In the H$_2$O (water) molecule, the oxygen atom forms two single bonds with hydrogen atoms and has two lone pairs of electrons. This leads to a bent or V-shaped molecular geometry, not linear or trigonal planar. Due to the repulsion from lone pairs, the bond angle is reduced from the ideal tetrahedral angle (109$^\circ$ 28') to approximately 104$^\circ$ 31'. This value is experimentally determined and is a characteristic property of the water molecule's shape.
The correct option is (D): \(104° 31’\)
From the given following (A to D) cyclic structures, those which will not react with Tollen's reagent are : 
Compound 'P' undergoes the following sequence of reactions : (i) NH₃ (ii) $\Delta$ $\rightarrow$ Q (i) KOH, Br₂ (ii) CHCl₃, KOH (alc), $\Delta$ $\rightarrow$ NC-CH₃. 'P' is : 
