Punjab 12th Class Chemistry Chapter 4 Group V-A and Group VI-A Elements MCQs Test Online Punjab 12th Class Chemistry Chapter 4 Group V-A and Group VI-A Elements MCQs Test Online 1234567891011121314151617181920Show paginator Hide paginator Question 1 of 20Chemistry 1. The brown gas formed, when metal reduces HNO3 to1.NO22.N2O53.NO4.N2OQuestion 1 of 20Question 2 of 20 2. Out of all the elements of group VIA, the highest melting and boiling points is shown by the elements1.S2.Po3.Te4.SeQuestion 2 of 20Question 3 of 20 3. NO2 is called1.Nitrous oxide2.Nitrogen peroxide3.Nitric anhydride4.Nitrite oxideQuestion 3 of 20Question 4 of 20 4. Which catalyst is used in contact process1.V2O52.SO33.Fe2O34.Ag2OQuestion 4 of 20Question 5 of 20 5. In comparison with oxygen gas. a strong triple bond is present between two nitrogen atoms in a molecule and therefore nitrogen gas is:1.Highly reactive gas2.Moderately reactive gas3.Very less reactive gas4.Completely inert like noble gasesQuestion 5 of 20Question 6 of 20 6. Which of the following specie has the maximum number of unpaired electrons1.O2+2.O22-3.O24.O2-Question 6 of 20Question 7 of 20 7. Out of all the elements of group VA, the highest ionization energy is possessed by1.Sb2.P3.N4.BiQuestion 7 of 20Question 8 of 20 8. The most electronegative element in group-VA is1.N2.Sb3.P4.AsQuestion 8 of 20Question 9 of 20 9. SO3 is not absorbed in water directly to from H2SO4 because1.The reaction does not go to complete2.SO3 is insoluble in water3.The reaction is quite slow4.The reaction is highly exothermicQuestion 9 of 20Question 10 of 20 10. Gold dissolves in aqua regain to form.1.Aul32.AuCl33.Aul24.Au2(SO4)3Question 10 of 20Question 11 of 20 11. Oxidation of NO in air produces1.N2042.N2O53.N2034.N2OQuestion 11 of 20Question 12 of 20 12. Laughing gas is chemically1.NO2.N2O3.NO24.N2O4Question 12 of 20Question 13 of 20 13. Laughing gas is:1.N2O2.NO33.NO4.N2O2Question 13 of 20Question 14 of 20 14. Chemical formula of laughing gas is1.N2O32.NO3.N2O44.N2OQuestion 14 of 20Question 15 of 20 15. The lowest ionization energy is possessed by:1.Sb2.P3.Bi4.NQuestion 15 of 20Question 16 of 20 16. Which of the following is a reddish brown gas:1.N2O2.N2O53.NO24.NOQuestion 16 of 20Question 17 of 20 17. Free nitrogen and oxygen are present in atmosphere but they do not react with each other under normal conditions because1.oxygen is found in less conc.2.oxygen is very inactive3.nitrogen is highly inactive4.nitrogen requires a catalystQuestion 17 of 20Question 18 of 20 18. Among group VA elements, the most electronegative element is1.P2.As3.Sb 4.NQuestion 18 of 20Question 19 of 20 19. Which of the following gas is evolved when cooper reacts with dil HNO3?1.NO2.NO23.None4.N2OQuestion 19 of 20Question 20 of 20 20. The compound N20 causes disease:1.Hysterical Laughter2.Tumor3.Cancer4.Sleeping SicknessQuestion 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.