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: Factor which is not causing ‘prasravana’ of Sukra according to Charaka is:
Ans: Laghuthwam
Ans: Laghuthwam
Q: What absorbs, scatters, or reflects most incoming solar radiation in the atmosphere?
Ans: clouds and dust
Ans: clouds and dust
Q: What was the expected global economic growth rate for 2025, per the IMF in April?
Ans: 2.8%
Ans: 2.8%
Q: Each hydrogen atom follows the octet rule with how many pairs of electrons?
Ans: one
Ans: one
Q: What is the main way that wind causes erosion?
Ans: abrasion
Ans: abrasion
Q: What is the fine for driving with a defective number plate?
Ans: ₹5,000
Ans: ₹5,000
Q: Because arthropod appendages are jointed, they can do what?
Ans: bend
Ans: bend
Q: 'Matatirtha Aunsi Utsav' is celebrated in which country?
Ans: Nepal
Ans: Nepal
Q: On December 18, 2024, the joint naval exercise SLINEX started between India and which country?
Ans: Sri Lanka
Ans: Sri Lanka
Q: Which Indian state is the largest producer of cotton?
Ans: Gujarat
Ans: Gujarat
Q: What is another term for flagella?
Ans: pseudopods
Ans: pseudopods
Q: According to Ashtanga Hridayam, which formulation is used for Pittaja Shotha?
Ans: Chandrakala Rasa
Ans: Chandrakala Rasa
Q: What does a red flashing light at an intersection indicate?
Ans: Stop
Ans: Stop
Q: The interaction between atomic orbitals is greatest when they have the same what?
Ans: fuel
Ans: fuel
Q: Who introduced the Permanent Settlement in Bihar in 1793?
Ans: Lord Cornwallis
Ans: Lord Cornwallis
