Question

The ballest element is
(A) Aluminium and Silicon
(C) Aluminium and Cadmium
(B) Copper and Cadmium
(D) Zinc and Copper​

Answer 1

Answer:

(d)Zinc and Copper

Explanation:

they both are pure metals

Answer 2

...........OPTION (A) IS UR ANSWER ........

ADDITIONAL INFORMATION

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Ballast is material that is used to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability. ... Water should move in and out from the ballast tank to balance the ship.