Identify the correct statement about ClF3 from the following options :
| 1. | It has T-shaped geometry with three lone pairs on Cl atom. |
| 2. | It has a planar trigonal geometry with two lone pairs on Cl atom. |
| 3. | It has T-shaped geometry with two lone pairs on Cl atom. |
| 4. | It has a trigonal pyramidal geometry with two lone pairs on Cl atom. |
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The functional group that can be identified through phthalein dye test is :
1. Alcohol
2. Aldehyde
3. Phenolic
4. Carboxylic acid
1. Alcohol
2. Aldehyde
3. Phenolic
4. Carboxylic acid
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A solution of copper sulphate is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at cathode is:
(Given : Molar mass of Cu = 63 g mol-1; 1 F = 96487 C mol-1)
1. 0.2938 g
2. 1.7018 g
3. 2.4036 g
4. 0.5876 g
(Given : Molar mass of Cu = 63 g mol-1; 1 F = 96487 C mol-1)
1. 0.2938 g
2. 1.7018 g
3. 2.4036 g
4. 0.5876 g
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Match List I with List II :
Choose the correct answer from the options given below :
(1) A-III, B-I, C-IV, D-II
(2) A-III, B-IV, C-I, D-II
(3) A-IV, B-I, C-III, D-II
(4) A-II, B-I, C-IV, D-III
| List I (Transition metal/compound/complex) | List II (Catalytic Role) | ||
| (a) \(V_2O_5\) | (i) Preparation of ammonia from \(N_2/H_2\) mixture | ||
| (b) \(Fe\) | (ii) Polymerisation of alkynes | ||
| (c) \(pdCI_2\) | (iii) Preparation of \(H_2SO_4\) from \(SO_2\) | ||
| (d) \(Ni \) complex | (iv) Oxidation of ethyne to ethanal | - | |
(1) A-III, B-I, C-IV, D-II
(2) A-III, B-IV, C-I, D-II
(3) A-IV, B-I, C-III, D-II
(4) A-II, B-I, C-IV, D-III
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| List I (Complex/ ion) |
List II (Shape/geometry) |
||
| A. | \([Pt(Cl_2)(NH_3)_2]\) | I. | Octahedral |
| B. | \([Co(NH_3)_6]Cl_3\) | II. | Trigonal bipyramidal |
| C. | \([NiCl_4]^{2-}\) | III. | Square planar |
| D. | \([Fe(CO)_5]\) | IV. | Tetrahedral |
1. A-IV, B-I, C-III, D-II
2. A-III, B-IV, C-I, D-II
3. A-I, B-III, C-IV, D-II
4. A-III, B-I, C-IV, D-II
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Identify the incorrect statement from the following:
| 1. | The IUPAC name of the element with atomic number 107 is Unnilseptium. |
| 2. | The oxidation state and covalency of \(\text{Al}\) in \([\text{AlCl}(\text{H}_2\text{O})_5]^{2+}\) are 3 and 6 respectively. |
| 3. | The largest and the smallest species among \(\text{Mg}\), \(\text{Mg}^{2+}\), \(\text{Al}\) and \(\text{Al}^{3+}\) are \(\text{Al}\) and \(\text{Mg}^{2+}\), respectively. |
| 4. | The similarity in behaviour of \(\text{Li}\) with \(\text{Mg}\) is referred to as 'diagonal relationship'. |
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Given below is an expression for the rate constant of a first order reaction occurring at a certain temperature, T(K).
\(\ln k = 14\cdot34 - \frac{1\cdot25 \times 10^4}{T}\)
The energy of activation in kcal mol-1 for the reaction is :
(Given : k in \(s^{-1}, R = 1.987 ~\text{cal mol}^{-1} K^{-1})\)
1. 12.42
2. 14.34
3. 18.63
4. 24.84
\(\ln k = 14\cdot34 - \frac{1\cdot25 \times 10^4}{T}\)
The energy of activation in kcal mol-1 for the reaction is :
(Given : k in \(s^{-1}, R = 1.987 ~\text{cal mol}^{-1} K^{-1})\)
1. 12.42
2. 14.34
3. 18.63
4. 24.84
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Phenolphthalein is used as an indicator for the titration of sodium hydroxide solution against a standard solution of oxalic acid. The colour change that is observed at an alkaline pH close to the equivalence point during this titration is:
1. colourless to pink
2. pinkish red to yellow
3. pink to colourless
4. yellow to pinkish red
1. colourless to pink
2. pinkish red to yellow
3. pink to colourless
4. yellow to pinkish red
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Methane reacts with steam at 1273 K in the presence of nickel catalyst to form :
1. \(CO\) and \(H_2~\)
2. \(CO_2\) and \(H_2~\)
3. \(CO\) and \(H_2O~\)
4. \(CO_2\) and \(H_2O~\)
1. \(CO\) and \(H_2~\)
2. \(CO_2\) and \(H_2~\)
3. \(CO\) and \(H_2O~\)
4. \(CO_2\) and \(H_2O~\)
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Match List-I with List-II:
Choose the correct answer from the options given below
1. A - I, B - III, C -IV, D - II
2. A - II, B - III, C - I, D - IV
3. A - II, B - III, C - IV, D - I
4. A - II, B - IV, C - III, D - I
| List-I | List-II | ||
| A. |  |
I. | (i) Oleum; (ii) NaOH, \(\Delta\); (iii) \(H^+\) |
| B. |  |
II. | (i) \(O_2\); (ii) \(H_2O/H^+\) |
| C. |  |
III. | (i) \(CH_3OH, H^+; \) (ii) \(H_2, \text{catalyst}\) |
| D. |  |
IV | (i) conc. \(H_2SO_4, \Delta;\) (ii) \(H^+/H_2O\) |
Choose the correct answer from the options given below
1. A - I, B - III, C -IV, D - II
2. A - II, B - III, C - I, D - IV
3. A - II, B - III, C - IV, D - I
4. A - II, B - IV, C - III, D - I
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