HCl gas was passed through an aqueous solution of CaCl2, MgCl2 and NaCl. Which of the following compound(s) crystallise(s)?

Match the compounds in Column-I with their corresponding uses in Column-II: Column-I: I. Ca(OH)2 II. NaCl III. CaSO4·0.5H2O IV. CaCO3 Column-II: a. Cast of statues b. White wash c. Antacid d. Washing soda preparation

Which alkali metal directly reacts with nitrogen gas and is used to remove traces of N2 from noble gases like argon?

What is the correct decreasing order of solubility of alkaline earth metal sulfates in water?

Which of the following represents the correct decreasing order of solubility of alkaline earth metal sulfates in water?

What is the correct order of decreasing ionization enthalpy among alkali metals?

Identify the correct statements from the following: A) Among alkali metal ions, Li+ has the highest hydration enthalpy. B) The boiling point of alkali metals increases from Li to Cs. C) The density of K is less than that of Na and Rb. D) Li has a strong tendency to form superoxide.

Which of the following is a characteristic property of alkali metals?

How many of the following alkali and alkaline earth metals directly form both oxides and nitrides when burnt in air? Be, Na, Mg, Ba, Sr, Li, K