What two elements make up about 99 percent of the air?
- Correct Answer: nitrogen and oxygen
- phosphorus and oxygen
- nitrogen and phosphorus
- helium and boron
Explanation: Nitrogen and oxygen make up about 99 percent of the air. Argon and carbon dioxide make up much of the rest. The air also contains water vapor. The amount of water vapor varies from place to place.
More Random Questions
Q: If today is Monday
Ans: what day is it after 100 days?
Ans: what day is it after 100 days?
Q: What is an example of a predator-prey relationship that helps maintain the balance of organisms in ecosystems?
Ans: lion and zebra
Ans: lion and zebra
Q: What was the Rowlatt Act of 1919?
Ans: Detention without trial
Ans: Detention without trial
Q: On May 1, 2024, who got the prestigious Navratna status from the government?
Ans: IREDA
Ans: IREDA
Q: Which fluid is used in automatic transmissions?
Ans: Automatic transmission fluid
Ans: Automatic transmission fluid
Q: What was the Nasdaq Composite percentage change on April 10, 2025?
Ans: -2.8%
Ans: -2.8%
Q: Which medication is used to treat acute myocardial infarction?
Ans: Aspirin
Ans: Aspirin
Q: What percentage of Republicans blamed Biden for the economy in March 2025?
Ans: 65%
Ans: 65%
Q: What is required for a vehicle’s temporary registration?
Ans: Form 20
Ans: Form 20
Q: Which movement allied with the Non-Cooperation Movement in 1920?
Ans: Khilafat Movement
Ans: Khilafat Movement
Q: Who has won 'Miss Charm India 2024'?
Ans: Shivangi Desai
Ans: Shivangi Desai
Q: As per Ashtanga Hridayam, which Rasa is predominant in Gokshura?
Ans: Madhura
Ans: Madhura
Q: What term describes the process of vesicles fusing with the plasma membrane and releasing their contents to the outside of the cell?
Ans: endocytosis
Ans: endocytosis
Q: Where was the third season of the World Tennis League concluded?
Ans: Abu Dhabi
Ans: Abu Dhabi
Q: How often should the coolant be checked?
Ans: Every 6 months
Ans: Every 6 months
