11. The incorrect statement for solid sodium chlo;ride is that A. both sodium and chloride ions adopt inert gas configuration B. the conduction band is full C. the conduction band is empty D. the valence band is full Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
12. The xenon compounds that are isostructural with $${\bf{IBr}}_2^ - $$ and $${\bf{BrO}}_3^ - $$ respectively are A. linear XeF2 and pyramidal XeO3 B. bent XeF2 and pyramidal XeO3 C. bent XeF2 and planar XeO3 D. linear XeF2 and tetrahedral XeO3 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
13. CaTiO3 has a perovskite crystal structure. The coordination number of titanium in CaTiO3 is A. 9 B. 6 C. 3 D. 12 Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
14. According to VSEPR theory, the shapes of [SF2Cl]+ and [S2O4]2- should be A. trigonal planar for [S2O4]2- and trigonal pyramidal for [SF2Cl]+ B. both trigonal planar C. trigonal pyramidal for [S2O4]2- and trigonal planar for [SF2Cl]+ D. both trigonal pyramidal Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
15. Fe3O4 and Co3O4 are metal oxides having spinel structure. Considering their CFSFs, the correct statement regarding their structure is A. both have normal spinel structure B. both have inverse spinel structure C. Fe3O4 has normal and Co3O4 has inverse spinel structure D. Fe3O4 has inverse and Co3O4 has normal spinel structure Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
16. The band structure in an n-type semiconductor is A. I B. II C. III D. IV Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
17. [XeO6]4- is octahedral whereas XeF6 is a disordered one, because A. fluorine is more electronegative than oxygen B. Xe has a lone pair in XeF6 C. XeF6 is neutral whereas [XeO6]4- is anionic D. Xe-F bond has more ionic characters Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
18. Band theory predicts that magnesium is an insulator. However, in practice it acts as a conductor due to A. presence of filled 3s - orbital B. overlap of filled 2p and filled 3s - orbital C. overlap of filled 3s and empty 3p - orbital D. presence of unfilled 3p - orbital Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board
19. Which of the following statements about the molecule NOCl is correct? A. It has a linear structure B. It belongs to the point group Cs C. It does not have a dipole moment D. It is a chiral molecule Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
20. Among the following, the isoelectronic and isostructural pair is A. CO2 and SO2 B. SO3 and SeO3 C. $${\text{NO}}_2^ + $$ and TeO2 D. $${\text{SiO}}_4^{4 - }$$ and $${\text{PO}}_4^{3 - }$$ Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board