If input of a NOT gate is "1" then its output is _____...? Mcqs

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If input of a NOT gate is "1" then its output is _____...?

(A) 1
(B) 0

(C) May be 1 or may be 0
(D) None of these

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The sun appears red at sunrise and sunset while it appears white at noon, because...?

(A) Of refraction
(B) It is cooler at sunrise and at sunset

(C) Of diffraction leading to red end of the spectrum reaching the earth.
(D) Of Scattering of light due to dust particles and air molecules.

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Bimetallic strip is used in _____...?

(A) Electric fan
(B) Electric motor

(C) Electric iron
(D) Electric toaster

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Animals which are at the risk of extinction in future called...?

(A) Vulnerable
(B) Extinct

(C) Threatened
(D) Endangered

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Air Conditioning Controls:___________...?

(A) Circulation of the Air
(B) Humidity

(C) Temperature
(D) All of The Above

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People living in high altitudes (like mountains) usually have a _________...?

(A) smaller number of Red Blood Cells
(B) larger number of Red Blood Cells

(C) smaller number of White Blood Cells
(D) larger number of White Blood Cells

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Detergents dissolved in water help in cleaning clothes by_________...?

(A) Increasing the temperature of water
(B) Reacting chemically with dirt

(C) Reducing the surface tension of water
(D) Dissolving dirt

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How many colors are there in Rainbow ...?

(A) 2
(B) 4

(C) 5
(D) 7

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Remote sensing is the science of obtaining information about objects or areas on earth from space by using ____...?

(A) Satellite
(B) Radar

(C) Telescope
(D) Aircraft

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Which one of the following is not a way to reduce friction...?

(A) Smooth and polishing surfaces
(B) Less contact area

(C) Oil and lubricants
(D) Ball bearing and rollers

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