The S-block Elements

Given below are two statements:

Statement I : Both CaCl2.6H2O and MgCl2.8H2O undergo dehydration on heating.

Statement II : BeO is amphoteric whereas the oxides of other elements in the same

group are acidic.

In the light of the above statements, choose the correct answer from the options given below:

Match List – I with List – II:
| List – I | List – II |
| :--- | :--- |
| (a) Be | (i) Treatment of cancer |
| (b) Mg | (ii) Extraction of metals |
| (c) Ca | (iii) Incendiary bombs and signals |
| (d) Ra | (iv) Windows of X-ray tubes |
| | (v) Bearings for motor engines. |

Choose the most appropriate answer from the option given below:

The correct order of conductivity of ions in water is:

An alkaline earth metal ' M' readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very stable to heat and does not have rock-salt structure. M is:

On combustion of Li, Na and K in excess of air, the major oxides formed, respectively, are:

Two elements A and B have similar chemical properties. They don't form solid hydrogencarbonates, but react with nitrogen to form nitrides. A and B, respectively, are:

Given below are two statements:
Statement I: None of the alkaline earth metal hydroxides dissolves in alkali.
Statement II: Solubility of alkaline earth metal hydroxides in water increases down the group.
In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Lithium halides are some what covalent is nature.
Reason R: Lithium possess high polarisation capability.
In the light of the above statements, choose the most appropriate answer from the options given below:

Match List- I with List-II:

Match List – I with List – II:
| List - I (Elements) | List - II (Properties) |
|---|---|
| (a) Li | (i) Poor water solubility of I? salt |
| (b) Na | (ii) Most abundant element in cell fluid |
| (c) K | (iii) Bicarbonate salt used in fire extinguisher |
| (d) Cs | (iv) Carbonate salt decomposes easily on heating |
Choose the correct answer from the options given below: