RRB Junior Engineer / DMS / CMA 2019 · Question 160 of 3719
Chemistry - Metals
• Nitrogen (Atomic number -7, Group 15 of the periodic table): • Elemental nitrogen is a colourless, odourless, tasteless and mostly inert diatomic gas at standard conditions. • Nitrogen constitutes 78% by volume of Earth's atmosphere. • Nitrogen occurs in all living organisms. • The non-metals include carbon (C), nitrogen (N), oxygen (O), phosphorus (P), sulfur (S), selenium (Se).
Source: RRB JE 2019 CBT-1 (24-May-2019 Shift-1) — ixambee compilation with answer key and solutions · reliable-secondary
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