Q1. Which of the following transition metal ions has the electronic configuration [Ar] 3d 7 ?A. Fe 2+B. Co 2+C. Ni 2+D. Cu 2+
Q2. What is the product when acidified KMnO 4 reacts with Fe 2+ ?A. Fe 3+ + Mn 2+B. Fe + MnO 2C. Fe 3+ + MnO 2D. Fe + Mn 2+
Q5. Which of the following is NOT a use of potassium dichromate?A. Oxidizing agent in organic chemistryB. Primary standard in volumetric analysisC. Reducing agent in metallurgyD. Leather tanning
Q6. Which of the following is NOT a use of transition metals or their compounds?A. CatalystsB. PigmentsC. Inert electrodesD. Alloy formation
Q7. Which of the following statements about actinoids is correct?A. They show only +3 oxidation stateB. They are non-radioactiveC. They exhibit variable oxidation statesD. They do not form complexes
Q9. What is the magnetic moment (in BM) of a transition metal ion with 3 unpaired electrons?A. 2.83B. 3.87C. 4.90D. 5.92
Q10. Which of the following statements about actinoids is INCORRECT?A. They exhibit variable oxidation statesB. They are all radioactiveC. They form colored ionsD. They are non-radioactive