Compound of sulphur that has linkage among the following is:
1.
2.
3.
4.
A compound 'X' upon reaction with produces a colorless gas 'Y' with rotton fish smell. Gas 'Y' is absorbed in a solution of to give as one of the products. Predict the compound 'X'
1.
2.
3.
4.
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. \(\mathrm{P_{4} O_{10 \left(\right. s \left.\right)} + 6 H_{2} O_{\left(\right. l \left.\right)} \rightarrow 4 H_{3} P O_{4 \left(\right. a q \left.\right)}}\)
Identify the correct formula of 'oleum' from the following
1. H2S2O7
2. H2SO3
3. H2SO4
4. H2S2O8
Among the following oxoacids of phosphorus, the strongest reducing property is for:
1. H4P2O7
2. H3PO3
3. H3PO2
4. H3PO4
Statement I: | Acid strength increases in the order given as HF < HCl < HBr < HI. |
Statement II: | As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCI, HBr, and HI decreases and so the acid strength increases. |
1. | Statement I is correct and Statement II is incorrect | |
2. |
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3. | Both Statement I and Statement II are correct. | |
4. | Both Statement I and Statement II are incorrect. |
Choose the incorrect statement among the following regarding noble gases:
1. | Noble gases have weak dispersion forces. |
2. | Noble gases have large positive values of electron gain enthalpy. |
3. | Noble gases are sparingly soluble in water. |
4. | Noble gases have very high melting and boiling points. |
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 |
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. |
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) |