Class 12 Chemistry MCQs Chapter 4 Group 5A and 6A

Here is 2nd Year Chemistry MCQs Chapter No.4 Group 5A and 6A Elements with from Past Papers detail answers for all kind of Board exams. Mostly MCQs in this quiz from Past Papers. MCQs of Block Elements are very important. کیمسٹری بارہویں کلاس کے انتہائی اہم ایم سی کیوز ۔ یہ تمام ایم سی کیوز پنجاب کے 9 بورڈز اور آزاد جموں اینڈ کشمیر بورڈ کے پرانے پرچہ جات سے لئے گئے ہیں۔ جو کہ امتحان کی تیاری کے لئے بہت اہم ہیں۔ یہ ایم سی کیوز ان طلبا کے لئے ہیں جو بورڈ کے امتحان ، میڈیکل کالج اور انجینئرنگ یونیورسٹی کے اینٹری ٹسٹ میں بہترین کامیابی حاصل کرنا چاہتے ہیں ۔ہر سوال کےسامنے بورڈ کے امتحان کا سال اور بورڈ کا نام بھی درج ہے۔ Multiple Choice Questions 2nd Year MCQs Chemistry F.Sc. Part 2 Chapter No.4 Group 5A and 6A ElementsBest MCQs for Entry Test MDCAT, ECAT & Pakistan Medical Commission 2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 50 1. The lowest ionization energy is possessed by: (LHR 2018 GII) (SGD 2019 GI) A. NB. PC. AsD. Sb Show Answers Answer: D. Sb (adsbygoogle = window.adsbygoogle || []).push({}); 2. Which of the following elements gives acidic oxide? (RWP 2016) A. Sb B. N C. Bi D. As Show Answers Answer:B. N 3. The elements whose inorganic minerals are not much abundant in earth crust (RWP 2016) A. Li B. N C. Na D. O Show Answers Answer:B. N (adsbygoogle = window.adsbygoogle || []).push({}); 4. Laughing gas is (SWL 2016) (GRW 2017) (DGK, FSD, SGD, BWP 2018) (BWP, RWP, SGO, LHR 2019) A. NO B. NO2 C. N2O D. N2O3 Show Answers Answer:C. N2O 5. Which of the following gas is evolved when copper reacts with dil, HNO3 ? (RWP 2009) A. N2O B. NO C. NO2 D. None of these Show Answers Answer:B. NO Click for More Online Chemistry MCQs Tests 2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 47 6. Oxidation of NO in air produces: (RWP, SGD 2015) (GRW 2019) A. N2O B. N2O3 C. N2O5 D. N2O4 Show Answers Answer:D. N2O4 (adsbygoogle = window.adsbygoogle || []).push({}); 7. Nitric acid can be transported in a container made up of : (LHR 2016) A. Al B. Zn C. Cu D. None of these Show Answers Answer:A. Al 8. The brown gas formed, when metal reduces HNO3 to (SWL, DGK 2017 GII) (RWP 2018) A. NO B. NO2 C. N2O3 D. N2O5 Show Answers Answer:B. NO2 (adsbygoogle = window.adsbygoogle || []).push({}); 9. Gold dissolves in aqua regia to form: (BWP 2014) (FSD 2015) A. AuCl3 B. NaH2BO3 C. Na2B4O7 D. Na3BO3 Show Answers Answer:A. AuCl3 10. Bone ash contains (DGK 2009) A. 80° P B. 80 ° Ca3(PO4)2 C. 90 ° P D. 90 ° P Ca3(PO4)2 Show Answers Answer:B. 80 ° Ca3(PO4)2 Click for More Online Chemistry MCQs Tests 2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 47 11. The geometerical shape of PCl5 is (RWP 2014) (GRW 2016) A. Octahedral B. Square planner C. Trigonal bipyramidal D. tetrahedral Show Answers Answer:C. Trigonal bipyramidal (adsbygoogle = window.adsbygoogle || []).push({}); 12. In phophorous one of the 3p electron can be promoted to a vacant 3d orbitals giving: (RWP 2010) A. 2 unpaired electrons in the valence shell B. 3 unpaired electrons in the valence shell C. 4 unpaired electrons in the valence shell D. 5 unpaired electrons in the valence shell Show Answers Answer:D. 5 unpaired electrons in the valence shell 13. Which of the following is not property of phophorus (LHR 2014) A. It means light bearing B. It does not exit free in nature C. Rich source of Phosphorus is bone ash D. It does not exit in allotropic forms Show Answers Answer:D. It does not exit in allotropic forms (adsbygoogle = window.adsbygoogle || []).push({}); 14. Molecular formula of white phosphorus is (BWP 2014) (FSD 2015) A. P4 B. P8 C. P3 D. P2 Show Answers Answer:A. P4 15. Ortho Phosphoric acid has melting point: (LHR 2012) (SWL 2013) A. 49 C B. 45 C C. 41 C D. 50 C Show Answers Answer:C. 41 C Click for More Online Chemistry MCQs Tests 