A. copper and nickel
B. copper and chromium
C. nickel and chromium
D. iron and graphite
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.......
Which of the following alkali metals has the greatest tendency for the half reaction; M(g) →M<sup>+</sup>(aq) + e