When a substance was heated, its conductivity was increased, what should it be out of the following?
جب کسی مادے کو گرم کیا گیا تو ، اس کی چالکتا میں اضافہ کیا گیا تھا ، تو اسے مندرجہ ذیل میں سے کیا ہونا چاہئے؟
Answer: Semi-conductors
Explanation
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