| Statement I: | High density polythene is formed in the presence of catalyst triethylaluminium and titanium tetrachloride. |
| Statement II: | High density polymers are chemically inert. |
| Statement I: | Hydrated chlorides and bromides of Ca, Sr and Ba on heating undergo hydrolysis. |
| Statement II: | Hydrated chlorides and bromides of Be and Mg on heating dehydration. |
| (i) | ![]() |
| (ii) | ![]() |
| (iii) | ![]() |
| 1. | (i) < (ii) < (iii) | 2. | (ii) < (i) < (iii) |
| 3. | (iii) < (ii) < (i) | 4. | (ii) < (iii) < (i) |
| 1. | \(1.550 \times10^{24}\) | 2. | \(3.011 \times10^{25}\) |
| 3. | \(3.011 \times10^{24}\) | 4. | \(6.022 \times10^{24}\) |
| 1. | NO, ZnO, CO2, CaO | 2. | ZnO, NO, CaO, CO2 |
| 3. | NO, CO2, ZnO, CaO | 4. | NO, CO2, CaO, ZnO |
| A. | Chrome steel is used for cutting tools and crushing machines. |
| B. | The fine dust of aluminium is used in paints and lacquers. |
| C. | Copper is used for the reduction of alcohol. |
| D. | Zinc dust is used as a reducing agent in the manufacturing of paints. |
| E. | Iron is used for galvanising zinc. |
| 1. | NaNO2/HCl; Sn/HCl; Br2; H2O/H3PO2 |
| 2. | Sn/HCl; NaNO2/HCl; Br2; H2O/H3PO2 |
| 3. | Br2; Sn/HCl; NaNO2/HCl; H2O/H3PO2 |
| 4. | Sn/HCl; Br2; NaNO2/HCl; H2O/H3PO2 |