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2160. __________ is a donor impurity for semi-conductors.

September 7, 2025 by Admin

Boron

Antimony

Gallium

None of these

✅ The correct answer is option B.

Categories Chemical Engineering, Engineering, Materials and Construction MCQs Tags Chemical Engineering MCQs, Engineering MCQs, Materials and Construction MCQs

2157. Babbit metal (used for making bearings) comprises of

2163. Pick the odd man out of the following.

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