This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 3 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Element G, L and J are located in Group 17 of the Periodic Table. Element J is more electronegative than element G. The reaction of red-hot iron wool with gas L is more vigorous than the reaction of red-hot iron wool with gas J. The reactivity of these three elements in ascending order is? A) G, J, L. B) L, J, G. C) L, G, J. D) J, G, L. Show Answer Correct Answer: A) G, J, L. 2. Which of the following is NOT an alloy of aluminum? A) Duralumin. B) Magnalium. C) Bronze. D) Alnico. Show Answer Correct Answer: C) Bronze. 3. What is the maximum covalency of boron? A) 6. B) 4. C) 2. D) 8. Show Answer Correct Answer: B) 4. 4. Phospham is prepared from A) Phosphonitrilic halides. B) Silicones. C) Borazole. D) Diborane. Show Answer Correct Answer: A) Phosphonitrilic halides. 5. Pb$_{3}$O$_{4}$ + 4HNO$_{3}$ A) 2Pb(NO$_{3}$)$_{2}$ + 2PbO$_{2}$ + 2H$_{2}$O. B) 2Pb(NO$_{3}$)$_{4}$ + PbO$_{2}$ + 2H$_{2}$O. C) Pb(NO$_{3}$)$_{2}$ + PbO$_{2}$ + 2H$_{2}$O. D) 2Pb(NO$_{3}$)$_{2}$ + PbO$_{2}$ + 2H$_{2}$O. Show Answer Correct Answer: D) 2Pb(NO$_{3}$)$_{2}$ + PbO$_{2}$ + 2H$_{2}$O. 6. Which of the carbonates given below is unstable in air and is kept inCO2atmosphere to avoid decomposition? A) BeCO3. B) MgCO3. C) CaCO3. D) BaCO3. Show Answer Correct Answer: A) BeCO3. 7. Assertion:The fluorine has lower reactivity.Reason:F-F bond has low bond dissociation energy.(a) Assertion is correct, reason is correct; reason is a correct explanation for assertion. (b) Assertion is correct, reason is correct; reason is not a correct explanation for assertion (c) Assertion is correct, reason is incorrect (d) Assertion is incorrect, reason is correct A) A. B) B. C) C. D) D. Show Answer Correct Answer: C) C. 8. The compounds of boron and hydrogen are collectively called A) Boranes. B) Boracits. C) Borazoles. D) Diboranes. Show Answer Correct Answer: D) Diboranes. 9. Liquid ammonia bottles are opened after cooling them in ice for sometime. It is because liquid NH3 A) Brings tears to the eyes. B) Has a high vapour pressure. C) Is a corrosive liquid. D) Is a mild explosive. Show Answer Correct Answer: B) Has a high vapour pressure. 10. The general electronic configuration of p-block elements is A) Ns$^{1}$. B) Ns$^{2}$. C) Ns$^{2}$ np$^{1-6}$. D) (n-1)s$^{2}$ np1-6. Show Answer Correct Answer: C) Ns$^{2}$ np$^{1-6}$. 11. Which element has a higher electronegativity? A) Sulfur. B) Chlorine. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chlorine. 12. Cl2 +H2O $\rightarrow$ A) Hcl. B) Hclo. C) Hclo + Hcl. D) Hclo3. Show Answer Correct Answer: C) Hclo + Hcl. 13. Which is the correct order of decreasing bond dissociation enthalpy? A) F2 > Cl2 > Br2 > I2. B) I2 > Br2 > Cl2 > F2. C) Cl2 > Br2 > F2 > I2. D) Br2 > I2 > F2 > Cl2. Show Answer Correct Answer: C) Cl2 > Br2 > F2 > I2. 14. The shape of XeF4 is A) Tetrahedral. B) Octahedral. C) Square planar. D) Pyramidal. Show Answer Correct Answer: C) Square planar. 15. Which element has the lowest electron affinity A) Argon. B) Sulphur. C) Potassium. D) Astatine. Show Answer Correct Answer: A) Argon. 16. On heating with concentrated NaOH solution in an inert atmosphere of CO white Phosphorus gives gas Which of the following statement is incorrect the gas? A) It is highly poisonous and has smell like rotten fish. B) Its solution in water decomposes in the presence of light. C) It is more basic than $NH_3$. D) It is less basic than $NH_3$. Show Answer Correct Answer: C) It is more basic than $NH_3$. 17. Bond dissociation enthalpy of E-H (E = element) bonds is given below. Which of the compounds will act as strongest reducing agent?Compound NH$_{3}$ PH$_{3}$ AsH$_{3}$ SbH$_{3}$$\Delta$diss (E-H)/kJ mol$^{-1}$ 389 322 297 255 A) NH$_{3}$. B) PH$_{3}$. C) AsH$_{3}$. D) SbH$_{3}$. Show Answer Correct Answer: D) SbH$_{3}$. 18. Some elements exist in more than one crystalline or molecular forms in the same physical state. This phenomenon is called A) Isomerism. B) Allotropism. C) Anomerism. D) Epimerism. Show Answer Correct Answer: B) Allotropism. 19. Colours of group 7 elements are ..... A) Chlorine-pale yellow/green, Bromine orange/brown, iodine-grey shiny. B) Chlorine-grey shiny, Bromine orange/brown, iodine-Yellow. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chlorine-pale yellow/green, Bromine orange/brown, iodine-grey shiny. 20. Tl exists in +1 oxidation state rather than +3 due to A) Low ionisation energy. B) Larger size. C) Inert pair effect. D) Shielding effect. Show Answer Correct Answer: C) Inert pair effect. 21. On heating with concentrated NaOH solution in an inert atmosphere of CO2, white phosphorus gives a gas. Which of the following statement is incorrectabout the gas? A) It is highly poisonous and has smell like rotten fish. B) It's solution in water decomposes in the presence of light. C) It is more basic than NH3. D) It is less basic than NH3. Show Answer Correct Answer: C) It is more basic than NH3. 22. Which of the following fluorides of xenon is impossible? A) XeF$_{2}$. B) XeF$_{3}$. C) XeF$_{4}$. D) XeF$_{6}$. Show Answer Correct Answer: B) XeF$_{3}$. 23. Among the following hydride which have more basic NH3, PH$_{3}$, AsH$_{3}$, SbH$_{3}$, BiH$_{3}$ A) BiH$_{3}$. B) SbH$_{3}$. C) AsH$_{3}$. D) PH$_{3}$. E) NH3. Show Answer Correct Answer: E) NH3. 24. Which of the following is the product of the reaction of aluminium and oxygen? A) Aluminium oxide. B) Aluminium metal. C) Aluminium ore. D) Aluminium and oxygen. Show Answer Correct Answer: A) Aluminium oxide. 25. The Oxidation states of Phosphorous and Nitrogen in Phosphonitrilic halides are respectively A) +II and +IV. B) +IV and +V. C) +III and +V. D) +V and +III. Show Answer Correct Answer: D) +V and +III. ← PreviousNext →Related QuizzesClass 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 1Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 2Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 4Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 5Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 6Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 7Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 8Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 9Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 10Class 12 Chemistry (Part Ii) Chapter 7 P Block Elements Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books