Q1. What is the main reason for the formation of colored ions in transition elements?A. Large atomic sizeB. High ionization energyC. d-d transitionsD. Presence of f-electrons
Q2. What is the magnetic moment (in BM) of Fe 3+ ion? (Atomic number of Fe = 26)A. 1.73B. 2.83C. 5.92D. 3.87
Q3. Which of the following is NOT a use of potassium permanganate?A. DisinfectantB. Oxidizing agent in organic chemistryC. Reducing agent in metallurgyD. Bleaching agent
Q4. Which catalyst is used in the Contact Process for sulfuric acid production?A. FeB. V 2 O 5C. PtD. Ni
Q5. Which of the following ions has the electronic configuration [Ar] 3d 6 ?A. Fe 3+B. Fe 2+C. Co 2+D. Ni 2+
Q6. What is the magnetic moment (in BM) of a transition metal ion with 4 unpaired electrons?A. 3.87B. 4.90C. 5.92D. 2.83
Q7. Which of the following transition metal ions is colorless in aqueous solution?A. Fe 3+B. Cu 2+C. Sc 3+D. Ni 2+
Q8. What is the primary reason for the catalytic properties of transition metals?A. High melting pointsB. Variable oxidation statesC. Large atomic sizeD. Presence of f-electrons
Q9. Which of the following is NOT a property of transition metal alloys?A. High hardnessB. High melting pointsC. Low melting pointsD. Corrosion resistance
Q10. Which actinoid exhibits the +3 oxidation state exclusively?A. Uranium (U)B. Plutonium (Pu)C. Actinium (Ac)D. Thorium (Th)