2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 47 16. Sulphur is an essential constituent of (MTN 2015) A. Chlorophyll B. Plants C. Proteins D. All of these Show Answers Answer:D. All of these (adsbygoogle = window.adsbygoogle || []).push({}); 17. At 18C the specific gravity of H2SO4 is (MTN 2014)(LHR 2015) A. 1.891 B. 1.834 C. 2.101 D. 1.74 Show Answers Answer:B. 1.834 18. The catalyst used in contact process is A. Fe2O3 B. V2O5 C. NO D. Ag2O Show Answers Answer:B. V2O5 (adsbygoogle = window.adsbygoogle || []).push({}); 19. Arsenic oxides are removed during manufacture of H2SO4 by passing through (SGR 2010) A. Ferric hydroxide B. Sodium hydroxide C. Calcium hydroxide D. Potassium hydroxide Show Answers Answer:A. Ferric hydroxide 20. SO3 is not absorbed in water directly to from H2SO4 because (GRW 2015) A. The reaction does not go to completion B. The reaction is quite slow C. The reaction is highly exothermic D. SO3 is insoluble in water Show Answers Answer:C. The reaction is highly exothermic Click for More Online Chemistry MCQs Tests 2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 47 21. Which of the following statement is incorrect (DGK 2014) (FSD, GRW 2015) A. H2SO4 acts as a strong oxidizing agent B. H2SO4 acts as a strong reducing agent C. H2SO4 acts as a dehydrating agent D. H2SO4 acts as a sulphonating agent Show Answers Answer:B. H2SO4 acts as a strong reducing agent (adsbygoogle = window.adsbygoogle || []).push({}); 22. Out of all the elements of group VA, the highest ionization energy is possessed by. (BWP 2017) (MTN 2016, 2019) A. N B. P C. Sb D. Bi Show Answers Answer:A. N 23. Among group VA elements, the most electronegatice elements is (FSD 2017) (DGK 2019) A. Sb B. N C. P D. As Show Answers Answer:B. N (adsbygoogle = window.adsbygoogle || []).push({}); 24. Oxidation of NO in air produces (SWL 2015) (LHR 2016) (RWP 2015, 2017) (MTN, SGD 2018) (GRW 2019) A. N2O B. N2O3 C. N2O4 D. N2O5 Show Answers Answer:C. N2O4 25. The brown gas formed, when metal reduces HNO3 to (AJK 2017) (RWP 2018) (MTN 2018 GII) (FSD 2019) (GRW 2019 GII) A. N2O5 B. N2O3 C. NO2 D. NO Show Answers Answer:C. NO2 Click for More Online Chemistry MCQs Tests 2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 47 26. laughing gas is chemically (GRW 2017) (DGK 2018) (LHR 2019) (FSD 2018) (SGD 2018, 2019 GII) (RWP, AJK 2019) A. NO B. N2O C. NO2 D. N2O4 Show Answers Answer:B. N2O (adsbygoogle = window.adsbygoogle || []).push({}); 27. Out of all the elements of group VA, the highest melting and points is shown by the element. (DGK 2019 GII) A. Te B. Se C. S D. Pb Show Answers Answer:A. Te 28. SO3 is not absorbed in water directly to from H2SO4 because (GRW 2015) A. The reation does not go to completion B. The reaction is quite slow C. The reation is highly exothermic D. SO3 is insoluble in water Show Answers Answer:C. The reation is highly exothermic (adsbygoogle = window.adsbygoogle || []).push({}); 29. Which catalyst is used in contact process? (GRW 2016) (SGD 2016, 2017) (LHR , MTN 2017, 2018) (AJK 2019) (SWL 2018, 2019) A. Fe2O3 B. V2O5 C. SO3 D. Ag2O Show Answers Answer:B. V2O5 30. Which of the following speice has the maximum number of unpaired electron? (DGK 2017) (MTN, BWP 2019 GII) A. O2 B. O+ 2 C. O- 2 D. O2- 2 Show Answers Answer:A. O2 Click for More Online Chemistry MCQs Tests 2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 47 31. In contact process, the catalyst used for the conversion sulphur dioxide to sulphur trioxide is: (UHS 2011) A. Magnesium oxide B. Aluminum oxide C. Silicon dioxide D. Vanadium pentaoxide Show Answers Answer:D. Vanadium pentaoxide (adsbygoogle = window.adsbygoogle || []).push({}); 32. Which of the following does not occur in Free State? A. Nitrogen B. Phosphorous C. Oxygen D. Sulpher Show Answers Answer:B. Phosphorous 33. Both O2 