal bipyramidal |
(C) | XX’5 | (iii) | Linear |
(D) | XX’7 | (iv) | Square Pyramidal |
(A) | (B) | (C) | (D) | |
1. | (iii) | (i) | (iv) | (ii) |
2. | (i) | (iv) | (iii) | (ii) |
3. | (iv) | (iii) | (ii) | (i) |
4. | (iii) | (iv) | (i) | (ii) |
The concentration of Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 × 10–4 mol L–1.
The solubility product of Ag2C2O4 is:
1. | 2.66×10–12 | 2. | 4.5×10–11 |
3. | 5.3×10–12 | 4. | 2.42×10–8 |