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1. MATTER IN OUR SURROUNDINGS
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गर्म, शुष्क दिन में कूलर अधिक ठंडा क्यों करता है ?
Option A
Option B
Option C
Option D
Solution
A desert cooler functions on the basis of evaporation. The rate of evaporation increases with increase in temperature and decrease in humidity. As evaporation increases when the day is hot and dry. So, the desert cooler functions to a better extent.
Standard 9
Science