The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ...? Mcqs

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The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ...?

(A) Ionosphere
(B) Troposphere

(C) Mesosphere
(D) Stratosphere

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DNA is _____________...?

(A) Acetic Acid
(B) A class of nucleic acids

(C) Citric Acid
(D) None of these

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Granite is a____________...?

(A) Metamorphic rock
(B) Igneous rock

(C) Sedimentry rock
(D) None of these

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The α-radiation is _______...?

(A) A stream of fast-moving electrons
(B) A form of electromagnetic radiation

(C) Highly ionizing than γ-radiation
(D) More penetrating than β-radiation

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