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Metals that are passive by conc HNO(3) a...

Metals that are passive by conc `HNO_(3)` are cr,zn,Al

A

only 1

B

1 and 2

C

I and 3

D

all

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-ALKALINE EARTH METALS-PRACTICE EXERCISE
  1. In the hardening stage of plaster of paris, the compound formed is

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  2. Dead burnt is obtained from gypsum, on heating at

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  3. Metals that are passive by conc HNO(3) are cr,zn,Al

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  4. Which of the following statements are correct i) Both carbides of Be...

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  5. Ions necessary for blood clotting and for muscle contraction

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  6. One of the important uses of quicklime is ?

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  7. In India on the occasion of marriage the fireworks are used to give co...

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  8. The following monoxide is a high melting solid

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  9. The following are the statements about oxides of IIA elements i) Oxi...

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  10. Beryllium hydroxide dissolves in excess of alkli to give

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  11. Correct statements regarding diagnal relationship between belyllium an...

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  12. The decomposition temperature of BaCO(3) (A), MgCO(3) (B) and CaCO(3) ...

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  13. Weight percentage of silica in portland cement is

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  14. During the conversion of one mole of gypsum to one mole of plaster of ...

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  15. Match the following {:("LIST - I","LIST - II"),("A) Aqueous solution...

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  16. The basic character of oxides MgO, SrO, K(2)O, NiO, Cs(2)O increase in...

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  17. A burning strip of magnesium is introduced into a jar containing a gas...

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  18. The calcium concentration in plasma is regulated by which harmones

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  19. Correct matching about composition of portland cement is {:("List - ...

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  20. Bleaching powder is obtained by the reaction chlorine with

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