1. The process: 0/1 e + 0/-1 e --> 2 g is known as (blank).
Fission Fusion Annihilation Photonation None of these

2. Fill in the blank: 22/11 Na--> (blank) +22/10 Ne
4/2 He 1/0 n 0/-1 e 0/1 e None of these

3. All radio active decay is:
Zero Order First Order Zero and First Order First and Second Order None of these

4. You are given a substance, X. The weight is 8.227 grams. The half-life of substance X is 16.5 hours. How much did X weight 5 days ago?
635 grams 1270 grams 1720 grams 860 grams None of these

5. Gamma rays have:
0 protons, 1 neutron, 1 electron 0 protons, 0 neutrons, 0 electrons 1 proton, 0 neutrons, 1 electron 1 proton, 1 neutron, 1 electron None of these

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