Identify the incorrect statement from the following :
| 1. | Phosphorus, arsenic and antimony show catenation property. |
| 2. | \(P(C_2H_5)_3\) and \(As(C_6H_5)_3\) form dπ-dπ bond with transition metals. |
| 3. | Nitrogen can form dπ-pπ bond with oxygen. |
| 4. | Nitrogen can form pπ-pπ multiple bonds with itself. |
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At a certain temperature, T (K), during a process, 500 J is absorbed by the system and work of 200 J is done by the system. Then change in internal energy of the system is :
1. 700 J
2. 400 J
3. 300 J
4. 500 J
1. 700 J
2. 400 J
3. 300 J
4. 500 J
Level 4: Below 35%
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Compound P (C8H8O) gives a red orange precipitate with 2,4-DNP reagent and it does not reduce Fehling's reagent. On drastic oxidation with chromic acid, P gives an aromatic product Q that produces effervescence on treating with aq. NaHCO3; Compounds P and Q, respectively, are :
| 1. |  |
| 2. |  |
| 3. |  |
| 4. |  |
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The correct IUPAC name of the following compound is:
1. 3-ethyl-5-methylheptane
2. 3-methyl-5-ethylheptane
3. 2,4-diethylhexane
4. 3,5-diethylhexane
1. 3-ethyl-5-methylheptane
2. 3-methyl-5-ethylheptane
3. 2,4-diethylhexane
4. 3,5-diethylhexane
Level 4: Below 35%
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When \(1 \text{ dm}^3~\) of \(\text{CO}_2\) gas is passed over hot coke, the volume of gaseous mixture after complete reaction at STP becomes \(1.4 \text{ dm}^3~\). The composition of the gaseous mixture at STP is :
| 1. | \(0.6 \text{ dm}^3~\) of \(\text{CO},~\) \(0.8 \text{ dm}^3~\) of \(\text{CO}_2~\) |
| 2. | \(0.8 \text{ dm}^3~\) of \(\text{CO},~\) \(0.8 \text{ dm}^3~\) of \(\text{CO}_2~\) |
| 3. | \(0.6 \text{ dm}^3~\) of \(\text{CO},~\) \(0.4 \text{ dm}^3~\) of \(\text{CO}_2~\) |
| 4. | \(0.8 \text{ dm}^3~\) of \(\text{CO},~\) \(0.6 \text{ dm}^3~\) of \(\text{CO}_2~\) |
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The correct formal charges on oxygen atoms numbered 2, 1 and 3 respectively are:
1. 0, 0, 0
2. -1, 0, +1
3. +1, 0, -1
4. 0, +1, -1
Level 4: Below 35%
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Match List I with List II
Choose the correct answer from the options given below:
1. A-IV, B-III, C-II, D-I
2. A-IV, B-III, C-I, D-II
3. A-I, B-II, C-III, D-IV
4. A-IV, B-II, C-I, D-III
| Match list I (Order of reaction) |
List II (United of rate constant)
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| A. | Zero order | I. | \(\mathrm{mol}^{-1} \mathrm{~L} \mathrm{~s}^{-1}\) |
| B. | First order | II. | \(\mathrm{mol}^{-2} \mathrm{~L}^2 \mathrm{~s}^{-1}\) |
| C. | Second order | III. | \(S^{-1}\) |
| D. | Third order | IV. | \(\mathrm{mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}\) |
Choose the correct answer from the options given below:
1. A-IV, B-III, C-II, D-I
2. A-IV, B-III, C-I, D-II
3. A-I, B-II, C-III, D-IV
4. A-IV, B-II, C-I, D-III
Level 4: Below 35%
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The correct order of increasing metallic character of Na, Be, P, Mg and Si is:
1. Be < Si < P < Mg < Na
2. P < Si < Na < Mg < Be
3. P < Si < Be < Mg < Na
4. P < Mg < Be < Si < Na
1. Be < Si < P < Mg < Na
2. P < Si < Na < Mg < Be
3. P < Si < Be < Mg < Na
4. P < Mg < Be < Si < Na
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The number of hydrogen atoms present in 5.4 g of urea is :
(Given : Molar mass of urea : 60 g mol-1, NA : 6.022 × 1023 particles mol-1)
1. 2.168 × 1022
2. 2.168 × 1023
3. 1.084 × 1022
4. 1.084 × 1023
(Given : Molar mass of urea : 60 g mol-1, NA : 6.022 × 1023 particles mol-1)
1. 2.168 × 1022
2. 2.168 × 1023
3. 1.084 × 1022
4. 1.084 × 1023
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