Sodium in liquid ammonia is used as :
1. Oxidizing agent .
2. Reducing agent.
3. Hydrolyzing agent.
4. Precipitating agent.
The correct order of thermal stability of carbonates of Group 2 elements is-
1.
2.
3.
4.
is used in oxygen cylinders in space aircraft and submarines because it :
1. Absorbs and increases content.
2. Eliminates moisture.
3. Absorbs
4. Produces
Sodium nitrate decomposes above 800°C and does not give:
1.
2.
3.
4. Na2O
One mole of calcium phosphide upon reacting with water gives:
1. One mole of the phosphene.
2. Two moles of phosphoric acid.
3. Two moles of phosphine.
4. One mole of phosphorus pentaoxide.
Among the following the least thermally stable carbonate is :
2.
3.
4.
A molecule among the following that has the highest hydration energy is -
1. MgCl2
2. CaCl2
3. BaCl2
4. SrCl2
In case of alkali metal halides, the ionic character increases in the order :
1. MF < MCl < MBr < MI
2. MI < MBr < MCl < MF
3. MI < MBr < MF < MCl
4. None of the above.
Lithium shows a diagonal relationship with :
1. Sodium
2. Magnesium
3. Calcium
4. Aluminium
The incorrect statement among the following is-
1. Sodium metal is used in organic qualitative analysis.
2. Sodium carbonate is soluble in water and it is used in inorganic qualitative analysis.
3. Potassium carbonate can be prepared by the solvay process.
4. Aq. solution of potassium bicarbonate is a weak base.