What force is involved when we rub our hands together to warm them in winter and when we rub a matchstick to ignite it...? Mcqs

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What force is involved when we rub our hands together to warm them in winter and when we rub a matchstick to ignite it...?

(A) Gravity
(B) Friction

(C) Electromagnetism
(D) Inertia

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Turpentine is obtained from___________...?

(A) Oak tree
(B) Pine tree

(C) Birch tree
(D) Lemon tree

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Which of the following layers make radio transmission possible...?

(A) Troposphere
(B) Ionosphere

(C) Mesosphere
(D) Stratosphere

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Water percentage in plasma is _____...?

(A) 80%
(B) 90%

(C) 60%
(D) 70%

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The value of acceleration due to gravity is minimum on which of these planets...?

(A) Mars
(B) Jupiter

(C) Mercury
(D) Neptune

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Layer of atmosphere which separates stratosphere and troposphere is known as...?

(A) Tropo-pause
(B) Mesopause

(C) Stratopause
(D) Thermopause

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Deficiency diseases are caused due to the deficiency of___________...?

(A) Proteins
(B) Vitamins

(C) Carbohydrates
(D) Fats

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A slow-running pendulum clock can be speeded up by_______________...?

(A) Increasing the length of the rod
(B) Increasing the weight of the bob

(C) Reducing the length of the rod
(D) Reducing the weight of the bob

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Antares is of the largest known ___________...?

(A) Quasars Star
(B) Pulsars Star

(C) White Dwarfs Star
(D) Red Super-giants Star

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If an object absorbs all entire component/seven colours of light, it appears in ________ colour....?

(A) White
(B) Black

(C) Dark
(D) Green

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