A compound that has higher hydration enthalpy than the lattice enthalpy is:
1.
2.
3.
4.
An active ingredient in bleaching powder that aids in the bleaching action is:
1.
2.
3.
4.
Solubility of alkaline earth metal sulphates in water decreases in the sequence:
1. Mg > Ca > Sr >Ba
2. Ca > Sr > Ba > Mg
3. Sr > Ca > Mg > Ba
4. Ba > Mg > Sr > Ca
A compound that releases CO2 most easily upon heating is?
1.
2.
3.
4.
The most acidic oxide among the following is -
1. MgO
2. BeO
3. BaO
4. CaO
The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -
1. Potassium is solid and sodium distils off at 850 °C.
2. Potassium is more volatile and distils off thus shifting the reaction forward.
3. Sodium is more reactive than potassium at 850 °C.
4. Sodium has less affinity to chloride ions in the presence of potassium ions.
A paramagnetic compound among the following is -
1.
2.
3.
4.
The pair of compounds, that cannot exist together in a solution is -
1.
2.
3.
4.