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Chemicals compound 'A' is used to remove...

Chemicals compound 'A' is used to remove temporary hardness from water. It reacts with `Na_2 CO_3` to generate caustic soda. When `CO_2` is bubbled through 'A'. It turns cloudy. What is the chemical formula of 'A' ?

A

`CaCO_3`

B

CaO

C

`Ca(OH)_2`

D

`Ca(HCO_3)_2`

Text Solution

Verified by Experts

The correct Answer is:
D
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MBD PUBLICATION-S- BLOCK ELEMENTS [ALKALI AND ALKALINE EARTH METALS]-QUESTION TYPE
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  2. The elements forming predominantly covalent bonds in the following is:

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  3. Chemicals compound 'A' is used to remove temporary hardness from water...

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  4. The metal 'X' on heating with nitrogen gives compound 'Y' which dissol...

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  5. Ba, Sr, Ca and Mg may be arranged in order of decreasing first ionisat...

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  6. Halides of alkaline earth elements generally form hydrates. This shows...

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  7. The set representing the correct first ionisation energies (IE1) is:

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  8. Identify the least stable among the following

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  9. Which of the following process is used in the extraction of metallurgy...

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  10. The substance not likely to contain CaCO3 is:

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  11. Why is magnesium less electropositive than calcium ?

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  12. What is the formula of gypsum ?

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  13. How does very dilute HNO3 react with Mg ? Give equation only.

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  14. Between lithium and sodium, which is more electropositive ?

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  15. Which is more electropositive between Lithium and Sodium ?

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  16. Name the alkaline earth metal which is ratio active.

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  17. What is the composition of carnallite ?

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  18. What is plaster of paris ?

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  19. Write down the electronic configuration of potassium ?

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  20. What is the composition of Gypsum ?

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