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The P - Block Elements (Group 15 - 16 - 17 - 18)
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The P - Block Elements (Group 15 - 16 - 17 - 18)
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25 Questions

1. Which one of the following substance is usedin the laboratory for fast drying of neutralgases? [1992]
2. When chlorine is passed over dry slakedlime at room temperature - the main reactionproduct is [1992]
3. Which of the following is a nitric acidanhydride? [1988]
4. Which of the following is the most basicoxide? [2006]
5. The gases respectively absorbed by alkalinepyrogallol and oil of cinnamon are [1989]
6. Repeated use of which one of the followingfertilizers would increase the acidity of the soil?[1998]
7. Oleum is [1991]
8. P2O5 is heated with water to give [1991]
9. Each of the following is true about white andred phosphorus except that they [1989]
10. In the manufacture of bromine from seawater - the mother liquor containing bromides istreated with [1992]
11. Oxidation of thiosulphate by iodine gives[1996]
12. Brown ring test is used to detect [1994]
13. Which of the following oxy-acids has themaximum number of hydrogens directlyattached to phosphorus? [1999]
14. Among the following which is the strongestoxidising agent? [2009]
15. Which one of the following orders is not inaccordance with the property stated against is?[2006]
16. In the case of alkali metals - the covalentcharacter decreases in the order: [2009]
17. Which of the following statements is nottrue? [2003]
18. Bleaching powder reacts with a few drops ofdilute HCl to give [1989]
19. PCl3 reacts with water to form [1991]
20. Which one of the following oxides ofchlorine is obtained by passing dry chlorine oversilver chlorate at 90°C? [1994]
21. In which of the following compounds - nitrogen exhibits highest oxidation state?[2012]
22. Nitrogen is relatively inactive elementbecause [1992]
23. Which one of the following arrangementsdoes not truly represent the property indicatedagainst it? [2000]
24. Which of the following oxide is amphoteric?[2011]
25. The bleaching action of chlorine is due to[1991]

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