For the reaction in equilibrium 
\(\mathrm{N_2(g) +3H_2(g) \rightleftharpoons 2NH_3(g), \Delta H=-Q}\)
Reaction is favoured in forward direction by:

1. use of catalyst 
2. decreasing concentration of \(\mathrm{N_2}\)
3. low pressure, high temperature and high concentration of ammonia
4. high pressure, low temperature and higher concentration of \(\mathrm{H_2}\)
Subtopic:  Le Chatelier's principle |
From NCERT
NEET - 2024
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