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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Fine organic or inorganic particles suspended in air is called _______________...?

(A) particulate pollutant
(B) gaseous pollutant

(C) aerosol
(D) none of these

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How many layers of Atmosphere...?

(A) 2
(B) 3

(C) 4
(D) 5

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The PH of milk is __________...?

(A) 6.0
(B) 6.5

(C) 7.0
(D) 7.5

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Nervous system includes which of these major components...?

(A) Brain
(B) Brain & Back Bone

(C) brain, spinal cord and neurons
(D) None

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The separation between two consecutive compressions of the sound wave is called...?

(A) Time period
(B) Frequency

(C) Amplitude
(D) Wavelength

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The chemical name of chalk is...?

(A) Sodium nitrate
(B) Zinc sulfate

(C) Sulphuric acid
(D) Calcium carbonate

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Scientist discovered a previously undetected feature of the human Anatomy that could be the largest organ of human body...?

(A) Brass
(B) Pectora

(C) Interstitium
(D) Otic

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The matter of our sun is in ________ state...?

(A) Liquid
(B) Gas

(C) Solid
(D) Plasma

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Tendency of atoms to acquire eight electrons in their valence shell is ______...?

(A) Octet rule
(B) Duplet rule

(C) Triplet rule
(D) None of above

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