The first metal used by man was
...The first metal used by man was
iron
copper
gold
bronze
Correct answer is B
No explanation has been provided for this answer.
In the extraction of sodium from fused sodium chloride, the anode is made of platinum because ...
What is the chemical symbol for Protactinium? ...
Which of the following statements is incorrect? ...
Which of the following conditions will most enhance the spontaneity of a reaction? ...
At what temperature does the solubility of KNO3 equal that of NaNO3? ...
Which of the following is correct about the electrons in the 1s orbital? They ...
The mass of one Avogadro number of helium atoms is? ...
Which of the curves in the above graph illustrates the behaviour of an ideal gas?...