and O3 are Oxidizing agents but O3 is preferred because: A. It is relatively unstable than O2 B. It provides an extra oxygen atom then O2 C. It provides Nacent Oxygen D. All of above Show Answers Answer:D. All of above (adsbygoogle = window.adsbygoogle || []).push({}); 34. Formula of laughing gas is A. NO B. NH3 C. N2O D. N2O3 Show Answers Answer:C. N2O 35. H2SO4 is used in industries of. A. Paint B. Textile C. Rubber D. Aluminum Show Answers Answer:A. Paint Click for More Online Chemistry MCQs Tests 2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 47 36. H3PO3 is: A. Weak reducing agent B. Strong reducing agent C. Strong reducing agent D. Weak oxidizing agent Show Answers Answer:A. Weak reducing agent (adsbygoogle = window.adsbygoogle || []).push({}); 37. In rhombic sulphur, there are ________ atoms in each molecule? A. 7 B. 8 C. 6 D. 9 Show Answers Answer:C. 6 38. In which of the following the oxidation state of S is the highest? A. SO2 B. SCI2 C. H2SO4 D. H2SO3 Show Answers Answer:C. H2SO4 (adsbygoogle = window.adsbygoogle || []).push({}); 39. Which of these is not an isotope of Phosporus? A. Red Phosphorus B. Black Phosphorus C. White Phosphorus D. Gray Phosphorus Show Answers Answer:D. Gray Phosphorus 40. Which of the following has allotropic forms: A. Oxygen B. Sulpher C. Oxygen & Sulpher D. None of these Show Answers Answer:C. Oxygen & Sulpher Click for More Online Chemistry MCQs Tests 2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 47 41. In silicon dioxide, each silicon atom is tetrahedrally bonded to four oxygen atoms and each oxygen atom is bonden to two silicon atoms. The ratio of silicon to oxygen atoms is: A. 2:02 B. 2:01 C. 1:02 D. 1:04 Show Answers Answer:C. 1:02 (adsbygoogle = window.adsbygoogle || []).push({}); 42. Which one of the following does not have allotropes? A. N B. P C. As D. Sb Show Answers Answer:A. N 43. Which of the following does not occur in Free State? A. Nitrogen B. Phosphorous C. Oxygen D. Sulpher Show Answers Answer:B. Phosphorous (adsbygoogle = window.adsbygoogle || []).push({}); 44. Both O2 and O3 are Oxidizing agents but O3 is preferred because: A. It is relatively unstable than O2 B. It provides an extra oxygen atom then O2 C. It provides Nacent Oxygen D. All of above Show Answers Answer:D. All of above 45. In which of the following the oxidation state of S is the highest? A. SO2 B. SCI2 C. H2SO4 D. H2SO3 Show Answers Answer:C. H2SO4 Click for More Online Chemistry MCQs Tests 2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 47 46. Which of the following has allotropic forms? A. Oxygen B. Sulpher C. Oxygen & Sulpher D. None of these Show Answers Answer:C. Oxygen & Sulpher (adsbygoogle = window.adsbygoogle || []).push({}); 47. In rhombic sulphur, there are ________ atoms in each molecule? A. 7 B. 8 C. 6 D. 9 Show Answers Answer:B. 8 Feel free to Contact us admin@786Times.com (adsbygoogle = window.adsbygoogle || []).push({}); We also available on Social Mediaat facebook( fb )https://facebook.com/786Timespkhttps://facebook.com/786TimesnewsAlso available onTwitter ID: https://twitter.com/786times (adsbygoogle = window.adsbygoogle || []).push({});

Class 12 Chemistry MCQs Chapter 4 Group 5A and 6A

2nd Year Chemistry MCQs F.Sc. Part 2
Chapter No.4
Group 5A and 6A Elements
Total MCQs = 47

46. Which of the following has allotropic forms?

47. In rhombic sulphur, there are ________ atoms in each molecule?

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2nd Year Chemistry MCQs F.Sc. Part 2Chapter No.4Group 5A and 6A ElementsTotal MCQs = 47

46. Which of the following has allotropic forms?

47. In rhombic sulphur, there are ________ atoms in each molecule?

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2nd Year Chemistry MCQs F.Sc. Part 2
Chapter No.4
Group 5A and 6A Elements
Total MCQs = 47