General Science Chemistry MCQs

Q.  Which of the following metals is the first metal used by a man?

a. Gold
b. Copper
c. Silver
d. Iron


ANSWER: See Answer
 
A copper awl is the oldest metal object unearthed to date in the Middle East. The discovery reveals that metals were exchanged across hundreds of miles in this region more than 6,000 years ago, centuries earlier than previously thought, researchers say.
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MCQs:  In the nuclide defined by &¹⁵&₇X, the number of protons and neutrons respectively are
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MCQs:  A helium nucleus comprising of two protons and two neutrons with a charge of 2e is
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MCQs:  Isotopes have same number of protons but different number of
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MCQs:  The number of protons inside nucleus represents
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MCQs:  The positive charge in an atom was concentrated in a small region called
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