Sodium hydroxide can be prepared by:

1. Down's Process.

2. Castner–Kellner process.

3. Solvay's Process.

4. None of the above.

Subtopic:  Chemical Properties | Preparations, Properties & Uses of S Block Elements |
 77%
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The sequence of ionic mobility in an aqueous solution is: 


1.  K> Na> Rb> Cs+

2.  Cs> Rb> K> Na+

3.  Rb> K> Cs> Na+

4.  Na> K> Rb> Cs+

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 74%
From NCERT
AIPMT - 2008
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In the Solvay process of manufacturing sodium carbonate, the raw materials used are :

1. Aqueous NaOH, NH3 and CO2

2. Molten NaOH, NH3 and CO

3. Brine NaCl, NH3 and CO

4. Brine NaCl, NH3 and CO2

Subtopic:  Preparations, Properties & Uses of S Block Elements |
 64%
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(NH4)2Cr2O7 on heating (below 200 degrees celsius) liberates a gas. The same gas will be obtained below 600 degrees celsius by :

1. Heating NH4NO2

2. Heating NH4NO3

3. Heating Mg3N2

4. None of the above

Subtopic:  Preparations, Properties & Uses of S Block Elements |
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The strongest base among the following is-

1. AlOH3                                   

2. MgOH2

3. CaOH2                                 

4. BaOH2

Subtopic:  Preparations, Properties & Uses of S Block Elements | Compounds of Ca and Na -Preparations, Properties & Uses |
 81%
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