A) Chain
B) Optical
C) Mesmerism
D) Tautomerism
Correct Answer: D
Solution :
Ethyl acetoacetate shows tautomerism. \[{{\cos }^{-1}}\frac{x}{2}+{{\cos }^{-1}}\frac{y}{3}=\theta ,\] \[9{{x}^{2}}-12xy\cos 6+4{{y}^{2}}\]
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