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Serveral blocks of magnesium are fixed t...

Serveral blocks of magnesium are fixed to the bottom of a ship to

A

prevent action of water and salt

B

prevent puncturing by undersea rocks

C

keep away from the sharks

D

make the ship lighter

Text Solution

Verified by Experts

The correct Answer is:
D
`Mg` due to lightness and toughness is used in ships.
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A2Z-S BLOCK ELEMENTS ( GROUP 13 - 14)-General Characterstics, Pysical And Chemical Properties Of Alkaline Earth Metals
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  2. Amongst the following hydroxides, the one which has the lowest value o...

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  3. Serveral blocks of magnesium are fixed to the bottom of a ship to

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  4. Beryllium shows diagonal relationship with aluminum . Which of the fol...

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  5. A metal M readily forms its sulphate MSO(4) which is watersoluble. It ...

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  6. The first ionisation potentials (eV) of Be and B respectively are

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  7. The set representing the correct order of the first ionisation potenti...

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  8. Calcium is obtained by the

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  9. Which of the following is incorrect ?

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  10. Compounds of alkaline earth metals are less soluble in water than the ...

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  11. Which of the following sulphates is useful in diagnosing stomach or du...

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  12. Lithopone is a mixture of

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  13. The decreasing order of the second ionization potentials of K, Ca and ...

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  14. Li shows the diagonal relationship with

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  15. Mg burns in CO to produce

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  16. Halides of alkaline earth metals form hydrates such as MgCl(2).6H(2)O,...

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  17. Which of the following has maxiumum ionisation energy ?

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  18. Magnesium powder burns in air to give :

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  19. Be(OH)(2) is insoluble in water while Ba(OH)(2) is highly soluble due...

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  20. The solubilities of carbonates decreases down the magnesium group due ...

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