Punjab 12th Class Chemistry Chapter 2 s – Block Element Mcqs Test Online 12th Class Chemistry Chapter 2 s – Block Element Mcqs Test Online All Punjab Boards 1234567891011121314151617181920Show paginator Hide paginator Question 1 of 20Chemistry 1. Melting points and boiling points of alkali metals: 1.Remains uncharged 2.First increases then decreases 3.Decreases from top to bottom 4.Increases from top to bottom Question 1 of 20Question 2 of 20 2. Substance boiling at higher temperature among following is? 1.HI 2.HF 3.HCI 4.HBrQuestion 2 of 20Question 3 of 20 3. Which one of the element has the maximum electron affinity? 1.F 2.Cl 3.I 4.Br Question 3 of 20Question 4 of 20 4. The radioactive element in halogen group is: 1.Bromine 2.Radium 3.Astatine 4.Radon Question 4 of 20Question 5 of 20 5. Oxides and hydroxides of Group 1 elements are: 1.Alhaline 2.Amphoteric 3.Acidic 4.Neutral Question 5 of 20Question 6 of 20 6. The first ionization energy is higher for the: 1.Halognes 2.Alkali metals 3.Nobel gases 4.Alkaline earth metals Question 6 of 20Question 7 of 20 7. Select the correct increasing order of atomic radius? 1.Ne > O > S > Al 2.Ne < O > S > Al 3.Ne > O < S > Al4.Ne < O > S > Al Question 7 of 20Question 8 of 20 8. Which pair has both members from same period of periodic table? 1.Cl – Br 2.Na – Cl 3.Ca – Cl 4.Na – Ca Question 8 of 20Question 9 of 20 9. Which of following oxides amphoteric is nature? 1.BeO 2.Mgo 3.SnO₂ 4.CO₂ Question 9 of 20Question 10 of 20 10. When sodium burn in air, it forms sodium: 1.Oxide 2.Monixide 3.Peroxide 4.Superoxide Question 10 of 20Question 11 of 20 11. Highest electron affinity is shown by? 1.Br₂ 2.Cl₂ 3.I₂ 4.F₂ Question 11 of 20Question 12 of 20 12. All the carbonates, sulphates and phosphates of alkaline earth metals are ___________ in water. 1.Soluble 2.Insoluble 3.Less soluble 4.Sprangly Question 12 of 20Question 13 of 20 13. Due to inert pair effect ___________ oxidation state is more stable than ___________ for Sn and Pb. 1.4+, 2+ 2.2+, 4+ 3.1+, 4+ 4.2+, 3+Question 13 of 20Question 14 of 20 14. The carbonates of alkali metal are not affected by heat except: 1.K₂CO₃ 2.Li₂CO₃ 3.Na₂CO₃ 4.Rb₂CO₃Question 14 of 20Question 15 of 20 15. Oxidizing power of halogen depends upon: 1.Energy of dissociation 2.Heat of vaporization 3.All of these 4.Electron affinity Question 15 of 20Question 16 of 20 16. Green is characteristic flame colour of: 1.Barium 2.Strontium 3.Calcium 4.Sodium Question 16 of 20Question 17 of 20 17. Which is the strongest reducing agent? 1.HF 2.Br₂ 3.HCI 4.HBrQuestion 17 of 20Question 18 of 20 18. Which of the following oxides is amphoteric in nature? 1.Barium oxide 2.Sulphur oxide 3.Rubidium oxide 4.Antimony Question 18 of 20Question 19 of 20 19. The flame colour of sodium metal or its compounds is: 1.A, Bright crimson 2.Bright blue 3.Voilet 4.Golden Yellow Question 19 of 20Question 20 of 20 20. Group VII-A elements are generally called: 1.Nobel gases 2.Halogens 3.Metallods 4.Inert gases Question 20 of 20 Loading... Test By Subject Punjab Test By Topics 12th Class Chemistry You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.