MCQ
Which of the following hydrides are ionic
- A$Ca{H_2}$
- B$Ba{H_2}$
- C$Sr{H_2}$
- ✓All of above
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which of the following alkyne cannot give ketone

${I_2}(g)$ $\rightleftharpoons$ $2I(g),\;\Delta H_r^o(298\,K) = + 150\;kJ$