Oxygen Gas-Multiple Choice Questions Quiz

Interactive MCQs on “Oxygen Gas”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What is the chemical symbol for oxygen?

(a) O2
(b) OG
(c) O
(d) Ox

Question 2: In which state of matter is oxygen gas most commonly found at room temperature and normal atmospheric pressure?

(a) Solid
(b) Liquid
(c) Gas
(d) Plasma

Question 3: Oxygen gas makes up approximately what percentage of Earth's atmosphere?

(a) 21%
(b) 50%
(c) 78%
(d) 5%

Question 4: Which process involves the exchange of oxygen and carbon dioxide between the lungs and the blood?

(a) Respiration
(b) Photosynthesis
(c) Digestion
(d) Circulation

Question 5: Which compound is formed when oxygen reacts with most elements?

(a) Oxygen dioxide (O2)
(b) Oxygen monoxide (O)
(c) Oxygen trioxide (O3)
(d) Oxide (XO)

Question 6: Which molecule is often used to represent a molecule of oxygen gas?

(a) O
(b) O2
(c) O3
(d) O4

Question 7: Which process involves plants producing oxygen by utilizing sunlight, carbon dioxide, and water?

(a) Combustion
(b) Oxidation
(c) Respiration
(d) Photosynthesis

Question 8: Oxygen gas was first discovered and recognized as an element by which scientist?

(a) Isaac Newton
(b) Marie Curie
(c) Antoine Lavoisier
(d) Galileo Galilei

Question 9: In which layer of Earth's atmosphere is the ozone layer primarily located?

(a) Troposphere
(b) Stratosphere
(c) Mesosphere
(d) Thermosphere

Question 10: What is the primary role of oxygen gas in the process of cellular respiration?

(a) Production of energy
(b) Removal of waste products
(c) Absorption of light
(d) Synthesis of glucose