Which of the following sulphates is not soluble in water ?

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In diaphragm cell level of brine in anode compartment is kept slightly higher which prevents_______________?

A. Hydroxide ions to reach anode B. Chlorine gas to mix C. Cathode to decay D. All of the above...

Alkali and alkaline earth metals impart colours when heated over burner. It is due to______________?

A. Smaller electronegativity of alkali metals B. Smaller ionic radius of these metals C. De-excitation of electrons from higher energy levels to low energy level D. Excitation of electrons from low energy levels to higher energy levels...

First ionization potential of alkaline earth metal is greater than alkali metals because___________________?

A. They are more reactive B. They have greater atomic radii C. They have smaller atomic sizes D. All...

Which one of the following pairs shown diagonal relationship in the periodic table ?

A. Sodium and Lithium B. Lithium and magnesium C. Lithium and beryllium D. Boron and Beryllium...

Sodium is not observed in +2 oxidation state because of its__________________?

A. high first ionization potential B. high second ioniation potential C. high ionic radius D. high electronegativity...