MCQ
Which polymer have $C-O-C$ linkage
- ABakelite
- BMelamine formaldehyde resin
- CStarch
- ✓$B$ and $C$
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$(A)$ It has two geometrical isomers
$(B)$ It will have three geometrical isomers if bidentate 'en' is replaced by two cyanide ligands
$(C)$ It is paramagnetic
$(D)$ It absorbs light at longer wavelength as compared to $\left[ Co ( en )\left( NH _3\right)_4\right]^{3+}$