Name the material of screen which used in Rutherford atomic model...? Mcqs

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Name the material of screen which used in Rutherford atomic model...?

(A) Aluminum foil
(B) Zinc sulphide

(C) Sodium sulphide
(D) Aluminum sulphide

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Which bird has legs but can’t walk ...?

(A) Loons
(B) Grebes

(C) Hummingbirds
(D) None of these

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What inspired reflecting road lights to be invented...?

(A) Car door reflecting mirrors
(B) The light a cat’s eyes gave off on a fence

(C) Sun light on steel posts on road sides
(D) The sun light on the windshield

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Exposure to sunlight helps a person improve his health because ________...?

(A) Resistance power increases
(B) The infrared light kills bacteria in the body

(C) The ultraviolet rays convert skin oil into Vitamin D
(D) The pigment cells in the skin get stimulated and produce a healthy tan

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A colour blind person cannot distinguish between _________...?

(A) White & Yellow
(B) Red & Green

(C) Red & Black
(D) Green & Black

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Which of the following is not a characteristic of a wave...?

(A) An amplitude
(B) Period

(C) Mass
(D) Velocity

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Which gas is transported out of the leaf into the air...?

(A) Carbon Dioxide (CO2)
(B) Nitrogen (N2)

(C) Water Vapor (H2O)
(D) Oxygen (O2)

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Dental mirror is what type of a mirror...?

(A) Convex mirror
(B) Concave mirror

(C) Plane mirror
(D) none of these

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A mixture of sand and naphthalene can be separated by ________ ...?

(A) Chromatography
(B) Fractional distillation

(C) Sublimation
(D) None of these

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In group electron affinity values decreases from top to bottom because ______...?

(A) Atomic size normal
(B) Atomic size increases

(C) Atomic size decreases
(D) Atomic size same

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