Multiple Choice
Commercially oxygen is usually obtained by
A) decomposition of mercury(II) oxide.
B) decomposition of potassium chlorate.
C) electrolytic decomposition of water.
D) fractional distillation of air.
Correct Answer:

Verified
Correct Answer:
Verified
Q259: Approximately 90% of the Earth's crust is
Q260: Which is classified as an amphoteric binary
Q261: What are the basic oxides of the
Q262: What is the oxidation number of carbon
Q263: What are appropriate methods for the generation
Q265: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4940/.jpg" alt=" -Which of these
Q266: Which of the following species has its
Q267: Shown below are four oxoanions of sulfur.Small
Q268: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4940/.jpg" alt=" -Which of the
Q269: If the anhydride of nitrous acid (HNO<sub>2</sub>)is