61.

Which of the following is the lightest metal?
A. Mercury B. Lithium
C. Lead D. Silver
Answer and Explanation
Answer:B
Explanation: No answer description available for this question.
62.

Which of the following metals remain in liquid for under normal conditions?
A. Radium B. Zinc
C. Uranium D. Mercury
Answer and Explanation
Answer:D
Explanation: No answer description available for this question.
63.

Which of the following is an element?
A. Ruby B. Sapphire
C. Emerald D. Diamond
Answer and Explanation
Answer:D
Explanation: No answer description available for this question.