Question

Which of the following is correct with regarding the formation of Nitrogen?

I. Nitrogen is obtained by liquefaction and fractional distillation of air.

II. Nitrogen is obtained by reacting an aqueous solution of Ammonium chloride with Sodium Nitrite.

III. Decomposition of Sodium or Barium Azide at high-temperature results in the formation of pure Nitrogen.

IV Nitrogen is not soluble in water.

1. II and IV only
2. I and IV only 
3. I, II and III only
4. I and III only

Answer 1

Correct Answer - Option 4 : I and III only

The correct option is 4, i.e I and III only.

• Nitrogen is obtained by liquefaction and fractional distillation of air.
• Nitrogen is obtained by reacting an aqueous solution of Ammonium chloride with Sodium Nitrate. Hence, statement II is incorrect.
• Decomposition of Sodium or Barium Azide at high-temperature results in the formation of pure Nitrogen.
• Nitrogen is soluble in water. Hence, statement IV is incorrect
• It is used in the manufacturing of compounds like Ammonia and Calcium Cyanamide.
• Liquid Nitrogen is used as a food preservative and as a refrigerant.