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Assertion (A) The carbonate of lithium d...

Assertion (A) The carbonate of lithium decomposes easily on heating to form lithium oxide and `CO_(2)`.
Reason (R) Lithium being very small in size polarises large carbonate ion leading to the formation of more stable `Li_(2)O` and `CO_(2)`.

A

Assertion and reason both are correct statements and reason is correct explanation for assertion.

B

Assertion and reason both are correct statements but reason is not correct explanation for assertion.

C

Assertion is correct statement but reason is wrong statement.

D

Assertion is wrong statement but reason is correct statement

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The correct Answer is:
A
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MODERN PUBLICATION-S-BLOCK ELEMENTS ( ALKALI AND ALKALINE EARTH METALS ) -Revision Exercises (Objective/Very Short answer questions(Fill in the blanks) )
  1. Li reacts directly with nitrogen to from lithium nitride.

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  2. Solvay process is used for the manufacturing of

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  3. Alkali metals readily dissolve in liquid ammonia to give blue coloured...

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  4. The ionisation energy of alkali metals decreases from Li to Cs bacause

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  5. Which of the following compound(s) will impart a golden yellow colour ...

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  6. Plaster of paris is

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  7. Assertion (A): Lithium chloride is predominantly covalent compound. ...

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  8. Assertion (A): Na(2)SO(4) is soluble in water while BaSO(4) is insolub...

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  9. Al(OH)(3) is amphoteric is nature. Al-O and O-H bonds can be borken ...

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  10. Assertion: Barium is not required for normal biological function in hu...

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  11. Assertion: Li resembles with Mg in properties Reason: Li^(+) has alm...

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  12. Assertion (A): Alkali metals impart colour to the flame. Reason (R )...

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  13. Assertion (A): Sulphur is estimates as BaSO(4) and not as MgSO(4). R...

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  14. Statement -1: Of the chloride of alkaline earth metals BeCl(2) is cova...

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  15. Be forms [BeF(4)]^(2-), but Al forms [AiF(6)]^(3-). Reason (R ): Be...

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  16. Assertion : K, Rb and Cs can also form superoxides. Reason : Their ...

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  17. Assertion (A): CuCI is more covalent than NaCI. Reason (R ): Na^(o+)...

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  18. Assertion : Be gives characteristic flame colouration. Reason : Ion...

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  19. Assertion (A) Beryllium carbonate is kept in the atomsphere of carbon ...

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  20. Assertion (A) The carbonate of lithium decomposes easily on heating to...

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