A Brine solution on electrolysis will not give :
1. NaOH
2.
3.
4.
1. K+ > Na+ > Rb+ > Cs+
2. Cs+ > Rb+ > K+ > Na+
3. Rb+ > K+ > Cs+ > Na+
4. Na+ > K+ > Rb+ > Cs+
An amphoteric hydroxide among the following is :
1.
2.
3.
4.
The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is :
1.
2.
3.
4.
The incorrect statement among the following is -
1. Li+ has minimum degree of hydration among alkali metal cations.
2. The oxidation state of K in KO2 is +1
3. Sodium is used to make Na / Pb alloy.
4. MgSO4 is readily soluble in water.
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.
The correct order of thermal stability of carbonates of Group 2 elements is-
1.
2.
3.
4.
A substance that gives a brick red flame and breaks down on heating giving oxygen and a brown gas is-
1. Calcium carbonate.
2. Magnesium carbonate.
3. Magnesium nitrate.
4. Calcium nitrate.
In the Solvay process of manufacturing sodium carbonate, the raw materials used are :
1. Aqueous NaOH, and
2. Molten NaOH, and CO
3. Brine NaCl, and CO
4. Brine NaCl, and
The chemical formula of Plaster of Paris is:
1.
2.
3.
4. 3CaSO4.H2O