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Q. The instrument that measures and records the relative humidity of air is
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Q. Refrigeration is a process which
Q. The frequency of direct current is _______
Q. Lightning heats the surrounding air to
Q. Which of the following is NOT a method to reduce friction?
Q. Thermonuclear Experimental Reactor (ITER) project is located at?
Q. Red light has a wavelength of 70 A°. In "nm" it is
Q. Refraction of star light through the earth’s atmosphere causes
Q. The class C insulation can withstand
Q. Which one of the following is used to remove astigmatism for a human eye?
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