Several blocks of magnesium are fixed to the bottom of a ship to �

1.	Several blocks of magnesium are fixed to the bottom of a ship to [AIEEE 2003]
A.	Keep away the sharks
B.	Make the ship lighter
C.	Prevent action of water and salt
D.	Prevent puncturing by under-sea rocks
Answer» D. Prevent puncturing by under-sea rocks

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Several blocks of magnesium are fixed to the bottom of a ship to [AIEEE 2003]

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