List-I (Atom/Molecule) |
List-II (Property) |
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A. | Nitrogen | I. | Paramagnetic |
B. | Fluorine molecule | II. | Most reactive element in group 18 |
C. | Oxygen molecule | III. | Element with highest ionisation enthalpy in group 15 |
D. | Xenon atom | IV. | Strongest oxidising agent |
1. | A- III, B-I, C-IV, D-II | 2. | A-I, B-IV, C-III, D-II |
3. | A-II, B-IV, C-I, D-II | 4. | A-III, B-IV, C-I, D-II |
The correct order for boiling points of the following compounds is:
1. | AsH3 > PH3 > NH3 > SbH3 > BiH3 |
2. | BiH3 > SbH3 > NH3 > AsH3 > PH3 |
3. | NH3 > PH3 > AsH3 > SbH3 > BiH3 |
4. | PH3 > NH3 > AsH3 > SbH3 > BiH3 |
1. | \(\mathrm{NaNO}_3+\mathrm{H}_2 \mathrm{SO}_4\xrightarrow[500~K, \ 9\text{ bar}]{Pt} \mathrm{NaHSO}_4+\mathrm{HNO}_3\) |
2. | \(4 \mathrm{NH}_3+5 \mathrm{O}_2 \text{(from air)}\xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{NO}+6 \mathrm{H}_2 \mathrm{O}\) |
3. | \(4 \mathrm{HPO}_3+2 \mathrm{~N}_2 \mathrm{O}_5\xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{HNO}_3+\mathrm{P}_4 \mathrm{O}_{10}\) |
4. | \(\mathrm{Cu}\left(\mathrm{NO}_3\right)_2+2 \mathrm{NO}_2+2 \mathrm{H}_2 \mathrm{O} \\ \xrightarrow[500~K, \ 9\text{ bar}]{Pt} 4 \mathrm{HNO}_3+\mathrm{Cu}\) |
In which one of the following arrangements the given sequence is not strictly according to the properties indicated against it?
1. | NH3 < PH3 < AsH3 < SbH3 | Increasing acidic character |
2. | CO2 < SiO2 < SnO2 < PbO2 | Increasing oxidizing power |
3. | HF < HCl < HBr < HI | Increasing acidic strength |
4. | H2O < H2S < H2Se < H2Te | Increasing pKa values |
Which one of the following reactions does not come under hydrolysis type reaction?
1. \(\mathrm{S i C l_{4 \left(\right. l \left.\right)} + 2 H_{2} O_{\left(\right. l \left.\right)} \rightarrow S i O_{2 \left(\right. s \left.\right)} + 4 H C l_{\left(\right. a q \left.\right)}}\)
2. \(\mathrm{L i_{3} N_{\left(\right. s \left.\right)} + 2 H_{2} O_{\left(\right. l \left.\right)} \rightarrow N H_{3 \left(\right. g \left.\right)} + 3 L i O H_{\left(\right. a q \left.\right)}}\)
3. \(\mathrm{2 F_{2 \left(\right. g \left.\right)} + 2 H_{2} O_{\left(\right. l \left.\right)} \rightarrow 4 H F_{\left(\right. a q \left.\right)} + O_{2 \left(\right. g \left.\right)}}\)
4. \(\mathrm{P_{4} O_{10 \left(\right. s \left.\right)} + 6 H_{2} O_{\left(\right. l \left.\right)} \rightarrow 4 H_{3} P O_{4 \left(\right. a q \left.\right)}}\)
Match the name of process given in Column I with the name of compound given in Column II and mark the correct option.
Column I | Column II | ||
(a) | Pure nitrogen | (i) | Chlorine |
(b) | Haber process | (ii) | Sulphuric acid |
(c) | Contact process | (iii) | Ammonia |
(d) | Deacon's process | (iv) | Sodium azide or Barium azide |
(a) | (b) | (c) | (d) | |
1. | (iv) | (iii) | (ii) | (i) |
2. | (i) | (ii) | (iii) | (iv) |
3. | (ii) | (iv) | (i) | (iii) |
4. | (iii) | (iv) | (ii) | (i) |
False statement regarding PCl5 is:
1. | PCl5 molecule is non-reactive. |
2. | Three equatorial P-Cl bonds make an angle of 120° with each other. |
3. | Two axial P-Cl bonds make an angle of 180° with each other. |
4. | Axial P-Cl bonds are longer than equatorial P-Cl bonds. |