How often should a vehicle’s air filter be cleaned?

Explanation: The air filter should be cleaned every 5,000–10,000 km for engine efficiency.

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Q: What causes the wheels of the car to turn?
Ans: turning driveshaft

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Ans: Increase

Q: What instrument is used to make objects in space appear closer?
Ans: telescope

Q: Which treaty ended the Mexican-American War?
Ans: Treaty of Guadalupe Hidalgo

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Ans: 66.67 gtt/min

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Ans: Lower inflation

Q: In diffusion, substances tend to move from an area of high concentration to an area of what kind of concentration?
Ans: low

Q: When is 'UNICEF Foundation Day' celebrated?
Ans: 11 December

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Ans: DPT

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Ans: metalloids