MCQOPTIONS
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MCQOPTIONS
This section includes 26 Mcqs, each offering curated multiple-choice questions to sharpen your The p Block Elements knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Sulphur molecule is |
| A. | diatomic |
| B. | triatamic |
| C. | tetratomic |
| D. | Octa-atomic |
| Answer» E. | |
| 2. |
On heating KCIO, we get |
| A. | KClO2 + O2 |
| B. | KCl + O2 |
| C. | KCI + O3 |
| D. | KCl + O2 + O3 |
| Answer» C. KCI + O3 | |
| 3. |
Arrange the following hydrides of group 16 elements in order of increasing stability |
| A. | H2S < H2O < H2Te > H2Se |
| B. | H2O < H2Te < H2Se < H2S |
| C. | H2O < H2S < H2Se < H2Te |
| D. | H2Te < H2Se < H2S < H3O |
| Answer» E. | |
| 4. |
The hybridisation of sulphur in sulphur hexafluoride is |
| A. | sp3d |
| B. | sp3d2 |
| C. | sp3d3 |
| D. | sp3 |
| Answer» C. sp3d3 | |
| 5. |
How many P-O-P bonds appear in cyclic meta-phosphoric acid? |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» C. 2 | |
| 6. |
PCl3 on hydrolysis gives |
| A. | H3PO3 |
| B. | HPO3 |
| C. | H3PO4 |
| D. | POCl3 |
| Answer» B. HPO3 | |
| 7. |
Which one of the following does not form hydrogen bonding? |
| A. | NH3 |
| B. | H2O |
| C. | HCl |
| D. | HF |
| Answer» D. HF | |
| 8. |
The shape of XeF4 is |
| A. | tetrahedral |
| B. | square planar |
| C. | pyramidal |
| D. | linear |
| Answer» C. pyramidal | |
| 9. |
Main source of helium is |
| A. | Air |
| B. | Radium |
| C. | Monazite |
| D. | Water |
| Answer» D. Water | |
| 10. |
Which one of the following is the strongest lewis acid? |
| A. | BF3 |
| B. | BCl3 |
| C. | BBr3 |
| D. | Bl3 |
| Answer» C. BBr3 | |
| 11. |
Element found from sea water is |
| A. | magnesium |
| B. | Sodium |
| C. | Iodine |
| D. | None of these |
| Answer» D. None of these | |
| 12. |
Which one of the following is an electrophilic reagent? |
| A. | BF3 |
| B. | KH3 |
| C. | H2O |
| D. | None of these |
| Answer» B. KH3 | |
| 13. |
Which of the following oxides is an hydride of nitrous acid ? |
| A. | N2O3 |
| B. | NO2 |
| C. | NO |
| D. | N2O4 |
| Answer» B. NO2 | |
| 14. |
The number of P-O-P bonds in cyclic metaphosphoric acid is |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| Answer» B. 3 | |
| 15. |
Atomicity of phosphorus is |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 16. |
Which oxide of nitrogen is obtained on heating ammonium nitrate at 250 C ? |
| A. | Nitric oxide |
| B. | Nitrous oxide |
| C. | Nitrogen dioxide |
| D. | Dinitrogen tetraoxide |
| Answer» C. Nitrogen dioxide | |
| 17. |
Catenation property is maximum in |
| A. | phosphorus |
| B. | carbon |
| C. | sulphur |
| D. | zinc |
| Answer» C. sulphur | |
| 18. |
Which of the following has maximum ionisation potential? |
| A. | Al |
| B. | P |
| C. | Si |
| D. | Mg |
| Answer» C. Si | |
| 19. |
Which of the following is the strongest oxidising agent? |
| A. | F2 |
| B. | Cl2 |
| C. | l2 |
| D. | Br2 |
| Answer» B. Cl2 | |
| 20. |
Which one of the following elements is found in free state in nature? |
| A. | Sodium |
| B. | Iron |
| C. | Zinc |
| D. | Gold |
| Answer» E. | |
| 21. |
Modern periodic table is given by |
| A. | Debonair |
| B. | Mendeleef |
| C. | Mendel |
| D. | None of these |
| Answer» C. Mendel | |
| 22. |
Which one of the following is least basic? |
| A. | NCl3 |
| B. | NBr3 |
| C. | NI3 |
| D. | NF3 |
| Answer» D. NF3 | |
| 23. |
Which one of the following dement is liquid at normal temperature? |
| A. | zinc |
| B. | mercury |
| C. | bromine |
| D. | water |
| Answer» C. bromine | |
| 24. |
Boron shows diagonal relation with |
| A. | Al |
| B. | C |
| C. | Si |
| D. | Sn |
| Answer» D. Sn | |
| 25. |
The structure of white phosphorus is |
| A. | square-planar |
| B. | pyramidal |
| C. | tetrahedral |
| D. | trigonal planar |
| Answer» D. trigonal planar | |
| 26. |
Which of the following is a tetrabasic acid? |
| A. | Hypophosphorus acid |
| B. | Metaphosphoric acid |
| C. | Pyrophosphoric acid |
| D. | Orthophosphoric acid |
| Answer» D. Orthophosphoric acid | |