Pakistan latest Mcqs with Answers
By Waqas Niazi / In Everyday Science Mcqs / January 16, 2019
Which gas is usually filled in the electric bulb ?
B: Carbon dioxide
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Which element is common to all acids? A: Oxygen B: Carbon C: Hydrogen D: Sulfur
Which one of the following is used in making pencils ? A: Charcoal B: Graphite C: Phosphorous D: Silicon