The elements in Group IVA (carbon family) are:
Among these, only carbon (\( C \)) is a non-metal. The others are either metalloids or metals.
Final Answer: The non-metal in Group IVA is \( \mathbf{C} \), which corresponds to option \( \mathbf{(1)} \).
Given below is the industrial process for the manufacture of ammonia gas. Study the schematic diagram to answer the following questions.
(a) Name the process.
(b) Which catalyst is used in the above process?
(c) In the above diagrammatic setup, how is ammonia gas separated from the unreacted gases to obtain liquid ammonia?
(d) Which two properties of ammonia gas can be demonstrated by the Fountain Experiment? 
Study the reaction scheme shown below and identify the reactants A, B and C. 