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The atomic numbers of four elements are ...

The atomic numbers of four elements are given below. Which one is an alkaline earth metal?

A

10

B

20

C

30

D

40

Text Solution

Verified by Experts

The correct Answer is:
B
Element with atomic number 20(Ca) is an alkaline earth metal.
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DINESH PUBLICATION-ALKALI EARTH METALS-Revision Questions From Competitive Exams.
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  2. Which is used in the laboratory for last drying of neutral gases?

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  4. The mixture of MgCl(2) and MgO is called .

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  6. Except lime, a major constituent of Portland cement is

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  7. Gypsum on heating to 390 K gives

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  8. Weakest base among KOH, NaOH, Ca(OH)(2)" and "Zn(OH)(2) is :

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  9. Electrolysis of fused anhydrous KCl.MgCl2.6H2o gives

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  10. Beryllium is placed above magnesium in the II group. Beryllium dust, t...

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  11. Amongest the metal Be, Mg, Ca and Sr of group 2 of the periodic table,...

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  12. Among the following oxides, the one which is most basic is

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  13. Presence of which of the following salt increases the rate of setting ...

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  14. Which of the following will liberate hydrogen by its reaction with hy...

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  15. White heavy precipitates are formed when BaCl(2) is added to a clear s...

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  16. Which of the following is a true peroxide?

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  17. Which of the following alkaline earth metals is the strongest reducing...

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  18. Which of the following carbonates will not decompose on heating?

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  19. Sodium sulphate is soluble in water but barium sulphate is insoluble b...

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  20. White enamel of our teeth is

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