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CBSE

Chemistry

NEET Chemistry : The s-Block Elements

31.

Which of the following alkaline earth metal oxides shows a coordination number four?

32.

The prefix word 'alkali' for alkaline metals shows :

33.

When magnesium is heated , the another compound formed with MgO is :

34.

Assertion : The carbonate of lithium decomposes easily on heating to form lithium oxide and CO₂.

Reason : Lithium being very small in size polarises large carbonate ion leading to the formation of more stable Li₂O and CO₂.

If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false

35.

Which of the following is used as a source of oxygen in space capsules , submarines and breathing masks?

36.

Which salt on heating, does not give brown gas on heating ?

37.

Which is maximum hydrated ?

38.

The order of solubility of lithium halides in non-polar solvents follows the order:

39.

Sodium pyrophosphate is represented by which of the following formula?

40.

NaOH / H⁺ reacts with

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