MCQ Questions

Question No. 1

Give one word for each of the following descriptions.

Answer :

a) The industrial process that is used to produce ammonia

b) The process that is used to extract nitrogen from liquid air

c) The natural cycle that circulates nitrogen compounds through the air, soil and living organisms

Question No. 2

Do These

Answer :

a) In which group will you find the nitrogen family?

b) Name the elements in the nitrogen group.

c) What is the normal valency of these elements?

d) Classify the elements in this group as metals, non-metals or metalloids.

Question No. 3

Do research about the method to determine the percentage of oxygen in air. Explain how this experiment can be used to prepare nitrogen in the laboratory.

Answer :

Question No. 4

List the physical and chemical properties of nitrogen.

Answer :

Question No. 5

Name the uses of nitrogen.

Answer :

Question No. 6

Nitric acid is made from ammonia using the Ostwald Process. There are three stages in the process. Complete and balance the reactions for the three stages: a) Step 1: 4NH₃(g) + … → … + 6H₂O(g) Step 2: … + O₂(g) → … Step 3: … + H₂O(ℓ) → 2HNO₃(aq) + … b) Name the catalyst used during Step 1. c) Which of the reactions in a) are redox reactions? Explain by referring to oxidation states of nitrogen.

Answer :

Question No. 7

Study the following flow diagram and answer the questions that follow: N₂ + H₂ → process A → process B → process C → product D; D + O₂ → NO₂ → HNO₃.

Answer :

a) Name process A.

b) Give the name of product D.

c) Name process B.

d) Which catalyst is used in process B?

e) Write a balanced chemical equation for the catalytic step of process B.

f) Give the formula of the compound added before process C.

g) When nitric acid and product D react, a new compound F forms. Give the formula of F.

h) Name two uses of F.

Chapter

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