MCQOPTIONS
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| 1. |
Positronium is the name given to an atom-like combination formed between [NCERT 1980; JIPMER 1991] |
| A. | A positron and a proton |
| B. | A positron and a neutron |
| C. | A positron and \[\alpha \]-particle |
| D. | A positron and an electron |
| Answer» E. | |