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: What is the rule for carrying a warning triangle in vehicles?
Ans: Mandatory for all vehicles
Ans: Mandatory for all vehicles
Q: What was the consumer confidence trend in January 2025, per Gallup?
Ans: Improved
Ans: Improved
Q: How fast analysis of semen should be done after collection?
Ans: Within one hour
Ans: Within one hour
Q: What is the function of the differential in a vehicle?
Ans: Distributes power to wheels
Ans: Distributes power to wheels
Q: What is the purpose of the fuel tank in a vehicle?
Ans: Stores fuel
Ans: Stores fuel
Q: According to Bhaishajya Ratnavali, the Anupana for Avipattikara Churna in Pittaja Amlapita is:
Ans: Cold water
Ans: Cold water
Q: Which modern drug is an example of an antiepileptic?
Ans: Phenytoin
Ans: Phenytoin
Q: What percentage of Americans approved of Trump’s handling of inflation in March 2025?
Ans: 32%
Ans: 32%
Q: Who has won 'Miss Charm India 2024'?
Ans: Shivangi Desai
Ans: Shivangi Desai
Q: A new species of snake eel has been discovered by ZSI scientists in Jangam district of which state on June 21, 2024?
Ans: Odisha
Ans: Odisha
Q: In a code where ‘BPSC’ is ‘AORB’
Ans: how is ‘EXAM’ written?
Ans: how is ‘EXAM’ written?
Q: What does a solid yellow double line on the road mean?
Ans: No overtaking
Ans: No overtaking
Q: Who has topped the 'ICC T20 All-Round Ranking'?
Ans: Hardik Pandya
Ans: Hardik Pandya
Q: Which Indian state is known as the "Land of Hills"?
Ans: Himachal Pradesh
Ans: Himachal Pradesh
