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–C º N $?\underset{\begin{array}{l}\left|\text{?}\right|\\ O\end{array}}{C}$ , – CH₃ are –R group which is deactivating

– $\ddot{N}H$ – $\stackrel{\begin{array}{l}O\\ \left|\text{?}\right|\end{array}}{C}$ – CH₃ and – $\ddot{N}H$ – CH₃ due to presence of lone pair in nitrogen atom behaves as activating (+R) group.

Classical smog contains SO₂

E_cell = 0 – log2

= – 0.03 (0.3)

 = – 0.009

 = – 9 * 10^–3 V

x = 9

The top 5 hotel management colleges in India are IHM Pusa, IHM Mumbai, IHM Hyderabad, IHM Chennai, and IHM Lucknow. These ranking is based on the India Today Rank 2025.  

According to the India Today Rank of 2025, the Institute of Hotel Management Catering & Nutrition (IHM) Pusa is the best government hotel management college in India. 

Histidine is an essential amino acid.