Earth is divided into following three layers...? Mcqs

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Earth is divided into following three layers...?

(A) a. Crust, Mountains, Oceans
(B) b. Crust, Mantle, Trenches

(C) c. Trenches, Mountains, Core
(D) d. Crust, Mantel, Core

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Long-sight defect could be corrected by using __________ lens...?

(A) concave
(B) Convex

(C) diverging
(D) none of these

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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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When the magnet is suspended freely, its north and south poles are always pointed towards...?

(A) North and South poles of earth respectively
(B) North and South poles of earth in the opposition direction

(C) East and West of earth respectively
(D) East and West of earth in opposite direction

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Which one of the following of glass can cut ultraviolet rays...?

(A) Jena Glass
(B) Soda Glass

(C) Pyrex Glass
(D) Crookes Glass

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Which of the following planets rotate from east to west on its exis...?

(A) Jupiter, Mars
(B) Mercury, Saturn

(C) Venus, Uranus
(D) Neptune, Earth

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Which of the following strongly supports the endosymbiont hypothesis of eukaryotic evolution...?

(A) Mitochondria and chloroplasts both have DNA
(B) Mitochondria is free living

(C) Both A and B
(D) None of the above

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For water purification, we use...?

(A) Chlorine
(B) Bromine

(C) Plants
(D) Young man

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Which layer of the atmosphere reflects radio waves back to the earth’s surface...?

(A) Troposphere
(B) Stratosphere

(C) Ozone layer
(D) Ionosphere

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What is the direction of the magnetic field lines inside a bar magnet...?

(A) From north pole to south pole
(B) South pole to north pole

(C) From side to side
(D) There are no magnetic field lines

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