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ENTRANCE TEST – 2009 Multiple Questions and Answers.
| 31. | To convert the Si crystal into p-type semi-conductor, which group element will be doped: | ||
| A. | Trivalent Element | ||
| B. | Second Group Element | ||
| C. | Fourth Group Element | ||
| D. | Pentavalent Element | ||
| 32. | Each molecule of haemoglobin is made up of nearly | ||
| A. | 11000 atoms | ||
| B. | 6600 atoms | ||
| C. | 10000 atoms | ||
| D. | 6800 atoms | ||
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