Question:- Which of the following does not contain a coinage metal? A. Silver and Gold B. Zinc and Gold C. Copper and Silver D. Copper and Gold
Answer:- Option B
Question:- Which metal pollute the air of a big city? A. Copper B. Chromium C. Lead D. Cadmium
Answer:- Option C
Question:- Bell metal is an alloy of A. nickel and copper B. zinc and copper C. brass and nickel D. tin and copper
Answer:- Option D
Question:- Which of the following is not an isotope of hydrogen? A. Tritium B. Deuterium C. Protium D. Yttrium
Answer:- Option D
Question:- Which of the following is the lightest metal? A. Mercury B. Lithium C. Lead D. Silver
Answer:- Option B
Question:- Which of the following metals remain in liquid for under normal conditions? A. Radium B. Zinc C. Uranium D. Mercury
Answer:- Option D
Question:- Which of the following is an element? A. Ruby B. Sapphire C. Emerald D. Diamond
Answer:- Option D