In the hardening stage of plaster of paris, the compound formed is :
In the extraction of sodium by Down's process, cathode and anode are respectively:
Sodium is heated in air at 3000C to form X. X absorbs CO2 and forms Na2CO3 and Y. Which of the following is Y
What are the metal ions present in carnallite ?
Assertion (A) : K, Rb and Cs form superoxides.<br>Reason (R) ; The stability of the superoxides increase from \'K\' to \'Cs\' due<br>to decrease in lattice energy. <br>The correct answer is <br>
Beryllium shows diagonal relationship with aluminium.Which one of the following similarity is not correct
Which one of the following elements reduces NaOH to Na?
A mixture of sodium oxide and calcium oxide are dissolved in water,and saturated with excess carbon dioxide gas.The resulting solution is.....It contains.......