How often should air filters be replaced in a vehicle?

Explanation: Air filters should be replaced every 15,000–30,000 km to ensure engine efficiency.

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Q: According to Charaka, which is a Hetu of Kasa?
Ans: Ati Ruksha Ahara

Q: Which freedom fighter and revolutionary's birth anniversary was celebrated on 28 May 2024?
Ans: Veer Savarkar

Q: According to the report released on 28 December 2024, India has achieved a reduction of how much percentage in malaria cases?
Ans: 97%

Q: What science studies chemical processes that are found in living things?
Ans: biochemistry

Q: Instead of insects, crustaceans are the dominant arthropods in what environment?
Ans: marine habitat

Q: Which country has issued a postage stamp on Lord Ram of Ayodhya on 30 July 2024?
Ans: Laos

Q: Oxygen and glucose are both reactants in the process of
Ans: cellular respiration

Q: What is caused by the buildup of stress in the rocks?
Ans: ground tilting

Q: What process done by bacteria makes them important producers in aquatic ecosystems?
Ans: reproduction

Q: The white of an egg becomes opaque when cooked because what are insoluble and solidify?
Ans: denatured proteins

Q: To which country did India make the first payment for the "Hybrid Power Project" on August 30, 2024?
Ans: Sri Lanka

Q: What is another name for the vertebral column?
Ans: brain stem

Q: On which planet has a huge volcano named 'Noctis' been discovered?
Ans: Mars

Q: Which country's army will launch a campaign to collect garbage from Mount Everest?
Ans: Nepal

Q: On December 14, Indian Postal, Telecommunication Accounts and Finance Service' celebrated which foundation day?
Ans: 50th