MCQ
Aniline reacts with acetaldehyde to form
- ✓Schiff's base
- BCarbylamine
- CImmine
- DNone of these
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The product $'P'$ gives positive ceric ammonium nitrate test. This is because of the presence of which of these $-OH$ group(s)$?$
Assertion $(A) :$ Metallic character decreases and non-metallic character increases on moving from left to right in a period.
Reason $(R)$ $:$ It is due to increase in ionisation enthalpy and decrease in electron gain enthalpy, when one moves from left to right in a period.
In the light of the above statements, choose the most appropriate answer from the options given below :

$C(s) + O_2(g) \to CO_2(g) + x\ kJ$
$CO(g) + \frac {1}{2}O_2(g) \to CO_2(g) + y\,kJ$
The heat of formation of $CO(g)$ is