Anyone good at chemistry ; redox questions.?

I believe the answer to #2 is b. I think the answer to #1 is b also. If I remember correctly, hydrogen has a negative charge, and in H2SO4, it would have a minus 2 charge. There are 2 H atoms, 1 S atom, and 4 O atoms: 7 total. Take 2 from 7, and you're left with 5; but I'm not 100% sure.