13.
Which of the following statements about the physical properties of metal is NOT correct?
Answer : C. gold and silver are not malleable
14.
which among the following is heaviest metal
Answer : A. Mercury
15.
Which is the lightest metal in the periodic table
Answer : B. Lithium
16.
German silver is the combination of
Answer : B. Copper, Zinc and Nickel
17.
The percentage of gold in 22 carat is
Answer : B. 91.60%
18.
Why is tungsten used in electric bulbs?
Answer : C. It has high melting point