The cooling fins at the back of refrigerator are made of black and rough surface because ____...? Mcqs

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The cooling fins at the back of refrigerator are made of black and rough surface because ____...?

(A) They are good conductors of heat
(B) They are good radiators of heat

(C) They are good insulators of heat
(D) They are not important for heat transfer

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Who discovered the Polio Vaccine...?

(A) Jonas Salk
(B) Jaber Ibn Hayan

(C) Selman Waksman
(D) None of these

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How many states of matters are there...?

(A) 1
(B) 2

(C) 3
(D) 4

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The rod cells of retina are responsible for vision in...?

(A) Bright Light
(B) Dim light

(C) Summary atmosphere
(D) Shiny atmosphere

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Largest Galaxy in the Universe is_________...?

(A) Andromeda Galaxy
(B) Milky-Way

(C) Spiral Galaxy
(D) Horseshoe Galaxy

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International date line passes through which strait...?

(A) Malacca Strait
(B) Adam Strait

(C) Bering Strait
(D) Java Strait

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A man-made object developed to accomplish a certain task in space ____...?

(A) Spacecraft
(B) Space Station

(C) Satellite
(D) Telescope

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Where is the dirtiest skin of our body is located...?

(A) Feet
(B) Hands

(C) Face
(D) None of these

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Which one is a vector quantity...?

(A) Mass
(B) Weight

(C) Time
(D) Temperature

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What is the name of bacteria that causes Lyme Disease....?

(A) Escherichia Coli
(B) Staphylococus aureus

(C) Borrelia burgdorferi
(D) None of these

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