Q1. Which of the following transition metal ions has the electronic configuration [Ar] 3d 4 ?A. Mn 3+B. Cr 2+C. Fe 3+D. Co 2+
Q2. Which lanthanoid exhibits +4 oxidation state due to its noble gas-like configuration?A. LaB. CeC. GdD. Lu
Q5. Which of the following transition metal ions has the electronic configuration [Ar] 3d 8 ?A. Fe 2+B. Co 2+C. Ni 2+D. Cu 2+
Q6. 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
Q7. Which of the following is NOT a use of potassium permanganate?A. Oxidizing agent in organic chemistryB. DisinfectantC. Reducing agent in metallurgyD. Bleaching agent
Q8. 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