Pakistan latest Mcqs with Answers
By Waqas Niazi / In Everyday Science Mcqs / January 16, 2019
Which of the following is not an element ?
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Who invented the smallpox vaccine ? A: Louis Pasteur B: James Chadwick C: A. Fleming D: Ronald Ross
Which one of the following is the lightest metal ? A: Lithium B: Mercury C: Silver D: Lead