
Oxygen was discovered by:
(A) Priestley
(B) Scheele
(C) Boyle
(D) Cavendish
Answer
524.7k+ views
1 likes
Hint: Oxygen is the chemical element with the atomic number 8 and has a symbol O. In 1772, it was discovered by heating potassium nitrate, mercuric oxide and many other substances.
Complete step by step solution :
- Oxygen was discovered by Scheele. The process of discovery of oxygen is as follows.
Oxygen was discovered about 1772 by Swedish chemist, Carl William Scheele, who obtained it by heating potassium nitrate, mercuric oxide, and many other substances. An English chemist, Joseph Priestley, independently discovered oxygen in 1774 by the thermal decomposition of mercuric oxide and published the findings in the same year.
- Oxygen is interpreted to play a remarkable role in the process of respiration as well as combustion. Further notifications were made that oxygen has the tendency to form acids by combining with many different substances and accordingly names the element as oxygen, which in Greek means ‘acid former’.
Therefore, the correct answer is Option B.
Additional Information: At 46 percent of the mass, oxygen is the most plentiful element in Earth’s crust. The proportion of oxygen by volume in the atmosphere is 21 percent and by weight in seawater is 89 percent.
During respiration, animals and some bacteria take oxygen from the atmosphere and return to it carbon dioxide, whereas by photosynthesis, green plants assimilate carbon dioxide in the presence of sunlight and evolve free oxygen.
Note: Oxygen has two allotropic forms, diatomic and triatomic. The properties of diatomic form suggest that six electron bonds the atoms and two electrons remain unpaired, accounting for the paramagnetism of oxygen.
Complete step by step solution :
- Oxygen was discovered by Scheele. The process of discovery of oxygen is as follows.
Oxygen was discovered about 1772 by Swedish chemist, Carl William Scheele, who obtained it by heating potassium nitrate, mercuric oxide, and many other substances. An English chemist, Joseph Priestley, independently discovered oxygen in 1774 by the thermal decomposition of mercuric oxide and published the findings in the same year.
- Oxygen is interpreted to play a remarkable role in the process of respiration as well as combustion. Further notifications were made that oxygen has the tendency to form acids by combining with many different substances and accordingly names the element as oxygen, which in Greek means ‘acid former’.
Therefore, the correct answer is Option B.
Additional Information: At 46 percent of the mass, oxygen is the most plentiful element in Earth’s crust. The proportion of oxygen by volume in the atmosphere is 21 percent and by weight in seawater is 89 percent.
During respiration, animals and some bacteria take oxygen from the atmosphere and return to it carbon dioxide, whereas by photosynthesis, green plants assimilate carbon dioxide in the presence of sunlight and evolve free oxygen.
Note: Oxygen has two allotropic forms, diatomic and triatomic. The properties of diatomic form suggest that six electron bonds the atoms and two electrons remain unpaired, accounting for the paramagnetism of oxygen.
Recently Updated Pages
Master Class 12 Economics: Engaging Questions & Answers for Success

Master Class 12 Maths: Engaging Questions & Answers for Success

Master Class 12 Biology: Engaging Questions & Answers for Success

Master Class 12 Physics: Engaging Questions & Answers for Success

Master Class 12 Business Studies: Engaging Questions & Answers for Success

Master Class 12 English: Engaging Questions & Answers for Success

Trending doubts
Which are the Top 10 Largest Countries of the World?

a Tabulate the differences in the characteristics of class 12 chemistry CBSE

Why is the cell called the structural and functional class 12 biology CBSE

Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE

Derive an expression for electric potential at point class 12 physics CBSE

What is the Full Form of PVC, PET, HDPE, LDPE, PP and PS ?
